显示pdf

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

app/build.gradle.kts

@@ -1,7 +1,10 @@
+import org.gradle.kotlin.dsl.implementation
+
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.android)
     alias(libs.plugins.devtools.ksp)
+    id("kotlin-parcelize")
 }
 
 android {
@@ -54,4 +57,7 @@ dependencies {
     implementation(libs.androidx.room.runtime)
     ksp(libs.androidx.room.compiler)
     implementation(libs.androidx.room.ktx)
+    implementation(libs.glide)
+    implementation(libs.androidpdfviewer)
+    implementation(libs.pdfbox.android)
 }

app/proguard-rules.pro

@@ -19,3 +19,5 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-keep class com.shockwave.**

app/src/main/AndroidManifest.xml

@@ -11,7 +11,8 @@
     <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
 
     <!-- 读取所有文件权限（Android 11+ 需要特殊处理） -->
-    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
+    <uses-permission
+        android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
         tools:ignore="ScopedStorage" />
 
     <application
@@ -21,10 +22,10 @@
         android:fullBackupContent="@xml/backup_rules"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
+        android:requestLegacyExternalStorage="true"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.PDFReaderPro"
-        android:requestLegacyExternalStorage="true"
         tools:targetApi="36">
 
         <activity
@@ -42,13 +43,20 @@
             android:name=".ui.act.MainActivity"
             android:exported="true"
             android:label="@string/app_name"
-            android:theme="@style/Theme.PDFReaderPro">
+            android:theme="@style/Theme.PDFReaderPro" />
 
+        <activity
+            android:name=".ui.act.PdfViewActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.PDFReaderPro">
             <!-- 处理PDF文件打开 -->
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
+
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.BROWSABLE" />
+
                 <data android:mimeType="application/pdf" />
                 <data android:scheme="file" />
                 <data android:scheme="content" />

app/src/main/java/com/all/pdfreader/pro/app/room/entity/PdfDocumentEntity.kt

@@ -1,8 +1,11 @@
 package com.all.pdfreader.pro.app.room.entity
 
+import android.os.Parcelable
 import androidx.room.Entity
 import androidx.room.PrimaryKey
+import kotlinx.parcelize.Parcelize
 
+@Parcelize
 @Entity(tableName = "pdf_documents")
 data class PdfDocumentEntity(
     @PrimaryKey
@@ -28,4 +31,4 @@ data class PdfDocumentEntity(
     val metadataKeywords: String? = null, // PDF元数据关键词
     val metadataCreationDate: Long? = null, // PDF创建时间
     val metadataModificationDate: Long? = null // PDF修改时间
-)
+): Parcelable

app/src/main/java/com/all/pdfreader/pro/app/ui/act/BaseActivity.kt

@@ -4,11 +4,13 @@ import android.app.Activity
 import android.os.Build
 import android.os.Bundle
 import android.util.Log
+import android.widget.Toast
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
 import com.all.pdfreader.pro.app.room.repository.PdfRepository
 import com.all.pdfreader.pro.app.sp.AppStore
 import com.all.pdfreader.pro.app.util.StoragePermissionHelper
+import com.tom_roush.pdfbox.contentstream.operator.text.ShowText
 
 abstract class BaseActivity : AppCompatActivity() {
 
@@ -60,6 +62,10 @@ abstract class BaseActivity : AppCompatActivity() {
         Log.w("ocean", "$TAG: $message")
     }
 
+    protected fun showToast(message: String) {
+        Toast.makeText(this, message, Toast.LENGTH_SHORT).show()
+    }
+
     //获取数据库实例
     protected fun getRepository(): PdfRepository {
         return PdfRepository.getInstance()

app/src/main/java/com/all/pdfreader/pro/app/ui/act/PdfViewActivity.kt

@@ -0,0 +1,100 @@
+package com.all.pdfreader.pro.app.ui.act
+
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import android.os.Bundle
+import androidx.lifecycle.lifecycleScope
+import com.all.pdfreader.pro.app.R
+import com.all.pdfreader.pro.app.databinding.ActivityPdfViewBinding
+import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
+import com.github.barteksc.pdfviewer.listener.OnErrorListener
+import com.github.barteksc.pdfviewer.listener.OnLoadCompleteListener
+import com.github.barteksc.pdfviewer.listener.OnPageChangeListener
+import kotlinx.coroutines.launch
+import java.io.File
+
+class PdfViewActivity : BaseActivity(), OnLoadCompleteListener, OnPageChangeListener,
+    OnErrorListener {
+    override val TAG: String = "PdfViewActivity"
+
+    private lateinit var binding: ActivityPdfViewBinding
+    private lateinit var pdfDocument: PdfDocumentEntity
+    private val pdfRepository = getRepository()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityPdfViewBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        // 获取传递的PDF文档数据
+        pdfDocument = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            intent.getParcelableExtra(EXTRA_PDF_DOCUMENT, PdfDocumentEntity::class.java)
+        } else {
+            @Suppress("DEPRECATION") intent.getParcelