diff --git a/app/ARDrawingBoard.jks b/app/ARDrawingBoard.jks
new file mode 100644
index 0000000..ab3881a
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diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 97ae6af..a733ef1 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -1,7 +1,10 @@
+import java.text.SimpleDateFormat
+import java.util.Date
+
 plugins {
     alias(libs.plugins.android.application)
 }
-
+val timestamp: String = SimpleDateFormat("MM_dd_HH_mm").format(Date())
 android {
     namespace = "com.ar.ardrawingboard"
     compileSdk = 35
@@ -11,14 +14,18 @@ android {
         minSdk = 23
         targetSdk = 35
         versionCode = 1
-        versionName = "1.0"
-
+        versionName = "1.0.0"
+        setProperty("archivesBaseName", "AR Drawing Board_V" + versionName + "(${versionCode})_$timestamp")
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    buildFeatures {
+        viewBinding = true
+    }
+
     buildTypes {
         release {
-            isMinifyEnabled = false
+            isMinifyEnabled = true
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
@@ -40,4 +47,16 @@ dependencies {
     testImplementation(libs.junit)
     androidTestImplementation(libs.ext.junit)
     androidTestImplementation(libs.espresso.core)
+
+    implementation("com.github.bumptech.glide:glide:4.16.0")
+    annotationProcessor("com.github.bumptech.glide:compiler:4.16.0")
+
+    implementation ("androidx.room:room-runtime:2.7.0")
+    annotationProcessor ("androidx.room:room-compiler:2.7.0")
+
+    implementation ("androidx.camera:camera-core:1.4.2")
+    implementation ("androidx.camera:camera-lifecycle:1.4.2")
+    implementation ("androidx.camera:camera-view:1.4.2")
+    implementation ("androidx.camera:camera-extensions:1.4.2")
+    implementation ("androidx.camera:camera-camera2:1.4.2")
 }
\ No newline at end of file
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 481bb43..f067c54 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -18,4 +18,17 @@
 
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
-#-renamesourcefileattribute SourceFile
\ No newline at end of file
+#-renamesourcefileattribute SourceFile
+
+-keepclassmembers class com.ar.ardrawingboard.MyApplication {
+    public static final java.lang.String DB_NAME;
+    public static final int DB_VERSION;
+}
+
+-keepclassmembers class * {
+    @androidx.room.Query <methods>;
+}
+
+-keep class com.ar.ardrawingboard.room.AppDatabase { *; }
+-keep  class com.ar.ardrawingboard.room.BoardEntry { *; }
+-keep  class com.ar.ardrawingboard.room.BoardEntryDao { *; }
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index f4096cc..ac5db1a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,7 +2,22 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.FLASHLIGHT" />
+
+    <uses-feature android:name="android.hardware.camera" />
+
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
+    <uses-permission
+        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="32"
+        tools:ignore="ScopedStorage" />
+    <uses-permission
+        android:name="android.permission.READ_EXTERNAL_STORAGE"
+        android:maxSdkVersion="32" />
+
     <application
+        android:name=".MyApplication"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
@@ -13,7 +28,16 @@
         android:theme="@style/Theme.ARDrawingBoard"
         tools:targetApi="31">
         <activity
-            android:name=".MainActivity"
+            android:name=".ui.activity.MainActivity"
+            android:exported="false" />
+        <activity
+            android:name=".ui.activity.CategoryActivity"
+            android:exported="false" />
+        <activity
+            android:name=".ui.activity.BoardActivity"
+            android:exported="false" />
+        <activity
+            android:name=".ui.activity.SplashActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
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diff --git a/app/src/main/assets/png_Vehicles/8.jpg b/app/src/main/assets/png_Vehicles/8.jpg
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diff --git a/app/src/main/assets/png_Vehicles/9.jpg b/app/src/main/assets/png_Vehicles/9.jpg
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diff --git a/app/src/main/java/com/ar/ardrawingboard/MainActivity.java b/app/src/main/java/com/ar/ardrawingboard/MainActivity.java
deleted file mode 100644
index 04ee8a6..0000000
--- a/app/src/main/java/com/ar/ardrawingboard/MainActivity.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.ar.ardrawingboard;
-
-import android.os.Bundle;
-
-import androidx.activity.EdgeToEdge;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.core.graphics.Insets;
-import androidx.core.view.ViewCompat;
-import androidx.core.view.WindowInsetsCompat;
-
-public class MainActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        EdgeToEdge.enable(this);
-        setContentView(R.layout.activity_main);
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
-            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
-            return insets;
-        });
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/MyApplication.java b/app/src/main/java/com/ar/ardrawingboard/MyApplication.java
new file mode 100644
index 0000000..205cc13
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/MyApplication.java
@@ -0,0 +1,74 @@
+package com.ar.ardrawingboard;
+
+import android.app.Application;
+import android.content.Context;
+import android.content.SharedPreferences;
+
+import com.ar.ardrawingboard.util.RoomInit;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executors;
+
+
+public class MyApplication extends Application {
+
+    public static MyApplication application;
+
+    public static final int DB_VERSION = 1;
+    public static final String DB_NAME = "room";
+
+    private static final String PREF_NAME = "app_preferences";
+    private static final String KEY_INIT = "isInit";
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+        application = this;
+
+        SharedPreferences preferences = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
+        boolean isInit = preferences.getBoolean(KEY_INIT, false);
+
+        if (!isInit) {
+            initRoom();
+            preferences.edit().putBoolean(KEY_INIT, true).apply();
+        }
+
+    }
+
+    public static Context getContext() {
+        return application.getApplicationContext();
+    }
+
+    private void initRoom() {
+        Executors.newSingleThreadExecutor().execute(() -> {
+            List<String> imagePaths = getAllImagePathsFromAssets();
+            RoomInit roomInit = new RoomInit(application);
+            roomInit.insertAllImages(imagePaths);
+        });
+    }
+
+    private List<String> getAllImagePathsFromAssets() {
+        List<String> imagePaths = new ArrayList<>();
+        try {
+            String[] categories = application.getAssets().list("");
+            if (categories != null) {
+                for (String category : categories) {
+                    if (category.startsWith("png_")) {
+                        String[] files = application.getAssets().list(category);
+                        if (files != null) {
+                            for (String file : files) {
+                                imagePaths.add(category + "/" + file);
+                            }
+                        }
+                    }
+                }
+            }
+        } catch (IOException ignored) {
+        }
+        return imagePaths;
+    }
+
+}
diff --git a/app/src/main/java/com/ar/ardrawingboard/room/AppDatabase.java b/app/src/main/java/com/ar/ardrawingboard/room/AppDatabase.java
new file mode 100644
index 0000000..a3ef9a3
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/room/AppDatabase.java
@@ -0,0 +1,30 @@
+package com.ar.ardrawingboard.room;
+
+import android.content.Context;
+
+import androidx.room.Database;
+import androidx.room.Room;
+import androidx.room.RoomDatabase;
+
+import com.ar.ardrawingboard.MyApplication;
+
+@Database(entities = {BoardEntry.class}, version = MyApplication.DB_VERSION, exportSchema = false)
+public abstract class AppDatabase extends RoomDatabase {
+
+    public abstract BoardEntryDao boardEntryDao();
+
+    private static volatile AppDatabase INSTANCE;
+
+    public static AppDatabase getInstance(Context context) {
+        if (INSTANCE == null) {
+            synchronized (AppDatabase.class) {
+                if (INSTANCE == null) {
+                    INSTANCE = Room.databaseBuilder(context.getApplicationContext(),
+                                    AppDatabase.class, MyApplication.DB_NAME)
+                            .build();
+                }
+            }
+        }
+        return INSTANCE;
+    }
+}
diff --git a/app/src/main/java/com/ar/ardrawingboard/room/BoardEntry.java b/app/src/main/java/com/ar/ardrawingboard/room/BoardEntry.java
new file mode 100644
index 0000000..2970f26
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/room/BoardEntry.java
@@ -0,0 +1,57 @@
+package com.ar.ardrawingboard.room;
+
+import androidx.room.Entity;
+import androidx.room.PrimaryKey;
+
+import java.io.Serializable;
+
+@Entity(tableName = "board_entry")
+public class BoardEntry implements Serializable {
+
+    @PrimaryKey(autoGenerate = true)
+    private int id;
+
+    private String path;
+
+    private boolean type;
+
+    private boolean isFavorite;
+
+    public BoardEntry(boolean isFavorite, Boolean type, String path) {
+        this.isFavorite = isFavorite;
+        this.type = type;
+        this.path = path;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getPath() {
+        return path;
+    }
+
+    public void setPath(String path) {
+        this.path = path;
+    }
+
+    public boolean isType() {
+        return type;
+    }
+
+    public void setType(boolean type) {
+        this.type = type;
+    }
+
+    public boolean isFavorite() {
+        return isFavorite;
+    }
+
+    public void setFavorite(boolean favorite) {
+        isFavorite = favorite;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/room/BoardEntryDao.java b/app/src/main/java/com/ar/ardrawingboard/room/BoardEntryDao.java
new file mode 100644
index 0000000..6640eee
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/room/BoardEntryDao.java
@@ -0,0 +1,36 @@
+package com.ar.ardrawingboard.room;
+
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.Query;
+import androidx.room.Update;
+
+import java.util.List;
+
+@Dao
+public interface BoardEntryDao {
+    @Insert
+    void insertAll(List<BoardEntry> boardEntry);
+
+    @Insert
+    void insert(BoardEntry boardEntry);
+
+    @Update
+    void update(BoardEntry boardEntry);
+
+    @Query("SELECT * FROM board_entry WHERE path LIKE :path || '/%' AND type = 0")
+    LiveData<List<BoardEntry>> getImageByPath(String path);
+
+    @Query("SELECT * FROM board_entry WHERE path LIKE :path || '/%' AND type = 0 LIMIT 1")
+    LiveData<List<BoardEntry>> getImageByPathLimitOne(String path);
+
+    @Query("SELECT * FROM board_entry WHERE type = 1 ")
+    LiveData<List<BoardEntry>> getImportLive();
+
+    @Query("SELECT * FROM board_entry WHERE type = 1 ")
+    List<BoardEntry> getImport();
+
+    @Query("SELECT * FROM board_entry WHERE isFavorite = 1 ")
+    LiveData<List<BoardEntry>> getFavorite();
+}
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/activity/BoardActivity.java b/app/src/main/java/com/ar/ardrawingboard/ui/activity/BoardActivity.java
new file mode 100644
index 0000000..c3c74ce
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/activity/BoardActivity.java
@@ -0,0 +1,220 @@
+package com.ar.ardrawingboard.ui.activity;
+
+import android.content.ContentValues;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Environment;
+import android.provider.MediaStore;
+import android.widget.ImageView;
+import android.widget.SeekBar;
+import android.widget.Toast;
+
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.activity.result.contract.ActivityResultContracts;
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.camera.core.Camera;
+import androidx.camera.core.CameraSelector;
+import androidx.camera.core.ImageCapture;
+import androidx.camera.core.ImageCaptureException;
+import androidx.camera.core.Preview;
+import androidx.camera.lifecycle.ProcessCameraProvider;
+import androidx.core.content.ContextCompat;
+
+import com.ar.ardrawingboard.R;
+import com.ar.ardrawingboard.databinding.ActivityBoardBinding;
+import com.ar.ardrawingboard.util.CommonUtils;
+import com.ar.ardrawingboard.util.ImageUtils;
+import com.ar.ardrawingboard.util.PermissionUtils;
+import com.ar.ardrawingboard.util.TouchUtils;
+import com.google.common.util.concurrent.ListenableFuture;
+
+public class BoardActivity extends AppCompatActivity {
+    private ActivityBoardBinding uiBinding;
+    private ImageView displayImageView;
+    private Bitmap loadedBitmap;
+    private Camera activeCamera;
+    private ImageCapture photoCapture;
+    private boolean flashEnabled = false;
+    private boolean mirrorEnabled = false;
+
+    private static final int CAMERA_PERMISSION_CODE = 100;
+    private static final int STORAGE_PERMISSION_CODE = 101;
+
+    private final ActivityResultLauncher<Intent> imagePickerLauncher = registerForActivityResult(
+            new ActivityResultContracts.StartActivityForResult(),
+            result -> {
+                if (result.getResultCode() == RESULT_OK && result.getData() != null) {
+                    Uri imageUri = result.getData().getData();
+                    if (imageUri != null) {
+                        displayImageView.setImageURI(imageUri);
+                    }
+                }
+            });
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        initializeUi();
+        configureImageView();
+        setupEventHandlers();
+        handleIntentImage();
+        initializeCameraIfPermitted();
+    }
+
+    private void initializeUi() {
+        uiBinding = ActivityBoardBinding.inflate(getLayoutInflater());
+        setContentView(uiBinding.getRoot());
+        displayImageView = uiBinding.imageFull;
+    }
+
+    private void configureImageView() {
+        displayImageView.setOnTouchListener((view, event) -> TouchUtils.handleTouchEvent((ImageView) view, event));
+    }
+
+    private void setupEventHandlers() {
+        uiBinding.seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                displayImageView.setAlpha((100 - progress) / 100f);
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+            }
+        });
+
+        uiBinding.importImage.setOnClickListener(v -> launchImagePicker());
+        uiBinding.light.setOnClickListener(v -> switchFlash());
+        uiBinding.back.setOnClickListener(v -> finish());
+        uiBinding.reversal.setOnClickListener(v -> applyMirrorEffect());
+        uiBinding.play.setOnClickListener(v -> capturePhoto());
+    }
+
+    private void handleIntentImage() {
+        String imagePath = getIntent().getStringExtra("imagePath");
+        if (imagePath != null) {
+            loadAndDisplayImage(imagePath);
+        }
+    }
+
+    private void initializeCameraIfPermitted() {
+        String[] requiredPermissions = PermissionUtils.getCameraAndStoragePermissions();
+        if (PermissionUtils.hasPermissions(this, requiredPermissions)) {
+            launchCamera();
+        } else {
+            PermissionUtils.requestPermissions(this, requiredPermissions, CAMERA_PERMISSION_CODE);
+        }
+    }
+
+    private void launchCamera() {
+        ListenableFuture<ProcessCameraProvider> providerFuture = ProcessCameraProvider.getInstance(this);
+        providerFuture.addListener(() -> {
+            try {
+                ProcessCameraProvider provider = providerFuture.get();
+                setupCameraUseCases(provider);
+            } catch (Exception e) {
+                Toast.makeText(this, "Camera initialization failed", Toast.LENGTH_SHORT).show();
+            }
+        }, ContextCompat.getMainExecutor(this));
+    }
+
+    private void setupCameraUseCases(ProcessCameraProvider provider) {
+        Preview preview = new Preview.Builder().build();
+        CameraSelector cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA;
+        photoCapture = new ImageCapture.Builder().build();
+
+        preview.setSurfaceProvider(uiBinding.preview.getSurfaceProvider());
+        provider.unbindAll();
+        activeCamera = provider.bindToLifecycle(this, cameraSelector, preview, photoCapture);
+
+        if (loadedBitmap != null) {
+            TouchUtils.initPosition(displayImageView, loadedBitmap, CommonUtils.getScreenSize(this));
+        }
+    }
+
+    private void capturePhoto() {
+        if (photoCapture == null) {
+            Toast.makeText(this, "Camera not ready", Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        ContentValues contentValues = new ContentValues();
+        contentValues.put(MediaStore.MediaColumns.DISPLAY_NAME, "photo_" + System.currentTimeMillis() + ".jpg");
+        contentValues.put(MediaStore.MediaColumns.MIME_TYPE, "image/jpeg");
+        contentValues.put(MediaStore.Images.Media.RELATIVE_PATH, Environment.DIRECTORY_PICTURES);
+
+        ImageCapture.OutputFileOptions options = new ImageCapture.OutputFileOptions.Builder(
+                getContentResolver(), MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues).build();
+
+        photoCapture.takePicture(options, ContextCompat.getMainExecutor(this), new ImageCapture.OnImageSavedCallback() {
+            @Override
+            public void onImageSaved(@NonNull ImageCapture.OutputFileResults results) {
+                Toast.makeText(BoardActivity.this, "Photo captured successfully", Toast.LENGTH_SHORT).show();
+            }
+
+            @Override
+            public void onError(@NonNull ImageCaptureException error) {
+                Toast.makeText(BoardActivity.this, "Capture failed: " + error.getMessage(), Toast.LENGTH_SHORT).show();
+            }
+        });
+    }
+
+    private void switchFlash() {
+        if (activeCamera != null) {
+            flashEnabled = !flashEnabled;
+            activeCamera.getCameraControl().enableTorch(flashEnabled);
+            uiBinding.light.setImageResource(flashEnabled ? R.drawable.flash : R.drawable.un_flash);
+        }
+    }
+
+    private void applyMirrorEffect() {
+        mirrorEnabled = !mirrorEnabled;
+        displayImageView.setScaleX(mirrorEnabled ? -1f : 1f);
+        uiBinding.reversal.setImageResource(mirrorEnabled ? R.drawable.reversal : R.drawable.un_reversal);
+    }
+
+    private void launchImagePicker() {
+        String[] permissions = PermissionUtils.getCameraAndStoragePermissions();
+        if (PermissionUtils.hasPermissions(this, permissions)) {
+            Intent pickIntent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
+            imagePickerLauncher.launch(pickIntent);
+        } else {
+            PermissionUtils.requestPermissions(this, permissions, STORAGE_PERMISSION_CODE);
+        }
+    }
+
+    private void loadAndDisplayImage(String path) {
+        if (path.startsWith("/data/user/")) {
+            loadedBitmap = ImageUtils.loadBitmapFromStorage(path);
+        } else {
+            loadedBitmap = ImageUtils.loadBitmapFromAssets(this, path);
+        }
+
+        if (loadedBitmap != null) {
+            ImageUtils.displayImageToImageView(displayImageView, loadedBitmap);
+        } else {
+            Toast.makeText(this, "Image loading failed", Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        if (PermissionUtils.handlePermissionsResult(grantResults)) {
+            if (requestCode == CAMERA_PERMISSION_CODE) {
+                launchCamera();
+            } else if (requestCode == STORAGE_PERMISSION_CODE) {
+                launchImagePicker();
+            }
+        } else {
+            Toast.makeText(this, "Permissions not granted", Toast.LENGTH_SHORT).show();
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/activity/CategoryActivity.java b/app/src/main/java/com/ar/ardrawingboard/ui/activity/CategoryActivity.java
new file mode 100644
index 0000000..5b7327b
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/activity/CategoryActivity.java
@@ -0,0 +1,71 @@
+package com.ar.ardrawingboard.ui.activity;
+
+import android.content.Intent;
+import android.os.Bundle;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.GridLayoutManager;
+
+import com.ar.ardrawingboard.ui.adapter.FavoriteAndCategoryAdapter;
+import com.ar.ardrawingboard.databinding.ActivityCategoryBinding;
+import com.ar.ardrawingboard.room.AppDatabase;
+import com.ar.ardrawingboard.util.ItemDecoration;
+
+import java.util.ArrayList;
+
+public class CategoryActivity extends AppCompatActivity {
+    private ActivityCategoryBinding mBinding;
+    private String mCategoryKey;
+    private String mCategoryTitle;
+    private FavoriteAndCategoryAdapter mAdapter;
+
+    @Override
+    protected void onCreate(Bundle savedState) {
+        super.onCreate(savedState);
+
+        mBinding = ActivityCategoryBinding.inflate(getLayoutInflater());
+        setContentView(mBinding.getRoot());
+
+        extractIntentData();
+        setupUI();
+        configureRecyclerView();
+        fetchAndDisplayImages();
+    }
+
+    private void extractIntentData() {
+        Intent dataIntent = getIntent();
+        mCategoryKey = dataIntent.getStringExtra("Original");
+        mCategoryTitle = dataIntent.getStringExtra("Title");
+    }
+
+    private void setupUI() {
+        mBinding.title.setText(mCategoryTitle);
+
+        mBinding.back.setOnClickListener(view -> {
+           finish();
+        });
+    }
+
+    private void configureRecyclerView() {
+        GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
+        mBinding.recyclerview.setLayoutManager(layoutManager);
+
+        mAdapter = new FavoriteAndCategoryAdapter(this, new ArrayList<>());
+        mBinding.recyclerview.setAdapter(mAdapter);
+
+        ItemDecoration spacingDecoration = new ItemDecoration(16, 19, 10);
+        mBinding.recyclerview.addItemDecoration(spacingDecoration);
+    }
+
+    private void fetchAndDisplayImages() {
+        AppDatabase database = AppDatabase.getInstance(this);
+
+        database.boardEntryDao()
+                .getImageByPath(mCategoryKey)
+                .observe(this, entries -> {
+                    if (entries != null) {
+                        mAdapter.refreshFavorites(entries);
+                    }
+                });
+    }
+}
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/activity/MainActivity.java b/app/src/main/java/com/ar/ardrawingboard/ui/activity/MainActivity.java
new file mode 100644
index 0000000..9791f0d
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/activity/MainActivity.java
@@ -0,0 +1,99 @@
+package com.ar.ardrawingboard.ui.activity;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.ar.ardrawingboard.R;
+import com.ar.ardrawingboard.ui.adapter.MainAdapter;
+import com.ar.ardrawingboard.databinding.ActivityMainBinding;
+import com.ar.ardrawingboard.databinding.MainTabItemCustomBinding;
+import com.google.android.material.tabs.TabLayout;
+import com.google.android.material.tabs.TabLayoutMediator;
+
+public class MainActivity extends AppCompatActivity {
+    private ActivityMainBinding viewBinding;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        initializeViewBinding();
+        configureViewPager();
+        setupTabNavigation();
+    }
+
+    private void initializeViewBinding() {
+        viewBinding = ActivityMainBinding.inflate(getLayoutInflater());
+        setContentView(viewBinding.getRoot());
+    }
+
+    private void configureViewPager() {
+        MainAdapter viewPagerAdapter = new MainAdapter(this);
+        viewBinding.mainViewpager.setAdapter(viewPagerAdapter);
+    }
+
+    private void setupTabNavigation() {
+        configureTabMediator();
+        attachTabSelectionListener();
+    }
+
+    private void configureTabMediator() {
+        new TabLayoutMediator(viewBinding.mainTablayout, viewBinding.mainViewpager, (tab, position) -> {
+            MainTabItemCustomBinding customTabBinding = MainTabItemCustomBinding.inflate(
+                    LayoutInflater.from(MainActivity.this));
+            tab.setCustomView(customTabBinding.getRoot());
+            applyTabStyle(customTabBinding, position);
+        }).attach();
+    }
+
+    private void applyTabStyle(MainTabItemCustomBinding tabBinding, int index) {
+        int iconResource;
+        boolean showDot = false;
+
+        switch (index) {
+            case 0:
+                iconResource = R.drawable.home;
+                showDot = true;
+                break;
+            case 1:
+                iconResource = R.drawable.import_image;
+                break;
+            case 2:
+                iconResource = R.drawable.collection;
+                break;
+            default:
+                iconResource = R.drawable.home;
+                break;
+        }
+
+        tabBinding.iconCustom.setImageResource(iconResource);
+        tabBinding.dotView.setVisibility(showDot ? View.VISIBLE : View.GONE);
+    }
+
+    private void attachTabSelectionListener() {
+        viewBinding.mainTablayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
+            @Override
+            public void onTabSelected(TabLayout.Tab selectedTab) {
+                updateDotVisibility(selectedTab, true);
+            }
+
+            @Override
+            public void onTabUnselected(TabLayout.Tab unselectedTab) {
+                updateDotVisibility(unselectedTab, false);
+            }
+
+            @Override
+            public void onTabReselected(TabLayout.Tab tab) {
+            }
+
+            private void updateDotVisibility(TabLayout.Tab tab, boolean isVisible) {
+                View dot = tab.view.findViewById(R.id.dot_view);
+                if (dot != null) {
+                    dot.setVisibility(isVisible ? View.VISIBLE : View.GONE);
+                }
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/activity/SplashActivity.java b/app/src/main/java/com/ar/ardrawingboard/ui/activity/SplashActivity.java
new file mode 100644
index 0000000..7070a52
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/activity/SplashActivity.java
@@ -0,0 +1,66 @@
+package com.ar.ardrawingboard.ui.activity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.CountDownTimer;
+import android.widget.ProgressBar;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.ar.ardrawingboard.R;
+import com.ar.ardrawingboard.databinding.ActivitySplashBinding;
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.resource.bitmap.CenterCrop;
+import com.bumptech.glide.load.resource.bitmap.RoundedCorners;
+
+public class SplashActivity extends AppCompatActivity {
+    private ActivitySplashBinding binding;
+    private static final long totalTime = 1000;
+    private CountDownTimer countDownTimer;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        binding = ActivitySplashBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        Glide.with(this)
+                .load(R.mipmap.ic_launcher)
+                .transform(new CenterCrop(),new RoundedCorners(32))
+                .placeholder(R.mipmap.placeholder)
+                .error(R.mipmap.placeholder)
+                .into(binding.splashImage);
+
+        countDownTimer = new CountDownTimer(totalTime,100) {
+            @Override
+            public void onTick(long millisUntilFinished) {
+                int percentage = (int) (100 - (float) millisUntilFinished / totalTime * 100);
+                binding.progressBar.setProgress(percentage);
+            }
+
+            @Override
+            public void onFinish() {
+                startMain();
+            }
+        };
+
+        countDownTimer.start();
+    }
+
+    private void startMain() {
+        binding.progressBar.setProgress(100);
+
+        Intent intent = new Intent(SplashActivity.this, MainActivity.class);
+        startActivity(intent);
+        finish();
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (countDownTimer != null) {
+            countDownTimer.cancel();
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/adapter/CategoryFragmentAdapter.java b/app/src/main/java/com/ar/ardrawingboard/ui/adapter/CategoryFragmentAdapter.java
new file mode 100644
index 0000000..a873285
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/adapter/CategoryFragmentAdapter.java
@@ -0,0 +1,94 @@
+package com.ar.ardrawingboard.ui.adapter;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.ar.ardrawingboard.R;
+import com.ar.ardrawingboard.ui.activity.CategoryActivity;
+import com.ar.ardrawingboard.room.BoardEntry;
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.resource.bitmap.CenterCrop;
+import com.bumptech.glide.load.resource.bitmap.RoundedCorners;
+
+import java.util.List;
+
+public class CategoryFragmentAdapter extends RecyclerView.Adapter<CategoryFragmentAdapter.ViewHolder> {
+    private final Activity hostActivity;
+    private List<BoardEntry> boardList;
+    private final List<String> rawCategoryList;
+    private final List<String> shownCategoryNames;
+
+    public CategoryFragmentAdapter(Activity hostActivity, List<BoardEntry> boardList,
+                                   List<String> rawCategoryList, List<String> shownCategoryNames) {
+        this.hostActivity = hostActivity;
+        this.boardList = boardList;
+        this.rawCategoryList = rawCategoryList;
+        this.shownCategoryNames = shownCategoryNames;
+    }
+
+    public void refreshList(List<BoardEntry> updatedBoards) {
+        this.boardList = updatedBoards;
+        notifyDataSetChanged();
+    }
+
+    @NonNull
+    @Override
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parentGroup, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(parentGroup.getContext());
+        View itemLayout = inflater.inflate(R.layout.item_category, parentGroup, false);
+        return new ViewHolder(itemLayout);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder itemHolder, int pos) {
+        if (pos >= boardList.size() || pos >= shownCategoryNames.size() || pos >= rawCategoryList.size())
+            return;
+
+        BoardEntry entry = boardList.get(pos);
+        String shownName = shownCategoryNames.get(pos);
+        String rawName = rawCategoryList.get(pos);
+
+        itemHolder.titleView.setText(shownName);
+
+        String assetUri = "file:///android_asset/" + entry.getPath();
+
+        Glide.with(hostActivity)
+                .load(assetUri)
+                .transform(new CenterCrop(),new RoundedCorners(32))
+                .placeholder(R.mipmap.placeholder)
+                .error(R.mipmap.placeholder)
+                .into(itemHolder.thumbnail);
+
+        itemHolder.thumbnail.setOnClickListener(view -> {
+            Intent goToCategory = new Intent(hostActivity, CategoryActivity.class);
+            goToCategory.putExtra("Original", rawName);
+            goToCategory.putExtra("Title", shownName);
+            hostActivity.startActivity(goToCategory);
+        });
+    }
+
+    @Override
+    public int getItemCount() {
+        return boardList != null ? boardList.size() : 0;
+    }
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+
+        final ImageView thumbnail;
+        final TextView titleView;
+
+        public ViewHolder(@NonNull View itemView) {
+            super(itemView);
+            thumbnail = itemView.findViewById(R.id.item_imageview);
+            titleView = itemView.findViewById(R.id.item_textview);
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/adapter/FavoriteAndCategoryAdapter.java b/app/src/main/java/com/ar/ardrawingboard/ui/adapter/FavoriteAndCategoryAdapter.java
new file mode 100644
index 0000000..e8af634
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/adapter/FavoriteAndCategoryAdapter.java
@@ -0,0 +1,111 @@
+package com.ar.ardrawingboard.ui.adapter;
+
+import android.content.Context;
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.ar.ardrawingboard.R;
+import com.ar.ardrawingboard.ui.activity.BoardActivity;
+import com.ar.ardrawingboard.room.AppDatabase;
+import com.ar.ardrawingboard.room.BoardEntry;
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.resource.bitmap.CenterCrop;
+import com.bumptech.glide.load.resource.bitmap.RoundedCorners;
+
+import java.util.List;
+import java.util.concurrent.Executors;
+
+public class FavoriteAndCategoryAdapter extends RecyclerView.Adapter<FavoriteAndCategoryAdapter.ViewHolder> {
+
+    private List<BoardEntry> favoritesList;
+    private final Context appContext;
+
+    public FavoriteAndCategoryAdapter(Context appContext, List<BoardEntry> favoritesList) {
+        this.appContext = appContext;
+        this.favoritesList = favoritesList;
+    }
+
+    public void refreshFavorites(List<BoardEntry> updatedList) {
+        this.favoritesList = updatedList;
+        notifyDataSetChanged();
+    }
+
+    @NonNull
+    @Override
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup root, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(appContext);
+        View viewItem = inflater.inflate(R.layout.item_import, root, false);
+        return new ViewHolder(viewItem);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int pos) {
+        BoardEntry entry = favoritesList.get(pos);
+        viewHolder.bindItem(entry);
+    }
+
+    @Override
+    public int getItemCount() {
+        return favoritesList != null ? favoritesList.size() : 0;
+    }
+
+    class ViewHolder extends RecyclerView.ViewHolder {
+
+        private final ImageView previewImage;
+        private final ImageView favToggle;
+
+        ViewHolder(@NonNull View itemLayout) {
+            super(itemLayout);
+            previewImage = itemLayout.findViewById(R.id.image_view);
+            favToggle = itemLayout.findViewById(R.id.btn_favorite);
+        }
+
+        void bindItem(BoardEntry itemData) {
+            String imagePath = itemData.getPath();
+            String finalPath = imagePath.startsWith("/data/user/") ? imagePath : "file:///android_asset/" + imagePath;
+
+            Glide.with(appContext)
+                    .load(finalPath)
+                    .transform(new CenterCrop(),new RoundedCorners(32))
+                    .placeholder(R.mipmap.placeholder)
+                    .error(R.mipmap.placeholder)
+                    .into(previewImage);
+
+            previewImage.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    Intent previewIntent = new Intent(appContext, BoardActivity.class);
+                    previewIntent.putExtra("imagePath", imagePath);
+                    appContext.startActivity(previewIntent);
+                }
+            });
+
+            favToggle.setImageResource(itemData.isFavorite() ? R.drawable.like : R.drawable.un_like);
+
+            favToggle.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    boolean updatedStatus = !itemData.isFavorite();
+                    itemData.setFavorite(updatedStatus);
+
+                    Executors.newSingleThreadExecutor().execute(() -> {
+                        AppDatabase database = AppDatabase.getInstance(appContext);
+                        database.boardEntryDao().update(itemData);
+                    });
+
+                    int position = getAdapterPosition();
+                    if (position != RecyclerView.NO_POSITION) {
+                        notifyItemChanged(position);
+                    }
+                }
+            });
+        }
+    }
+}
+
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/adapter/ImportFragmentAdapter.java b/app/src/main/java/com/ar/ardrawingboard/ui/adapter/ImportFragmentAdapter.java
new file mode 100644
index 0000000..2349724
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/adapter/ImportFragmentAdapter.java
@@ -0,0 +1,139 @@
+package com.ar.ardrawingboard.ui.adapter;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.ar.ardrawingboard.R;
+import com.ar.ardrawingboard.ui.activity.BoardActivity;
+import com.ar.ardrawingboard.room.AppDatabase;
+import com.ar.ardrawingboard.room.BoardEntry;
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
+import com.bumptech.glide.load.resource.bitmap.CenterCrop;
+import com.bumptech.glide.load.resource.bitmap.RoundedCorners;
+
+import java.util.List;
+import java.util.concurrent.Executors;
+
+public class ImportFragmentAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+    private static final int TYPE_HEADER = 0;
+    private static final int TYPE_ENTRY = 1;
+
+    private List<BoardEntry> boardItems;
+    private final Activity host;
+    private final OnHeaderClickListener headerClickCallback;
+
+    public ImportFragmentAdapter(List<BoardEntry> boardItems, Activity host, OnHeaderClickListener headerClickCallback) {
+        this.boardItems = boardItems;
+        this.host = host;
+        this.headerClickCallback = headerClickCallback;
+    }
+
+    public interface OnHeaderClickListener {
+        void onHeaderClick();
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return position == 0 ? TYPE_HEADER : TYPE_ENTRY;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parentView, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(parentView.getContext());
+
+        if (viewType == TYPE_HEADER) {
+            View headerLayout = inflater.inflate(R.layout.item_special_view, parentView, false);
+            return new HeaderHolder(headerLayout);
+        } else {
+            View itemLayout = inflater.inflate(R.layout.item_import, parentView, false);
+            return new EntryHolder(itemLayout);
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int pos) {
+        if (getItemViewType(pos) == TYPE_HEADER) {
+            HeaderHolder header = (HeaderHolder) viewHolder;
+            header.itemView.setOnClickListener(v -> {
+                if (headerClickCallback != null) {
+                    headerClickCallback.onHeaderClick();
+                }
+            });
+        } else {
+            EntryHolder holder = (EntryHolder) viewHolder;
+            BoardEntry item = boardItems.get(pos - 1);
+
+            holder.bindItem(item);
+
+            holder.imagePreview.setOnClickListener(v -> {
+                Intent intent = new Intent(host, BoardActivity.class);
+                intent.putExtra("imagePath", item.getPath());
+                host.startActivity(intent);
+            });
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return boardItems != null ? boardItems.size() + 1 : 1;
+    }
+
+    public void refreshItems(List<BoardEntry> updatedList) {
+        this.boardItems = updatedList;
+        notifyDataSetChanged();
+    }
+
+    static class HeaderHolder extends RecyclerView.ViewHolder {
+        public HeaderHolder(@NonNull View itemView) {
+            super(itemView);
+        }
+    }
+
+    class EntryHolder extends RecyclerView.ViewHolder {
+        ImageView imagePreview;
+        ImageView favoriteToggle;
+
+        public EntryHolder(@NonNull View itemView) {
+            super(itemView);
+            imagePreview = itemView.findViewById(R.id.image_view);
+            favoriteToggle = itemView.findViewById(R.id.btn_favorite);
+        }
+
+        void bindItem(BoardEntry data) {
+            String imgPath = data.getPath();
+
+            Glide.with(host)
+                    .load(imgPath)
+                    .diskCacheStrategy(DiskCacheStrategy.ALL)
+                    .transform(new CenterCrop(),new RoundedCorners(32))
+                    .placeholder(R.mipmap.placeholder)
+                    .error(R.mipmap.placeholder)
+                    .into(imagePreview);
+
+            favoriteToggle.setImageResource(data.isFavorite() ? R.drawable.like : R.drawable.un_like);
+
+            favoriteToggle.setOnClickListener(view -> {
+                boolean toggled = !data.isFavorite();
+                data.setFavorite(toggled);
+
+                Executors.newSingleThreadExecutor().execute(() ->
+                        AppDatabase.getInstance(host).boardEntryDao().update(data)
+                );
+
+                int currentPos = getAdapterPosition();
+                if (currentPos != RecyclerView.NO_POSITION) {
+                    notifyItemChanged(currentPos);
+                }
+            });
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/adapter/MainAdapter.java b/app/src/main/java/com/ar/ardrawingboard/ui/adapter/MainAdapter.java
new file mode 100644
index 0000000..9959c74
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/adapter/MainAdapter.java
@@ -0,0 +1,36 @@
+package com.ar.ardrawingboard.ui.adapter;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentActivity;
+import androidx.viewpager2.adapter.FragmentStateAdapter;
+
+import com.ar.ardrawingboard.ui.fragment.CategoryFragment;
+import com.ar.ardrawingboard.ui.fragment.FavoriteFragment;
+import com.ar.ardrawingboard.ui.fragment.ImportFragment;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainAdapter extends FragmentStateAdapter {
+    private final List<Fragment> fragmentList;
+
+    public MainAdapter(@NonNull FragmentActivity fragmentActivity) {
+        super(fragmentActivity);
+        fragmentList = new ArrayList<>();
+        fragmentList.add(new CategoryFragment());
+        fragmentList.add(new ImportFragment());
+        fragmentList.add(new FavoriteFragment());
+    }
+
+    @NonNull
+    @Override
+    public Fragment createFragment(int position) {
+        return fragmentList.get(position);
+    }
+
+    @Override
+    public int getItemCount() {
+        return fragmentList.size();
+    }
+}
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/fragment/CategoryFragment.java b/app/src/main/java/com/ar/ardrawingboard/ui/fragment/CategoryFragment.java
new file mode 100644
index 0000000..b1aa7b1
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/fragment/CategoryFragment.java
@@ -0,0 +1,98 @@
+package com.ar.ardrawingboard.ui.fragment;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.recyclerview.widget.GridLayoutManager;
+
+import com.ar.ardrawingboard.ui.adapter.CategoryFragmentAdapter;
+import com.ar.ardrawingboard.databinding.FragmentCategoryBinding;
+import com.ar.ardrawingboard.room.AppDatabase;
+import com.ar.ardrawingboard.room.BoardEntry;
+import com.ar.ardrawingboard.util.ItemDecoration;
+import com.ar.ardrawingboard.util.Names;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+public class CategoryFragment extends Fragment {
+    private FragmentCategoryBinding binding;
+    private final List<String> originalCategories = Names.getAllImage();
+    private final List<String> displayCategories = new ArrayList<>();
+    private CategoryFragmentAdapter adapter;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        binding = FragmentCategoryBinding.inflate(inflater, container, false);
+
+        initData();
+        initEvent();
+        setupRecyclerView();
+
+        loadImages(originalCategories);
+
+        return binding.getRoot();
+    }
+
+    private void initData() {
+        for (String category : originalCategories) {
+            displayCategories.add(category.substring(4));
+        }
+    }
+
+    private void initEvent() {
+    }
+
+    private void setupRecyclerView() {
+        binding.recyclerview.setLayoutManager(new GridLayoutManager(getContext(), 2));
+
+        adapter = new CategoryFragmentAdapter(requireActivity(), new ArrayList<>(), originalCategories, displayCategories);
+        binding.recyclerview.setAdapter(adapter);
+
+        binding.recyclerview.addItemDecoration(new ItemDecoration(16, 19, 10));
+    }
+
+    private void loadImages(List<String> originalList) {
+        Map<Integer, List<BoardEntry>> queryResultsMap = new HashMap<>();
+        int totalQueries = originalList.size();
+
+        for (int i = 0; i < totalQueries; i++) {
+            String original = originalList.get(i);
+            int finalI = i;
+            AppDatabase.getInstance(requireContext())
+                    .boardEntryDao()
+                    .getImageByPathLimitOne(original)
+                    .observe(getViewLifecycleOwner(), new Observer<List<BoardEntry>>() {
+                        @Override
+                        public void onChanged(List<BoardEntry> imageEntries) {
+                            queryResultsMap.put(finalI, imageEntries);
+                            if (queryResultsMap.size() == totalQueries) {
+                                List<BoardEntry> allImageEntries = new CopyOnWriteArrayList<>();
+                                for (int j = 0; j < totalQueries; j++) {
+                                    List<BoardEntry> currentEntries = queryResultsMap.get(j);
+                                    if (currentEntries!= null) {
+                                        allImageEntries.addAll(currentEntries);
+                                    }
+                                }
+                                adapter.refreshList(allImageEntries);
+                            }
+                        }
+                    });
+        }
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/fragment/FavoriteFragment.java b/app/src/main/java/com/ar/ardrawingboard/ui/fragment/FavoriteFragment.java
new file mode 100644
index 0000000..d224f7d
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/fragment/FavoriteFragment.java
@@ -0,0 +1,69 @@
+package com.ar.ardrawingboard.ui.fragment;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.recyclerview.widget.GridLayoutManager;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.ar.ardrawingboard.ui.adapter.FavoriteAndCategoryAdapter;
+import com.ar.ardrawingboard.databinding.FragmentFavoriteBinding;
+import com.ar.ardrawingboard.room.AppDatabase;
+import com.ar.ardrawingboard.room.BoardEntry;
+import com.ar.ardrawingboard.util.ItemDecoration;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class FavoriteFragment extends Fragment {
+    private FragmentFavoriteBinding binding;
+    private FavoriteAndCategoryAdapter adapter;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        binding = FragmentFavoriteBinding.inflate(inflater, container, false);
+
+        setupRecyclerView();
+        loadFavoriteImages();
+
+        return binding.getRoot();
+    }
+
+    private void setupRecyclerView() {
+        binding.recyclerview.setLayoutManager(new GridLayoutManager(getContext(), 2));
+
+        adapter = new FavoriteAndCategoryAdapter(requireContext(),new ArrayList<>());
+        binding.recyclerview.setAdapter(adapter);
+
+        binding.recyclerview.addItemDecoration(new ItemDecoration(16, 19, 10));
+    }
+
+    private void loadFavoriteImages() {
+        AppDatabase.getInstance(requireContext())
+                .boardEntryDao()
+                .getFavorite()
+                .observe(getViewLifecycleOwner(), new Observer<List<BoardEntry>>() {
+                    @Override
+                    public void onChanged(List<BoardEntry> imageEntries) {
+                        if (imageEntries.isEmpty()) {
+                            binding.backgroundText.setVisibility(View.VISIBLE);
+                        } else {
+                            binding.backgroundText.setVisibility(View.GONE);
+                        }
+                        adapter.refreshFavorites(imageEntries);
+                    }
+                });
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/ui/fragment/ImportFragment.java b/app/src/main/java/com/ar/ardrawingboard/ui/fragment/ImportFragment.java
new file mode 100644
index 0000000..b42aa17
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/ui/fragment/ImportFragment.java
@@ -0,0 +1,178 @@
+package com.ar.ardrawingboard.ui.fragment;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.Uri;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Toast;
+
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.activity.result.contract.ActivityResultContracts;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.LiveData;
+import androidx.recyclerview.widget.GridLayoutManager;
+
+import com.ar.ardrawingboard.databinding.FragmentImportBinding;
+import com.ar.ardrawingboard.room.AppDatabase;
+import com.ar.ardrawingboard.room.BoardEntry;
+import com.ar.ardrawingboard.room.BoardEntryDao;
+import com.ar.ardrawingboard.ui.adapter.ImportFragmentAdapter;
+import com.ar.ardrawingboard.util.ItemDecoration;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ImportFragment extends Fragment implements ImportFragmentAdapter.OnHeaderClickListener {
+    private FragmentImportBinding uiBinding;
+    private ImportFragmentAdapter imageAdapter;
+    private final List<String> storedImagePaths = new ArrayList<>();
+    private BoardEntryDao databaseDao;
+    private static final int MAX_IMAGE_SIZE_BYTES = 10 * 1024 * 1024;
+
+    private final ActivityResultLauncher<Intent> imagePickerLauncher = registerForActivityResult(
+            new ActivityResultContracts.StartActivityForResult(),
+            result -> {
+                if (result.getResultCode() == Activity.RESULT_OK && result.getData() != null) {
+                    Uri imageUri = result.getData().getData();
+                    if (imageUri != null) {
+                        processSelectedImage(imageUri);
+                    }
+                }
+            });
+
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        uiBinding = FragmentImportBinding.inflate(inflater, container, false);
+        initializeRecyclerView();
+        setupDatabase();
+        observeImageData();
+        return uiBinding.getRoot();
+    }
+
+    private void initializeRecyclerView() {
+        uiBinding.recyclerview.setLayoutManager(new GridLayoutManager(requireContext(), 2));
+        uiBinding.recyclerview.addItemDecoration(new ItemDecoration(16, 19, 10));
+        imageAdapter = new ImportFragmentAdapter(new ArrayList<>(), requireActivity(), this);
+        uiBinding.recyclerview.setAdapter(imageAdapter);
+    }
+
+    private void setupDatabase() {
+        AppDatabase database = AppDatabase.getInstance(requireContext());
+        databaseDao = database.boardEntryDao();
+    }
+
+    private void observeImageData() {
+        LiveData<List<BoardEntry>> imageLiveData = databaseDao.getImportLive();
+        imageLiveData.observe(getViewLifecycleOwner(), entries -> imageAdapter.refreshItems(entries));
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        imageAdapter.notifyDataSetChanged();
+    }
+
+    @Override
+    public void onHeaderClick() {
+        launchImagePicker();
+    }
+
+    private void launchImagePicker() {
+        Intent pickIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
+        imagePickerLauncher.launch(pickIntent);
+    }
+
+    private void processSelectedImage(Uri imageUri) {
+        try {
+            if (isImageSizeValid(imageUri)) {
+                storeImageLocally(imageUri);
+            } else {
+                Toast.makeText(requireContext(), "Image exceeds size limit", Toast.LENGTH_SHORT).show();
+            }
+        } catch (IOException e) {
+            Toast.makeText(requireContext(), "Error checking image: " + e.getMessage(), Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private boolean isImageSizeValid(Uri uri) throws IOException {
+        try (InputStream stream = requireContext().getContentResolver().openInputStream(uri)) {
+            if (stream == null) return false;
+            return stream.available() <= MAX_IMAGE_SIZE_BYTES;
+        }
+    }
+
+    private void storeImageLocally(Uri uri) {
+        try {
+            InputStream inputStream = requireContext().getContentResolver().openInputStream(uri);
+            Bitmap imageBitmap = BitmapFactory.decodeStream(inputStream);
+            if (imageBitmap == null) {
+                Toast.makeText(requireContext(), "Failed to load image", Toast.LENGTH_SHORT).show();
+                return;
+            }
+
+            File storageDir = requireContext().getFilesDir();
+            File newImageFile = new File(storageDir, System.currentTimeMillis() + ".jpg");
+            try (FileOutputStream outputStream = new FileOutputStream(newImageFile)) {
+                imageBitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream);
+            }
+            if (inputStream != null) {
+                inputStream.close();
+            }
+
+            String newImagePath = newImageFile.getAbsolutePath();
+            saveImageToDatabase(newImagePath, newImageFile);
+
+        } catch (IOException e) {
+            Toast.makeText(requireContext(), "Error saving image: " + e.getMessage(), Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private void saveImageToDatabase(String imagePath, File imageFile) {
+        new Thread(() -> {
+            if (isDuplicateImage(imagePath)) {
+                requireActivity().runOnUiThread(() ->
+                        Toast.makeText(requireContext(), "Image already exists", Toast.LENGTH_SHORT).show());
+                imageFile.delete();
+                return;
+            }
+            storedImagePaths.add(imagePath);
+            databaseDao.insert(new BoardEntry(false, true, imagePath));
+        }).start();
+    }
+
+    private boolean isDuplicateImage(String newImagePath) {
+        File newFile = new File(newImagePath);
+        for (String existingPath : storedImagePaths) {
+            if (areFilesEqual(new File(existingPath), newFile)) {
+                return true;
+            }
+        }
+        List<BoardEntry> entries = databaseDao.getImport();
+        for (BoardEntry entry : entries) {
+            if (areFilesEqual(new File(entry.getPath()), newFile)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean areFilesEqual(File file1, File file2) {
+        return file1.length() == file2.length();
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        uiBinding = null;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/util/CommonUtils.java b/app/src/main/java/com/ar/ardrawingboard/util/CommonUtils.java
new file mode 100644
index 0000000..0d1dbc4
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/util/CommonUtils.java
@@ -0,0 +1,17 @@
+package com.ar.ardrawingboard.util;
+
+import android.content.Context;
+import android.graphics.Point;
+import android.util.DisplayMetrics;
+import android.view.WindowManager;
+
+public class CommonUtils {
+    public static Point getScreenSize(Context context) {
+        DisplayMetrics metrics = new DisplayMetrics();
+        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        if (wm != null) {
+            wm.getDefaultDisplay().getMetrics(metrics);
+        }
+        return new Point(metrics.widthPixels, metrics.heightPixels);
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/util/ImageUtils.java b/app/src/main/java/com/ar/ardrawingboard/util/ImageUtils.java
new file mode 100644
index 0000000..82d15d0
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/util/ImageUtils.java
@@ -0,0 +1,31 @@
+package com.ar.ardrawingboard.util;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.widget.ImageView;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+public class ImageUtils {
+
+    public static Bitmap loadBitmapFromStorage(String path) {
+        return BitmapFactory.decodeFile(path);
+    }
+
+    public static Bitmap loadBitmapFromAssets(Context context, String path) {
+        try (InputStream inputStream = context.getAssets().open(path)) {
+            return BitmapFactory.decodeStream(inputStream);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public static void displayImageToImageView(ImageView imageView, Bitmap bitmap) {
+        if (bitmap != null) {
+            imageView.setImageBitmap(bitmap);
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/util/ItemDecoration.java b/app/src/main/java/com/ar/ardrawingboard/util/ItemDecoration.java
new file mode 100644
index 0000000..0987b9c
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/util/ItemDecoration.java
@@ -0,0 +1,75 @@
+package com.ar.ardrawingboard.util;
+
+import android.graphics.Rect;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.StaggeredGridLayoutManager;
+
+import com.ar.ardrawingboard.MyApplication;
+
+public class ItemDecoration extends RecyclerView.ItemDecoration {
+
+    private int v, h, ex;
+
+    public ItemDecoration(int v, int h, int ex) {
+        this.v = Math.round(dpToPx(v));
+        this.h = Math.round(dpToPx(h));
+        this.ex = Math.round(dpToPx(ex));
+    }
+
+    @Override
+    public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
+        super.getItemOffsets(outRect, view, parent, state);
+        int spanCount = 1;
+        int spanSize = 1;
+        int spanIndex = 0;
+
+        int childAdapterPosition = parent.getChildAdapterPosition(view);
+        RecyclerView.LayoutManager layoutManager = parent.getLayoutManager();
+        if (layoutManager instanceof StaggeredGridLayoutManager) {
+            StaggeredGridLayoutManager staggeredGridLayoutManager = (StaggeredGridLayoutManager) layoutManager;
+            StaggeredGridLayoutManager.LayoutParams layoutParams = (StaggeredGridLayoutManager.LayoutParams) view.getLayoutParams();
+            spanCount = staggeredGridLayoutManager.getSpanCount();
+            if (layoutParams.isFullSpan()) {
+                spanSize = spanCount;
+            }
+            spanIndex = layoutParams.getSpanIndex();
+        } else if (layoutManager instanceof GridLayoutManager) {
+            GridLayoutManager gridLayoutManager = (GridLayoutManager) layoutManager;
+            GridLayoutManager.LayoutParams layoutParams = (GridLayoutManager.LayoutParams) view.getLayoutParams();
+            spanCount = gridLayoutManager.getSpanCount();
+            spanSize = gridLayoutManager.getSpanSizeLookup().getSpanSize(childAdapterPosition);
+            spanIndex = layoutParams.getSpanIndex();
+        } else if (layoutManager instanceof LinearLayoutManager) {
+            outRect.left = v;
+            outRect.right = v;
+            outRect.bottom = h;
+        }
+
+        if (spanSize == spanCount) {
+            outRect.left = v + ex;
+            outRect.right = v + ex;
+            outRect.bottom = h;
+
+        } else {
+            int itemAllSpacing = (v * (spanCount + 1) + ex * 2) / spanCount;
+            int left = v * (spanIndex + 1) - itemAllSpacing * spanIndex + ex;
+            int right = itemAllSpacing - left;
+            outRect.left = left;
+            outRect.right = right;
+            outRect.bottom = h;
+
+        }
+
+    }
+
+
+    public static float dpToPx(float dpValue) {
+        float density = MyApplication.application.getResources().getDisplayMetrics().density;
+        return density * dpValue + 0.5f;
+    }
+}
diff --git a/app/src/main/java/com/ar/ardrawingboard/util/Names.java b/app/src/main/java/com/ar/ardrawingboard/util/Names.java
new file mode 100644
index 0000000..12c87d3
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/util/Names.java
@@ -0,0 +1,47 @@
+package com.ar.ardrawingboard.util;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Names {
+
+    public static String Class_Animals = "png_Animals";
+    public static String Class_birds = "png_Birds";
+    public static String Class_butterfly = "png_Butterfly";
+    public static String Class_cafe = "png_Cafe";
+    public static String Class_cartoons = "png_Cartoons";
+    public static String Class_christmas = "png_Christmas";
+    public static String Class_festivals = "png_Festivals";
+    public static String Class_flowers = "png_Flowers";
+    public static String Class_fruits = "png_Fruits";
+    public static String Class_general = "png_General";
+
+    public static String Class_mehndi = "png_Mehndi";
+    public static String Class_nature = "png_Nature";
+    public static String Class_properties = "png_Properties";
+    public static String Class_rangoli = "png_Rangoli";
+    public static String Class_sports = "png_Sports";
+    public static String Class_vehicles = "png_Vehicles";
+
+    public static List<String> getAllImage() {
+        ArrayList<String> list = new ArrayList<>();
+        list.add(Class_Animals);
+        list.add(Class_birds);
+        list.add(Class_butterfly);
+        list.add(Class_cafe);
+        list.add(Class_cartoons);
+        list.add(Class_christmas);
+        list.add(Class_festivals);
+        list.add(Class_flowers);
+        list.add(Class_fruits);
+        list.add(Class_general);
+        list.add(Class_mehndi);
+        list.add(Class_nature);
+        list.add(Class_properties);
+        list.add(Class_rangoli);
+        list.add(Class_sports);
+        list.add(Class_vehicles);
+        return list;
+    }
+
+}
diff --git a/app/src/main/java/com/ar/ardrawingboard/util/PermissionUtils.java b/app/src/main/java/com/ar/ardrawingboard/util/PermissionUtils.java
new file mode 100644
index 0000000..f53a6f9
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/util/PermissionUtils.java
@@ -0,0 +1,44 @@
+package com.ar.ardrawingboard.util;
+
+import android.Manifest;
+import android.app.Activity;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.os.Build;
+
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+public class PermissionUtils {
+    public static boolean hasPermissions(Context context, String[] permissions) {
+        for (String permission : permissions) {
+            if (ContextCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public static void requestPermissions(Activity activity, String[] permissions, int requestCode) {
+        ActivityCompat.requestPermissions(activity, permissions, requestCode);
+    }
+
+    public static boolean handlePermissionsResult(int[] grantResults) {
+        for (int result : grantResults) {
+            if (result != PackageManager.PERMISSION_GRANTED) return false;
+        }
+        return true;
+    }
+
+    public static String[] getCameraAndStoragePermissions() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            return new String[]{Manifest.permission.CAMERA, Manifest.permission.READ_MEDIA_IMAGES};
+        } else {
+            return new String[]{
+                    Manifest.permission.CAMERA,
+                    Manifest.permission.READ_EXTERNAL_STORAGE,
+                    Manifest.permission.WRITE_EXTERNAL_STORAGE
+            };
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/ar/ardrawingboard/util/RoomInit.java b/app/src/main/java/com/ar/ardrawingboard/util/RoomInit.java
new file mode 100644
index 0000000..7c7db34
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/util/RoomInit.java
@@ -0,0 +1,29 @@
+package com.ar.ardrawingboard.util;
+
+import android.content.Context;
+
+import com.ar.ardrawingboard.room.AppDatabase;
+import com.ar.ardrawingboard.room.BoardEntry;
+import com.ar.ardrawingboard.room.BoardEntryDao;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class RoomInit {
+
+    private final BoardEntryDao boardEntryDao;
+
+    public RoomInit(Context context) {
+        AppDatabase db = AppDatabase.getInstance(context);
+        boardEntryDao = db.boardEntryDao();
+    }
+
+    public void insertAllImages(List<String> imagePaths) {
+        List<BoardEntry> imageEntries = new ArrayList<>();
+        for (String path : imagePaths) {
+            imageEntries.add(new BoardEntry(false, false, path));
+        }
+
+        boardEntryDao.insertAll(imageEntries);
+    }
+}
diff --git a/app/src/main/java/com/ar/ardrawingboard/util/TouchUtils.java b/app/src/main/java/com/ar/ardrawingboard/util/TouchUtils.java
new file mode 100644
index 0000000..c944b7b
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/util/TouchUtils.java
@@ -0,0 +1,61 @@
+package com.ar.ardrawingboard.util;
+
+import android.graphics.Bitmap;
+import android.graphics.Matrix;
+import android.graphics.Point;
+import android.graphics.PointF;
+import android.view.MotionEvent;
+import android.widget.ImageView;
+
+public class TouchUtils {
+    private static final int NONE = 0, DRAG = 1, ZOOM = 2;
+    private static float initialDistance = 0f;
+    private static final Matrix matrix = new Matrix();
+    private static final Matrix savedMatrix = new Matrix();
+    private static final PointF startPoint = new PointF();
+    private static int mode = NONE;
+
+    public static boolean handleTouchEvent(ImageView view, MotionEvent event) {
+        switch (event.getActionMasked()) {
+            case MotionEvent.ACTION_DOWN:
+                savedMatrix.set(matrix);
+                startPoint.set(event.getX(), event.getY());
+                mode = DRAG;
+                break;
+            case MotionEvent.ACTION_POINTER_DOWN:
+                initialDistance = Tracing.getDistance(event);
+                if (initialDistance > 10f) {
+                    savedMatrix.set(matrix);
+                    mode = ZOOM;
+                }
+                break;
+            case MotionEvent.ACTION_MOVE:
+                if (mode == DRAG) {
+                    matrix.set(savedMatrix);
+                    matrix.postTranslate(event.getX() - startPoint.x, event.getY() - startPoint.y);
+                } else if (mode == ZOOM) {
+                    float newDist = Tracing.getDistance(event);
+                    if (newDist > 10f) {
+                        float scale = newDist / initialDistance;
+                        matrix.set(savedMatrix);
+                        matrix.postScale(scale, scale, view.getWidth() / 2f, view.getHeight() / 2f);
+                    }
+                }
+                break;
+            case MotionEvent.ACTION_UP:
+            case MotionEvent.ACTION_POINTER_UP:
+                mode = NONE;
+                break;
+        }
+        view.setImageMatrix(matrix);
+        return true;
+    }
+
+    public static void initPosition(ImageView imageView, Bitmap bitmap, Point screenSize) {
+        float newX = screenSize.x / 2f - bitmap.getWidth() / 2f;
+        float newY = screenSize.y / 2f - bitmap.getHeight() / 2f;
+        matrix.postTranslate(newX, newY);
+        imageView.setImageMatrix(matrix);
+    }
+}
+
diff --git a/app/src/main/java/com/ar/ardrawingboard/util/Tracing.java b/app/src/main/java/com/ar/ardrawingboard/util/Tracing.java
new file mode 100644
index 0000000..cdcd2de
--- /dev/null
+++ b/app/src/main/java/com/ar/ardrawingboard/util/Tracing.java
@@ -0,0 +1,12 @@
+package com.ar.ardrawingboard.util;
+
+import android.view.MotionEvent;
+
+public class Tracing {
+
+    public static float getDistance(MotionEvent event) {
+        float dx = event.getX(1) - event.getX(0);
+        float dy = event.getY(1) - event.getY(0);
+        return (float) Math.sqrt(dx * dx + dy * dy);
+    }
+}
diff --git a/app/src/main/res/drawable/add.xml b/app/src/main/res/drawable/add.xml
new file mode 100644
index 0000000..94f4be4
--- /dev/null
+++ b/app/src/main/res/drawable/add.xml
@@ -0,0 +1,41 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="6dp"
+    android:height="6dp"
+    android:viewportWidth="6"
+    android:viewportHeight="6">
+  <group>
+    <clip-path
+        android:pathData="M0.0516,0.2h5.4586v5.3872h-5.4586z"/>
+    <path
+        android:pathData="M2.7851,5.4964C2.9255,5.4964 3.0411,5.3809 3.0411,5.2407V3.1205H5.1634C5.3038,3.1205 5.4194,3.005 5.4194,2.8647C5.4194,2.7245 5.3038,2.6089 5.1634,2.6089H3.0411V0.5547C3.0411,0.4144 2.9255,0.2989 2.7851,0.2989C2.6447,0.2989 2.5291,0.4144 2.5291,0.5547V2.6089H0.4068C0.2664,2.6089 0.1508,2.7245 0.1508,2.8647C0.1508,3.005 0.2664,3.1205 0.4068,3.1205H2.5291V5.2407C2.5291,5.3809 2.6447,5.4964 2.7851,5.4964Z">
+      <aapt:attr name="android:fillColor">
+        <gradient 
+            android:startX="0.1508"
+            android:startY="2.8977"
+            android:endX="5.4194"
+            android:endY="2.8977"
+            android:type="linear">
+          <item android:offset="0" android:color="#FF8457F2"/>
+          <item android:offset="0.6" android:color="#FF7651F4"/>
+          <item android:offset="1" android:color="#FF6B4DF7"/>
+        </gradient>
+      </aapt:attr>
+    </path>
+    <path
+        android:pathData="M2.7851,5.5872C2.5869,5.5872 2.43,5.4304 2.43,5.2325V3.2112H0.4067C0.2085,3.2112 0.0516,3.0545 0.0516,2.8565C0.0516,2.6584 0.2085,2.5017 0.4067,2.5017H2.43V0.5547C2.43,0.3567 2.5869,0.2 2.7851,0.2C2.9832,0.2 3.1402,0.3567 3.1402,0.5547V2.5099H5.1634C5.3616,2.5099 5.5185,2.6667 5.5185,2.8647C5.5185,3.0627 5.3616,3.2194 5.1634,3.2194H3.1402V5.2407C3.1402,5.4387 2.9832,5.5954 2.7851,5.5954V5.5872ZM0.4067,2.6997C0.3159,2.6997 0.2498,2.774 0.2498,2.8565C0.2498,2.939 0.3242,3.0132 0.4067,3.0132H2.5291C2.5786,3.0132 2.6281,3.0545 2.6281,3.1122V5.2325C2.6281,5.3232 2.7025,5.3892 2.7851,5.3892C2.8676,5.3892 2.942,5.3149 2.942,5.2325V3.1122C2.942,3.0627 2.9832,3.0132 3.0411,3.0132H5.1634C5.2542,3.0132 5.3203,2.939 5.3203,2.8565C5.3203,2.774 5.246,2.6997 5.1634,2.6997H3.0411C2.9915,2.6997 2.942,2.6584 2.942,2.6007V0.5547C2.942,0.464 2.8676,0.398 2.7851,0.398C2.7025,0.398 2.6281,0.4722 2.6281,0.5547V2.6089C2.6281,2.6584 2.5869,2.708 2.5291,2.708H0.4067V2.6997Z">
+      <aapt:attr name="android:fillColor">
+        <gradient 
+            android:startX="0.0516"
+            android:startY="2.8977"
+            android:endX="5.5102"
+            android:endY="2.8977"
+            android:type="linear">
+          <item android:offset="0" android:color="#FF8457F2"/>
+          <item android:offset="0.6" android:color="#FF7651F4"/>
+          <item android:offset="1" android:color="#FF6B4DF7"/>
+        </gradient>
+      </aapt:attr>
+    </path>
+  </group>
+</vector>
diff --git a/app/src/main/res/drawable/back.xml b/app/src/main/res/drawable/back.xml
new file mode 100644
index 0000000..3238020
--- /dev/null
+++ b/app/src/main/res/drawable/back.xml
@@ -0,0 +1,20 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="48"
+    android:viewportHeight="48">
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M13,8L6,14L13,21"
+        android:strokeWidth="4"
+        android:strokeColor="@color/black"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M6,14H28.994C35.877,14 41.722,19.62 41.99,26.5C42.274,33.77 36.267,40 28.994,40H11.998"
+        android:strokeWidth="4"
+        android:strokeColor="@color/black"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round" />
+</vector>
diff --git a/app/src/main/res/drawable/btn_fav_bg.xml b/app/src/main/res/drawable/btn_fav_bg.xml
new file mode 100644
index 0000000..55ea2f8
--- /dev/null
+++ b/app/src/main/res/drawable/btn_fav_bg.xml
@@ -0,0 +1,4 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <solid android:color="#66000000"/>
+</shape>
diff --git a/app/src/main/res/drawable/camera.xml b/app/src/main/res/drawable/camera.xml
new file mode 100644
index 0000000..15beda0
--- /dev/null
+++ b/app/src/main/res/drawable/camera.xml
@@ -0,0 +1,24 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="48"
+    android:viewportHeight="48">
+  <path
+      android:pathData="M15,12L18,6H30L33,12H15Z"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/black"/>
+  <path
+      android:pathData="M7,12L41,12A3,3 0,0 1,44 15L44,39A3,3 0,0 1,41 42L7,42A3,3 0,0 1,4 39L4,15A3,3 0,0 1,7 12z"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/black"/>
+  <path
+      android:pathData="M24,35C28.418,35 32,31.418 32,27C32,22.582 28.418,19 24,19C19.582,19 16,22.582 16,27C16,31.418 19.582,35 24,35Z"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/black"/>
+</vector>
diff --git a/app/src/main/res/drawable/camera_background.xml b/app/src/main/res/drawable/camera_background.xml
new file mode 100644
index 0000000..dec7c28
--- /dev/null
+++ b/app/src/main/res/drawable/camera_background.xml
@@ -0,0 +1,10 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <gradient
+        android:startColor="#FF8457F2"
+        android:centerColor="#FF7651F4"
+        android:endColor="#FF6B4DF7"
+        android:angle="0"
+        android:centerX="0.6" /> <!-- 设置渐变中间点的位置 -->
+
+    <corners android:radius="15dp" /> <!-- 圆角半径 -->
+</shape>
diff --git a/app/src/main/res/drawable/collection.xml b/app/src/main/res/drawable/collection.xml
new file mode 100644
index 0000000..4bfe4ab
--- /dev/null
+++ b/app/src/main/res/drawable/collection.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M853.3,426.7L170.7,426.7a42.7,42.7 0,0 0,-42.7 42.7v426.7a42.7,42.7 0,0 0,42.7 42.7h682.7a42.7,42.7 0,0 0,42.7 -42.7L896,469.3a42.7,42.7 0,0 0,-42.7 -42.7zM810.7,853.3L213.3,853.3v-341.3h597.3v341.3zM213.3,256h597.3v85.3L213.3,341.3zM298.7,85.3h426.7v85.3L298.7,170.7z"/>
+</vector>
diff --git a/app/src/main/res/drawable/dot.xml b/app/src/main/res/drawable/dot.xml
new file mode 100644
index 0000000..730e31a
--- /dev/null
+++ b/app/src/main/res/drawable/dot.xml
@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="8dp"
+    android:height="8dp"
+    android:viewportWidth="4"
+    android:viewportHeight="4">
+  <group>
+    <clip-path
+        android:pathData="M0,0h4v4h-4z"/>
+    <path
+        android:pathData="M2,4C3.1046,4 4,3.1046 4,2C4,0.8954 3.1046,0 2,0C0.8954,0 0,0.8954 0,2C0,3.1046 0.8954,4 2,4Z"
+        android:fillColor="#000000"/>
+  </group>
+</vector>
diff --git a/app/src/main/res/drawable/flash.xml b/app/src/main/res/drawable/flash.xml
new file mode 100644
index 0000000..3b18b32
--- /dev/null
+++ b/app/src/main/res/drawable/flash.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:pathData="M716.8,467.2 L595.2,467.2l64,-352c0,-12.8 -12.8,-12.8 -19.2,-6.4L300.8,537.6c-6.4,6.4 0,19.2 6.4,19.2l121.6,0 -64,352c0,12.8 12.8,12.8 19.2,6.4l339.2,-428.8C729.6,480 729.6,467.2 716.8,467.2z"
+      android:fillColor="@color/white"/>
+</vector>
diff --git a/app/src/main/res/drawable/home.xml b/app/src/main/res/drawable/home.xml
new file mode 100644
index 0000000..079e624
--- /dev/null
+++ b/app/src/main/res/drawable/home.xml
@@ -0,0 +1,18 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M846.9,969.9h-220.5a32,32 0,0 1,-32 -32v-215.4c0,-10 -14.9,-21.1 -35,-21.1h-94.9c-20,0 -35,11.2 -35,21.1v215.4a32,32 0,0 1,-32 32h-220.5c-54.6,0 -99,-38.2 -99,-85.1v-318.8l-43.8,-34.8c-20.2,-16 -31.7,-38.8 -31.7,-62.7s11.6,-46.6 31.7,-62.6L444.7,80.4c37.7,-29.9 96.8,-29.9 134.5,0l106.7,84.6a32,32 0,1 1,-39.8 50.1l-106.7,-84.6c-14.6,-11.6 -40.3,-11.6 -54.9,0L74,456.2c-4.8,3.8 -7.5,8.3 -7.5,12.5s2.7,8.7 7.5,12.5l56,44.4c7.6,6.1 12.1,15.3 12.1,25.1v334.2c0,10 15,21.1 35,21.1h188.5V722.6c0,-46.9 44.4,-85.1 99,-85.1h94.9c54.6,0 99,38.2 99,85.1v183.4h188.5c20,0 35,-11.2 35,-21.1V550.6a32,32 0,0 1,12.1 -25.1l56,-44.4c4.8,-3.8 7.5,-8.3 7.5,-12.5s-2.7,-8.7 -7.5,-12.5l-154.7,-122.7a32,32 0,1 1,39.8 -50.1l154.7,122.7c20.2,16 31.7,38.8 31.7,62.6s-11.6,46.7 -31.7,62.7l-43.8,34.8v318.8c0,46.9 -44.4,85.1 -99,85.1z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M526,592h-89.3a84.9,84.9 0,0 1,-84.8 -84.8v-123.2a84.9,84.9 0,0 1,84.8 -84.8h123.2a84.9,84.9 0,0 1,84.8 84.8v88.4a32,32 0,0 1,-64 0v-88.4a20.8,20.8 0,0 0,-20.8 -20.8h-123.2a20.8,20.8 0,0 0,-20.8 20.8v123.2a20.8,20.8 0,0 0,20.8 20.8h89.3a32,32 0,0 1,0 64z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M651.6,560a36.5,36.5 0,0 1,-72.9 0,36.4 36.4,0 1,1 72.9,0z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M615.2,598.5c-21.2,0 -38.4,-17.2 -38.4,-38.4s17.2,-38.4 38.4,-38.4 38.4,17.2 38.4,38.4 -17.2,38.4 -38.4,38.4zM615.2,525.6c-19,0 -34.4,15.5 -34.4,34.4s15.5,34.4 34.4,34.4 34.4,-15.5 34.4,-34.4c0,-19 -15.5,-34.4 -34.4,-34.4z"/>
+</vector>
diff --git a/app/src/main/res/drawable/import_image.xml b/app/src/main/res/drawable/import_image.xml
new file mode 100644
index 0000000..04dd36f
--- /dev/null
+++ b/app/src/main/res/drawable/import_image.xml
@@ -0,0 +1,15 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M705.6,133.5h153.6a25.6,25.6 0,1 0,0 -51.2h-153.6a25.6,25.6 0,1 0,0 51.2zM204.8,832a25.6,25.6 0,1 0,0 51.2h228.3a25.6,25.6 0,1 0,0 -51.2H204.8z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M902.4,184.3l-228.6,0.2L602.6,63.8A25.6,25.6 0,0 0,580.5 51.2h-458.9c-28.2,0 -51.2,23 -51.2,51.2v819.2c0,28.2 23,51.2 51.2,51.2h371.2a25.6,25.6 0,1 0,0 -51.2h-371.2V235.8l780.8,-0.3V512a25.6,25.6 0,1 0,51.2 0V235.5c0,-28.2 -23,-51.2 -51.2,-51.2zM121.6,102.4h444.3L614.4,184.5l-492.7,0.1V102.4z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M928,729.6H605.8l148.2,-148.3a25.6,25.6 0,0 0,-36.2 -36.2l-191.9,192a25.9,25.9 0,0 0,0 36.2l191.9,192a25.5,25.5 0,0 0,36.2 0,25.6 25.6,0 0,0 0,-36.2L605.8,780.8H928a25.6,25.6 0,1 0,0 -51.2z"/>
+</vector>
diff --git a/app/src/main/res/drawable/like.xml b/app/src/main/res/drawable/like.xml
new file mode 100644
index 0000000..767b63f
--- /dev/null
+++ b/app/src/main/res/drawable/like.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:fillColor="#FF0000"
+      android:pathData="M874.3,367.3c-42.9,0 -82.8,18.2 -110.8,49.2 -16.3,-17.9 -36.6,-31.4 -59.1,-39.7 -15.8,-94.1 -97.7,-166.1 -196.2,-166.1 -60.7,0 -117.1,27.4 -154.5,73.5 -37.4,-46.1 -93.8,-73.5 -154.5,-73.5C89.3,210.7 0,300 0,409.8c0,30.9 9,62 24.6,85.5 47.1,70.5 190.2,214.2 270.9,293.3l2.3,2.2c15.2,14.5 35,22.5 55.9,22.5 20.8,0 40.6,-8 55.8,-22.5l1.9,-1.9c41.6,-40.7 99.4,-98.3 152.2,-154.3 46,52.5 111.7,118.3 155,160.7 12.2,11.6 28,18.1 44.8,18.1 16.7,0 32.6,-6.4 46.2,-19.4 58.3,-57.1 161.2,-160.5 195.5,-211.8C1017.3,563.9 1024,540.8 1024,517 1024,434.4 956.8,367.3 874.3,367.3zM561.7,555.4c-6.8,-10.2 -10.7,-24.2 -10.7,-38.4 0,-56 45.6,-101.6 101.6,-101.6 2.1,0 4.1,0.3 6.2,0.4 -1,19.5 -6.6,38.4 -16.1,52.7 -15.7,23.5 -43.8,56.7 -76.6,92.7C564.6,559.4 562.9,557.1 561.7,555.4zM376.3,756c-12.4,11.8 -31.4,13.3 -46.7,-1.5 -64.2,-62.9 -218.6,-216.7 -264.9,-286.1 -10.5,-15.7 -16.5,-37.1 -16.5,-58.7 0,-83.3 67.8,-151 151.1,-151 55.8,0 106.9,30.7 133.3,80l21.2,39.7 21.2,-39.7c26.4,-49.4 77.4,-80 133.3,-80 68.5,0 126.5,45.9 144.9,108.5 -0.2,0 -0.3,-0 -0.4,-0 -82.5,0 -149.7,67.2 -149.7,149.7 0,23.8 6.7,46.9 18.8,65.1 3.1,4.6 6.9,9.8 11,15.2C475.6,657.9 412.5,720.6 376.3,756zM965.2,555.4c-33,49.4 -143.3,159.2 -190.2,205.1 -4,3.8 -14.5,8.1 -24.1,-1 -66.8,-65.5 -119.9,-120.8 -154.2,-160.4 36.7,-40.2 68.2,-77.3 86,-103.9 12.2,-18.2 20.1,-41 23.2,-64.7 15,9.3 27.7,22.4 36.4,38.7l21.2,39.7 21.2,-39.7c17.7,-33.2 52.1,-53.8 89.6,-53.8 56,0 101.6,45.6 101.6,101.6C975.9,531.2 972,545.2 965.2,555.4z"/>
+</vector>
diff --git a/app/src/main/res/drawable/photo.xml b/app/src/main/res/drawable/photo.xml
new file mode 100644
index 0000000..2e9ec8e
--- /dev/null
+++ b/app/src/main/res/drawable/photo.xml
@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="48"
+    android:viewportHeight="48">
+  <path
+      android:pathData="M38,21V40C38,41.105 37.105,42 36,42H8C6.895,42 6,41.105 6,40V12C6,10.895 6.895,10 8,10H26.364"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/black"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M12,31.031L18,23L21,26L24.5,20.5L32,31.031H12Z"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/black"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M34,10H42"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/black"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M37.995,5.795V13.795"
+      android:strokeLineJoin="round"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/black"
+      android:strokeLineCap="round"/>
+</vector>
diff --git a/app/src/main/res/drawable/reversal.xml b/app/src/main/res/drawable/reversal.xml
new file mode 100644
index 0000000..443dc31
--- /dev/null
+++ b/app/src/main/res/drawable/reversal.xml
@@ -0,0 +1,15 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:pathData="M330.6,152.2A21.3,21.3 0,0 0,320 170.7v341.3a21.3,21.3 0,0 0,31.9 18.5l298.7,-170.7a21.3,21.3 0,0 0,0 -37l-298.7,-170.7a21.3,21.3 0,0 0,-21.3 0.1zM597,341.3L362.7,475.2V207.4L597,341.3z"
+      android:fillColor="@color/white"/>
+  <path
+      android:pathData="M362.7,362.7H85.3v-42.7h277.3v42.7zM693.4,871.8A21.3,21.3 0,0 0,704 853.3V512a21.3,21.3 0,0 0,-31.9 -18.5l-298.7,170.7a21.3,21.3 0,0 0,0 37l298.7,170.7a21.3,21.3 0,0 0,21.3 -0.1zM427,682.7L661.3,548.8v267.8L427,682.7z"
+      android:fillColor="@color/white"/>
+  <path
+      android:pathData="M661.3,661.3h277.3v42.7H661.3v-42.7z"
+      android:fillColor="@color/white"/>
+</vector>
diff --git a/app/src/main/res/drawable/rounded_background.xml b/app/src/main/res/drawable/rounded_background.xml
new file mode 100644
index 0000000..e7a81ea
--- /dev/null
+++ b/app/src/main/res/drawable/rounded_background.xml
@@ -0,0 +1,4 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#FFFFFF" />
+    <corners android:radius="15dp" />
+</shape>
diff --git a/app/src/main/res/drawable/rounded_corners.xml b/app/src/main/res/drawable/rounded_corners.xml
new file mode 100644
index 0000000..127b9d6
--- /dev/null
+++ b/app/src/main/res/drawable/rounded_corners.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#F6F6F6" />
+    <corners
+        android:topLeftRadius="40dp"
+        android:topRightRadius="40dp"
+        android:bottomLeftRadius="40dp"
+        android:bottomRightRadius="40dp" />
+</shape>
diff --git a/app/src/main/res/drawable/seek_bar_color.xml b/app/src/main/res/drawable/seek_bar_color.xml
new file mode 100644
index 0000000..f8e5913
--- /dev/null
+++ b/app/src/main/res/drawable/seek_bar_color.xml
@@ -0,0 +1,30 @@
+<!-- res/drawable/seekbar_progress_drawable.xml -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@android:id/background">
+        <shape>
+            <corners android:radius="5dp" />
+            <solid android:color="#D3D3D3" /> <!-- 背景颜色 -->
+        </shape>
+    </item>
+
+    <item android:id="@android:id/secondaryProgress">
+        <clip>
+            <shape>
+                <corners android:radius="5dp" />
+                <solid android:color="#FFD700" /> <!-- 次级进度颜色 -->
+            </shape>
+        </clip>
+    </item>
+
+    <item android:id="@android:id/progress">
+        <clip>
+            <shape>
+                <corners android:radius="5dp" />
+                <gradient
+                    android:startColor="#4891FF"
+                    android:endColor="#6CE89E"
+                    android:angle="0" />
+            </shape>
+        </clip>
+    </item>
+</layer-list>
diff --git a/app/src/main/res/drawable/seekbar_thumb.xml b/app/src/main/res/drawable/seekbar_thumb.xml
new file mode 100644
index 0000000..71213e0
--- /dev/null
+++ b/app/src/main/res/drawable/seekbar_thumb.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <solid android:color="#4C9AF7" />
+    <stroke android:color="@color/white" android:width="4dp"/>
+    <size
+        android:width="16dp"
+        android:height="16dp" />
+</shape>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/subtract.xml b/app/src/main/res/drawable/subtract.xml
new file mode 100644
index 0000000..3ae4bdb
--- /dev/null
+++ b/app/src/main/res/drawable/subtract.xml
@@ -0,0 +1,37 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="6dp"
+    android:height="2dp"
+    android:viewportWidth="6"
+    android:viewportHeight="2">
+  <path
+      android:pathData="M5.2913,0.797C5.2913,0.6815 5.1922,0.5825 5.0766,0.5825H1.0715C0.9558,0.5825 0.8568,0.6815 0.8568,0.797C0.8568,0.9125 0.9558,1.0115 1.0715,1.0115H5.0766C5.1922,1.0115 5.2913,0.9125 5.2913,0.797Z">
+    <aapt:attr name="android:fillColor">
+      <gradient 
+          android:startX="0.8568"
+          android:startY="0.797"
+          android:endX="5.2913"
+          android:endY="0.797"
+          android:type="linear">
+        <item android:offset="0" android:color="#FF8457F2"/>
+        <item android:offset="0.6" android:color="#FF7651F4"/>
+        <item android:offset="1" android:color="#FF6B4DF7"/>
+      </gradient>
+    </aapt:attr>
+  </path>
+  <path
+      android:pathData="M5.0766,1.094H1.0715C0.9063,1.094 0.7742,0.962 0.7742,0.797C0.7742,0.632 0.9063,0.5 1.0715,0.5H5.0766C5.2418,0.5 5.3739,0.632 5.3739,0.797C5.3739,0.962 5.2418,1.094 5.0766,1.094ZM1.0715,0.665C0.9971,0.665 0.9393,0.7227 0.9393,0.797C0.9393,0.8712 0.9971,0.929 1.0715,0.929H5.0766C5.1509,0.929 5.2087,0.8712 5.2087,0.797C5.2087,0.7227 5.1509,0.665 5.0766,0.665H1.0715Z">
+    <aapt:attr name="android:fillColor">
+      <gradient 
+          android:startX="0.7742"
+          android:startY="0.797"
+          android:endX="5.3739"
+          android:endY="0.797"
+          android:type="linear">
+        <item android:offset="0" android:color="#FF8457F2"/>
+        <item android:offset="0.6" android:color="#FF7651F4"/>
+        <item android:offset="1" android:color="#FF6B4DF7"/>
+      </gradient>
+    </aapt:attr>
+  </path>
+</vector>
diff --git a/app/src/main/res/drawable/un_flash.xml b/app/src/main/res/drawable/un_flash.xml
new file mode 100644
index 0000000..fe2845d
--- /dev/null
+++ b/app/src/main/res/drawable/un_flash.xml
@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:pathData="M633.6,467.2 L512,467.2l64,-352c0,-12.8 -12.8,-12.8 -19.2,-6.4L211.2,537.6c-6.4,6.4 0,19.2 6.4,19.2l121.6,0 -64,352c0,12.8 12.8,12.8 19.2,6.4L640,486.4C646.4,480 646.4,467.2 633.6,467.2z"
+      android:fillColor="@color/black"/>
+  <path
+      android:pathData="M678.4,646.4c-76.8,0 -134.4,57.6 -134.4,134.4s57.6,134.4 134.4,134.4 134.4,-57.6 134.4,-134.4S755.2,646.4 678.4,646.4zM569.6,780.8c0,-57.6 51.2,-108.8 108.8,-108.8 25.6,0 51.2,6.4 64,25.6l-153.6,153.6C576,832 569.6,806.4 569.6,780.8zM678.4,889.6c-25.6,0 -51.2,-6.4 -64,-25.6l153.6,-153.6c12.8,19.2 25.6,44.8 25.6,64C787.2,844.8 736,889.6 678.4,889.6z"
+      android:fillColor="@color/black"/>
+</vector>
diff --git a/app/src/main/res/drawable/un_like.xml b/app/src/main/res/drawable/un_like.xml
new file mode 100644
index 0000000..50d6662
--- /dev/null
+++ b/app/src/main/res/drawable/un_like.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M874.3,367.3c-42.9,0 -82.8,18.2 -110.8,49.2 -16.3,-17.9 -36.6,-31.4 -59.1,-39.7 -15.8,-94.1 -97.7,-166.1 -196.2,-166.1 -60.7,0 -117.1,27.4 -154.5,73.5 -37.4,-46.1 -93.8,-73.5 -154.5,-73.5C89.3,210.7 0,300 0,409.8c0,30.9 9,62 24.6,85.5 47.1,70.5 190.2,214.2 270.9,293.3l2.3,2.2c15.2,14.5 35,22.5 55.9,22.5 20.8,0 40.6,-8 55.8,-22.5l1.9,-1.9c41.6,-40.7 99.4,-98.3 152.2,-154.3 46,52.5 111.7,118.3 155,160.7 12.2,11.6 28,18.1 44.8,18.1 16.7,0 32.6,-6.4 46.2,-19.4 58.3,-57.1 161.2,-160.5 195.5,-211.8C1017.3,563.9 1024,540.8 1024,517 1024,434.4 956.8,367.3 874.3,367.3zM561.7,555.4c-6.8,-10.2 -10.7,-24.2 -10.7,-38.4 0,-56 45.6,-101.6 101.6,-101.6 2.1,0 4.1,0.3 6.2,0.4 -1,19.5 -6.6,38.4 -16.1,52.7 -15.7,23.5 -43.8,56.7 -76.6,92.7C564.6,559.4 562.9,557.1 561.7,555.4zM376.3,756c-12.4,11.8 -31.4,13.3 -46.7,-1.5 -64.2,-62.9 -218.6,-216.7 -264.9,-286.1 -10.5,-15.7 -16.5,-37.1 -16.5,-58.7 0,-83.3 67.8,-151 151.1,-151 55.8,0 106.9,30.7 133.3,80l21.2,39.7 21.2,-39.7c26.4,-49.4 77.4,-80 133.3,-80 68.5,0 126.5,45.9 144.9,108.5 -0.2,0 -0.3,-0 -0.4,-0 -82.5,0 -149.7,67.2 -149.7,149.7 0,23.8 6.7,46.9 18.8,65.1 3.1,4.6 6.9,9.8 11,15.2C475.6,657.9 412.5,720.6 376.3,756zM965.2,555.4c-33,49.4 -143.3,159.2 -190.2,205.1 -4,3.8 -14.5,8.1 -24.1,-1 -66.8,-65.5 -119.9,-120.8 -154.2,-160.4 36.7,-40.2 68.2,-77.3 86,-103.9 12.2,-18.2 20.1,-41 23.2,-64.7 15,9.3 27.7,22.4 36.4,38.7l21.2,39.7 21.2,-39.7c17.7,-33.2 52.1,-53.8 89.6,-53.8 56,0 101.6,45.6 101.6,101.6C975.9,531.2 972,545.2 965.2,555.4z"/>
+</vector>
diff --git a/app/src/main/res/drawable/un_reversal.xml b/app/src/main/res/drawable/un_reversal.xml
new file mode 100644
index 0000000..2aaf138
--- /dev/null
+++ b/app/src/main/res/drawable/un_reversal.xml
@@ -0,0 +1,15 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="32dp"
+    android:height="32dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:pathData="M330.6,152.2A21.3,21.3 0,0 0,320 170.7v341.3a21.3,21.3 0,0 0,31.9 18.5l298.7,-170.7a21.3,21.3 0,0 0,0 -37l-298.7,-170.7a21.3,21.3 0,0 0,-21.3 0.1zM597,341.3L362.7,475.2V207.4L597,341.3z"
+      android:fillColor="#000000"/>
+  <path
+      android:pathData="M362.7,362.7H85.3v-42.7h277.3v42.7zM693.4,871.8A21.3,21.3 0,0 0,704 853.3V512a21.3,21.3 0,0 0,-31.9 -18.5l-298.7,170.7a21.3,21.3 0,0 0,0 37l298.7,170.7a21.3,21.3 0,0 0,21.3 -0.1zM427,682.7L661.3,548.8v267.8L427,682.7z"
+      android:fillColor="#000000"/>
+  <path
+      android:pathData="M661.3,661.3h277.3v42.7H661.3v-42.7z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/app/src/main/res/drawable/work_import.xml b/app/src/main/res/drawable/work_import.xml
new file mode 100644
index 0000000..5226cfe
--- /dev/null
+++ b/app/src/main/res/drawable/work_import.xml
@@ -0,0 +1,45 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="112dp"
+    android:height="113dp"
+    android:viewportWidth="112"
+    android:viewportHeight="113">
+  <path
+      android:strokeWidth="1"
+      android:pathData="M101.5,1H11C5.48,1 1,5.48 1,11V101.75C1,107.27 5.48,111.75 11,111.75H101.5C107.02,111.75 111.5,107.27 111.5,101.75V11C111.5,5.48 107.02,1 101.5,1Z"
+      android:fillColor="#00000000"
+      android:strokeColor="#6B4DF7"/>
+  <path
+      android:pathData="M56.99,69.48C54.32,69.48 51.65,69.48 48.98,69.48C43.62,69.46 39.52,65.38 39.5,60.04C39.49,54.68 39.49,49.31 39.5,43.95C39.52,38.6 43.62,34.52 48.98,34.5C53.62,34.5 58.25,34.52 62.89,34.5C64.33,34.5 65.53,34.96 66.58,35.94C68.68,37.92 70.8,39.89 72.91,41.85C73.98,42.85 74.49,44.08 74.49,45.54C74.48,50.37 74.49,55.2 74.49,60.03C74.48,65.38 70.38,69.45 65.01,69.47C62.34,69.47 59.67,69.47 57,69.47L56.99,69.48ZM62.82,36.84C62.51,36.84 62.29,36.84 62.08,36.84C57.74,36.84 53.39,36.84 49.05,36.84C44.88,36.84 41.86,39.88 41.85,44.06C41.85,49.35 41.85,54.64 41.85,59.93C41.85,64.11 44.88,67.13 49.07,67.13C54.36,67.13 59.65,67.13 64.94,67.13C69.12,67.13 72.14,64.1 72.15,59.92C72.15,55.21 72.15,50.5 72.15,45.8V45C70.55,45 69.08,45 67.6,45C64.85,44.98 62.84,42.97 62.83,40.2C62.83,39.11 62.83,38.02 62.83,36.84H62.82ZM70.34,42.65C68.56,40.99 66.92,39.46 65.16,37.82C65.16,38.67 65.16,39.34 65.16,40.01C65.16,40.23 65.16,40.45 65.18,40.66C65.34,41.73 66.21,42.58 67.29,42.64C68.23,42.69 69.18,42.65 70.33,42.65H70.34Z">
+    <aapt:attr name="android:fillColor">
+      <gradient 
+          android:startX="39.5"
+          android:startY="51.99"
+          android:endX="74.48"
+          android:endY="51.99"
+          android:type="linear">
+        <item android:offset="0" android:color="#FF8457F2"/>
+        <item android:offset="0.6" android:color="#FF7651F4"/>
+        <item android:offset="1" android:color="#FF6B4DF7"/>
+      </gradient>
+    </aapt:attr>
+  </path>
+  <path
+      android:pathData="M58.16,50.82C59.48,50.82 60.71,50.82 61.95,50.82C62.87,50.82 63.4,51.25 63.4,51.98C63.4,52.71 62.87,53.15 61.96,53.15C60.73,53.15 59.49,53.15 58.16,53.15C58.16,54.33 58.16,55.46 58.16,56.59C58.16,56.83 58.18,57.08 58.15,57.32C58.08,57.95 57.58,58.4 56.98,58.39C56.35,58.39 55.85,57.91 55.83,57.22C55.8,56.15 55.83,55.08 55.83,54.02C55.83,53.76 55.83,53.5 55.83,53.16C54.54,53.16 53.31,53.16 52.08,53.16C51.12,53.16 50.57,52.71 50.59,51.96C50.61,51.23 51.13,50.83 52.07,50.83C53.28,50.83 54.5,50.83 55.83,50.83C55.83,49.85 55.83,48.89 55.83,47.93C55.83,47.54 55.81,47.15 55.83,46.76C55.87,46.06 56.33,45.59 56.97,45.58C57.63,45.57 58.14,46.06 58.15,46.79C58.17,48.1 58.15,49.41 58.15,50.82H58.16Z">
+    <aapt:attr name="android:fillColor">
+      <gradient 
+          android:startX="50.58"
+          android:startY="51.99"
+          android:endX="63.4"
+          android:endY="51.99"
+          android:type="linear">
+        <item android:offset="0" android:color="#FF8457F2"/>
+        <item android:offset="0.6" android:color="#FF7651F4"/>
+        <item android:offset="1" android:color="#FF6B4DF7"/>
+      </gradient>
+    </aapt:attr>
+  </path>
+  <path
+      android:pathData="M44.07,76.77H45.39V82.51C45.39,83.12 45.25,83.66 44.96,84.14C44.67,84.61 44.27,84.97 43.75,85.24C43.23,85.51 42.62,85.64 41.92,85.64C41.23,85.64 40.62,85.51 40.1,85.24C39.58,84.97 39.18,84.61 38.89,84.14C38.6,83.66 38.46,83.12 38.46,82.51V76.77H39.78V82.41C39.78,82.8 39.86,83.15 40.04,83.46C40.21,83.77 40.46,84.01 40.78,84.18C41.1,84.36 41.48,84.44 41.92,84.44C42.37,84.44 42.75,84.36 43.07,84.18C43.39,84.01 43.64,83.77 43.81,83.46C43.98,83.15 44.07,82.8 44.07,82.41V76.77ZM47.2,87.95V78.95H48.45V80.02H48.56C48.63,79.88 48.74,79.72 48.87,79.54C49.01,79.36 49.21,79.21 49.45,79.07C49.7,78.94 50.03,78.87 50.43,78.87C50.96,78.87 51.43,79 51.85,79.27C52.26,79.54 52.59,79.92 52.82,80.42C53.06,80.93 53.18,81.53 53.18,82.24C53.18,82.95 53.06,83.55 52.83,84.06C52.59,84.56 52.27,84.95 51.86,85.22C51.45,85.49 50.98,85.63 50.45,85.63C50.05,85.63 49.72,85.56 49.47,85.43C49.22,85.29 49.03,85.14 48.88,84.96C48.74,84.78 48.63,84.62 48.56,84.48H48.48V87.95H47.2ZM48.45,82.23C48.45,82.69 48.52,83.09 48.65,83.44C48.79,83.78 48.98,84.06 49.23,84.25C49.49,84.44 49.8,84.54 50.16,84.54C50.54,84.54 50.86,84.44 51.12,84.24C51.37,84.03 51.56,83.76 51.7,83.41C51.83,83.06 51.9,82.66 51.9,82.23C51.9,81.8 51.83,81.41 51.7,81.06C51.57,80.72 51.38,80.45 51.12,80.25C50.86,80.05 50.55,79.95 50.16,79.95C49.79,79.95 49.48,80.05 49.22,80.24C48.97,80.43 48.78,80.69 48.65,81.03C48.52,81.38 48.45,81.77 48.45,82.23ZM55.88,76.77V85.5H54.61V76.77H55.88ZM60.36,85.63C59.74,85.63 59.21,85.49 58.75,85.21C58.29,84.93 57.94,84.54 57.68,84.03C57.43,83.52 57.3,82.93 57.3,82.26C57.3,81.58 57.43,80.98 57.68,80.48C57.94,79.97 58.29,79.57 58.75,79.29C59.21,79.01 59.74,78.87 60.36,78.87C60.97,78.87 61.51,79.01 61.96,79.29C62.42,79.57 62.77,79.97 63.03,80.48C63.28,80.98 63.41,81.58 63.41,82.26C63.41,82.93 63.28,83.52 63.03,84.03C62.77,84.54 62.42,84.93 61.96,85.21C61.51,85.49 60.97,85.63 60.36,85.63ZM60.36,84.56C60.76,84.56 61.09,84.46 61.35,84.25C61.61,84.04 61.8,83.76 61.93,83.41C62.06,83.06 62.12,82.67 62.12,82.25C62.12,81.84 62.06,81.45 61.93,81.1C61.8,80.75 61.61,80.47 61.35,80.25C61.09,80.04 60.76,79.93 60.36,79.93C59.96,79.93 59.63,80.04 59.36,80.25C59.1,80.47 58.91,80.75 58.78,81.1C58.65,81.45 58.59,81.84 58.59,82.25C58.59,82.67 58.65,83.06 58.78,83.41C58.91,83.76 59.1,84.04 59.36,84.25C59.63,84.46 59.96,84.56 60.36,84.56ZM66.73,85.64C66.32,85.64 65.94,85.57 65.61,85.41C65.27,85.26 65.01,85.03 64.81,84.74C64.62,84.44 64.52,84.08 64.52,83.65C64.52,83.28 64.59,82.98 64.74,82.74C64.88,82.5 65.07,82.31 65.31,82.17C65.55,82.03 65.82,81.93 66.12,81.86C66.42,81.79 66.72,81.73 67.03,81.69C67.42,81.65 67.74,81.61 67.99,81.58C68.23,81.55 68.41,81.5 68.52,81.43C68.63,81.37 68.69,81.26 68.69,81.1V81.07C68.69,80.7 68.58,80.41 68.37,80.21C68.16,80 67.85,79.9 67.44,79.9C67.01,79.9 66.67,80 66.43,80.19C66.18,80.37 66.01,80.58 65.92,80.81L64.72,80.54C64.86,80.14 65.07,79.82 65.34,79.58C65.62,79.33 65.94,79.15 66.3,79.04C66.65,78.93 67.03,78.87 67.42,78.87C67.69,78.87 67.96,78.9 68.26,78.96C68.55,79.02 68.83,79.13 69.08,79.3C69.34,79.46 69.55,79.69 69.72,79.99C69.88,80.29 69.96,80.68 69.96,81.15V85.5H68.72V84.61H68.67C68.59,84.77 68.46,84.93 68.3,85.09C68.13,85.25 67.92,85.38 67.66,85.49C67.4,85.59 67.09,85.64 66.73,85.64ZM67.01,84.62C67.36,84.62 67.66,84.55 67.91,84.41C68.17,84.27 68.36,84.09 68.49,83.87C68.62,83.64 68.69,83.4 68.69,83.14V82.3C68.64,82.34 68.56,82.38 68.43,82.42C68.3,82.46 68.15,82.49 67.99,82.52C67.82,82.55 67.66,82.57 67.51,82.59C67.35,82.61 67.22,82.63 67.11,82.64C66.87,82.68 66.64,82.73 66.44,82.8C66.23,82.88 66.07,82.98 65.95,83.12C65.83,83.26 65.77,83.44 65.77,83.67C65.77,83.98 65.89,84.22 66.12,84.38C66.35,84.54 66.65,84.62 67.01,84.62ZM74.11,85.63C73.58,85.63 73.11,85.49 72.7,85.22C72.28,84.95 71.96,84.56 71.73,84.06C71.49,83.55 71.38,82.95 71.38,82.24C71.38,81.53 71.49,80.93 71.73,80.42C71.97,79.92 72.29,79.54 72.71,79.27C73.12,79 73.59,78.87 74.12,78.87C74.53,78.87 74.85,78.94 75.1,79.07C75.35,79.21 75.54,79.36 75.68,79.54C75.82,79.72 75.93,79.88 76,80.02H76.08V76.77H77.35V85.5H76.11V84.48H76C75.93,84.62 75.82,84.78 75.67,84.96C75.53,85.14 75.33,85.29 75.08,85.43C74.83,85.56 74.51,85.63 74.11,85.63ZM74.39,84.54C74.76,84.54 75.07,84.44 75.32,84.25C75.58,84.06 75.77,83.78 75.9,83.44C76.03,83.09 76.1,82.69 76.1,82.23C76.1,81.77 76.04,81.38 75.91,81.03C75.77,80.69 75.58,80.43 75.33,80.24C75.08,80.05 74.76,79.95 74.39,79.95C74.01,79.95 73.69,80.05 73.43,80.25C73.18,80.45 72.99,80.72 72.85,81.06C72.73,81.41 72.66,81.8 72.66,82.23C72.66,82.66 72.73,83.06 72.86,83.41C72.99,83.76 73.18,84.03 73.44,84.24C73.7,84.44 74.01,84.54 74.39,84.54Z"
+      android:fillColor="#C7C7C7"/>
+</vector>
diff --git a/app/src/main/res/layout/activity_board.xml b/app/src/main/res/layout/activity_board.xml
new file mode 100644
index 0000000..2f1bff2
--- /dev/null
+++ b/app/src/main/res/layout/activity_board.xml
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/background_dark"
+    tools:context=".ui.activity.BoardActivity">
+
+    <androidx.camera.view.PreviewView
+        android:id="@+id/preview"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.appcompat.widget.AppCompatImageView
+        android:id="@+id/image_full"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:scaleType="matrix"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <ImageView
+        android:id="@+id/back"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="24dp"
+        android:layout_marginTop="32dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:src="@drawable/back"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/bottom_toolbar"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="24dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <ImageView
+            android:id="@+id/light"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginEnd="24dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:contentDescription="Flash"
+            android:padding="8dp"
+            android:src="@drawable/un_flash"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@id/play"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <ImageView
+            android:id="@+id/play"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:contentDescription="Capture"
+            android:src="@drawable/camera"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <ImageView
+            android:id="@+id/import_image"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="24dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:contentDescription="Gallery"
+            android:padding="8dp"
+            android:src="@drawable/photo"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@id/play"
+            app:layout_constraintTop_toTopOf="parent" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <ImageView
+        android:id="@+id/reversal"
+        android:layout_width="40dp"
+        android:layout_height="40dp"
+        android:layout_marginTop="32dp"
+        android:layout_marginEnd="24dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:contentDescription="Reverse"
+        android:src="@drawable/un_reversal"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <FrameLayout
+        android:id="@+id/seek_bar_background"
+        android:layout_width="280dp"
+        android:layout_height="33dp"
+        android:layout_marginBottom="32dp"
+        android:background="@drawable/rounded_background"
+        android:padding="10dp"
+        app:layout_constraintBottom_toTopOf="@+id/bottom_toolbar"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <ImageView
+            android:id="@+id/start_icon"
+            android:layout_width="10dp"
+            android:layout_height="10dp"
+            android:layout_gravity="start|center_vertical"
+            android:src="@drawable/subtract" />
+
+        <SeekBar
+            android:id="@+id/seekbar"
+            style="?android:attr/progressBarStyleHorizontal"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical"
+            android:max="100"
+            android:maxHeight="5dp"
+            android:progress="0"
+            android:progressDrawable="@drawable/seek_bar_color"
+            android:thumb="@drawable/seekbar_thumb" />
+
+        <ImageView
+            android:id="@+id/end_icon"
+            android:layout_width="10dp"
+            android:layout_height="10dp"
+            android:layout_gravity="end|center_vertical"
+            android:src="@drawable/add" />
+
+    </FrameLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/layout/activity_category.xml b/app/src/main/res/layout/activity_category.xml
new file mode 100644
index 0000000..f6a44a7
--- /dev/null
+++ b/app/src/main/res/layout/activity_category.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@mipmap/background"
+    tools:context=".ui.activity.CategoryActivity">
+
+    <ImageView
+        android:id="@+id/back"
+        android:layout_width="32dp"
+        android:layout_height="32dp"
+        android:layout_marginStart="24dp"
+        android:layout_marginTop="32dp"
+        android:src="@drawable/back"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/app_name"
+        android:textColor="@color/black"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="@+id/back"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/back" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerview"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_marginTop="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/title" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 86a5d97..fd0f822 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -5,15 +5,24 @@
     android:id="@+id/main"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    android:background="@mipmap/background"
+    tools:context=".ui.activity.MainActivity">
 
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
+    <androidx.viewpager2.widget.ViewPager2
+        android:id="@+id/main_viewpager"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_marginTop="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/main_tablayout"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <com.google.android.material.tabs.TabLayout
+        android:id="@+id/main_tablayout"
+        android:layout_width="match_parent"
+        android:layout_height="88dp"
+        android:background="@android:color/transparent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:tabIndicatorHeight="0dp"
+        app:tabRippleColor="@android:color/transparent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_splash.xml b/app/src/main/res/layout/activity_splash.xml
new file mode 100644
index 0000000..a6fc9e7
--- /dev/null
+++ b/app/src/main/res/layout/activity_splash.xml
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@mipmap/background"
+    tools:context=".ui.activity.SplashActivity">
+
+    <ImageView
+        android:id="@+id/splash_image"
+        android:layout_width="150dp"
+        android:layout_height="150dp"
+        android:src="@mipmap/placeholder"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.498"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.38" />
+
+    <TextView
+        android:id="@+id/splash_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="24dp"
+        android:text="@string/app_name"
+        android:textSize="25sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/splash_image" />
+
+    <ProgressBar
+        android:id="@+id/progress_bar"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_width="0dp"
+        android:layout_height="5dp"
+        android:layout_marginStart="53dp"
+        android:layout_marginEnd="53dp"
+        android:layout_marginBottom="80dp"
+        android:max="100"
+        android:progress="0"
+        android:progressDrawable="@drawable/seek_bar_color"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_category.xml b/app/src/main/res/layout/fragment_category.xml
new file mode 100644
index 0000000..dc715e5
--- /dev/null
+++ b/app/src/main/res/layout/fragment_category.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:activity=".fragment.CategoryFragment">
+
+    <TextView
+        android:id="@+id/title"
+        android:layout_width="wrap_content"
+        android:layout_height="32dp"
+        android:layout_marginTop="20dp"
+        android:layout_marginBottom="20dp"
+        android:gravity="center"
+        android:text="@string/app_name"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerview"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_below="@+id/title"
+        android:layout_marginTop="20dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/title" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_favorite.xml b/app/src/main/res/layout/fragment_favorite.xml
new file mode 100644
index 0000000..255c4ff
--- /dev/null
+++ b/app/src/main/res/layout/fragment_favorite.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:activity=".fragment.FavoriteFragment">
+
+    <TextView
+        android:id="@+id/title"
+        android:layout_width="wrap_content"
+        android:layout_height="32dp"
+        android:layout_marginTop="20dp"
+        android:layout_marginBottom="20dp"
+        android:gravity="center"
+        android:text="FAVORITE"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <TextView
+        android:id="@+id/background_text"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="30dp"
+        android:gravity="center"
+        android:text="You have not yet included any favorite photos in the folder"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerview"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_below="@+id/title"
+        android:layout_marginTop="20dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/title" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_import.xml b/app/src/main/res/layout/fragment_import.xml
new file mode 100644
index 0000000..b3f70d2
--- /dev/null
+++ b/app/src/main/res/layout/fragment_import.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:activity=".fragment.ImportFragment">
+
+    <TextView
+        android:id="@+id/title"
+        android:layout_width="wrap_content"
+        android:layout_height="32dp"
+        android:layout_marginTop="20dp"
+        android:layout_marginBottom="20dp"
+        android:gravity="center"
+        android:text="IMPORT"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerview"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_below="@+id/title"
+        android:layout_marginTop="20dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/title" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/item_category.xml b/app/src/main/res/layout/item_category.xml
new file mode 100644
index 0000000..ecaa647
--- /dev/null
+++ b/app/src/main/res/layout/item_category.xml
@@ -0,0 +1,42 @@
+<com.google.android.material.card.MaterialCardView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_margin="8dp"
+    app:cardCornerRadius="12dp"
+    app:cardBackgroundColor="#CCEAE7"
+    app:cardElevation="4dp">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="8dp">
+
+        <ImageView
+            android:id="@+id/item_imageview"
+            android:layout_width="0dp"
+            android:layout_height="160dp"
+            android:scaleType="centerCrop"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent" />
+
+        <TextView
+            android:id="@+id/item_textview"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:text="示例标题"
+            android:gravity="center"
+            android:textColor="@color/black"
+            android:textSize="16sp"
+            android:textStyle="bold"
+            app:layout_constraintTop_toBottomOf="@id/item_imageview"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</com.google.android.material.card.MaterialCardView>
diff --git a/app/src/main/res/layout/item_import.xml b/app/src/main/res/layout/item_import.xml
new file mode 100644
index 0000000..9a26d37
--- /dev/null
+++ b/app/src/main/res/layout/item_import.xml
@@ -0,0 +1,34 @@
+<com.google.android.material.card.MaterialCardView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_margin="8dp"
+    app:cardCornerRadius="12dp"
+    app:cardElevation="4dp">
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="126dp">
+
+        <ImageView
+            android:id="@+id/image_view"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:scaleType="centerCrop"
+            android:contentDescription="图片展示"/>
+
+        <ImageView
+            android:id="@+id/btn_favorite"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:layout_alignParentTop="true"
+            android:layout_alignParentEnd="true"
+            android:layout_margin="8dp"
+            android:padding="4dp"
+            android:background="@drawable/btn_fav_bg"
+            android:src="@drawable/un_like"
+            android:contentDescription="收藏按钮"
+            android:alpha="0.9" />
+    </RelativeLayout>
+</com.google.android.material.card.MaterialCardView>
diff --git a/app/src/main/res/layout/item_special_view.xml b/app/src/main/res/layout/item_special_view.xml
new file mode 100644
index 0000000..c2e3a1f
--- /dev/null
+++ b/app/src/main/res/layout/item_special_view.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="126dp">
+
+    <ImageView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:src="@drawable/work_import" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/main_tab_item_custom.xml b/app/src/main/res/layout/main_tab_item_custom.xml
new file mode 100644
index 0000000..fa88963
--- /dev/null
+++ b/app/src/main/res/layout/main_tab_item_custom.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <ImageView
+        android:id="@+id/icon_custom"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"/>
+
+    <View
+        android:id="@+id/dot_view"
+        android:layout_width="8dp"
+        android:layout_height="8dp"
+        android:layout_marginTop="8dp"
+        android:background="@drawable/dot"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="@+id/icon_custom"
+        app:layout_constraintStart_toStartOf="@+id/icon_custom"
+        app:layout_constraintTop_toBottomOf="@+id/icon_custom" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
deleted file mode 100644
index 6f3b755..0000000
--- a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
-    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
-</adaptive-icon>
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-hdpi/background.png b/app/src/main/res/mipmap-hdpi/background.png
new file mode 100644
index 0000000..900881f
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/background.png differ
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher.png b/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..96a0e40
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher.webp b/app/src/main/res/mipmap-hdpi/ic_launcher.webp
deleted file mode 100644
index c209e78..0000000
Binary files a/app/src/main/res/mipmap-hdpi/ic_launcher.webp and /dev/null differ
diff --git a/app/src/main/res/mipmap-hdpi/placeholder.png b/app/src/main/res/mipmap-hdpi/placeholder.png
new file mode 100644
index 0000000..30f37db
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/placeholder.png differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher.png b/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..5affa51
Binary files /dev/null and b/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher.webp b/app/src/main/res/mipmap-mdpi/ic_launcher.webp
deleted file mode 100644
index 4f0f1d6..0000000
Binary files a/app/src/main/res/mipmap-mdpi/ic_launcher.webp and /dev/null differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..712badc
Binary files /dev/null and b/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher.webp b/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
deleted file mode 100644
index 948a307..0000000
Binary files a/app/src/main/res/mipmap-xhdpi/ic_launcher.webp and /dev/null differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..ab5c626
Binary files /dev/null and b/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp b/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
deleted file mode 100644
index 28d4b77..0000000
Binary files a/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp and /dev/null differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..09fd4c7
Binary files /dev/null and b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
deleted file mode 100644
index aa7d642..0000000
Binary files a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp and /dev/null differ
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index c8524cd..a3bde4c 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -2,4 +2,6 @@
 <resources>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="background_dark">#212121</color>
+    <color name="primary">#6200EE</color>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 0141aed..e3cdd8a 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,5 @@
 <resources>
     <string name="app_name">AR Drawing Board</string>
+    <!-- TODO: Remove or change this placeholder text -->
+    <string name="hello_blank_fragment">Hello blank fragment</string>
 </resources>
\ No newline at end of file
diff --git a/keystore.properties b/keystore.properties
new file mode 100644
index 0000000..8383fa1
--- /dev/null
+++ b/keystore.properties
@@ -0,0 +1,6 @@
+app_name=AR Drawing Board
+package_name=com.ar.ardrawingboard
+keystoreFile=app/ARDrawingBoard.jks
+key_alias=ARDrawingBoardkey0
+key_store_password=ARDrawingBoard
+key_password=ARDrawingBoard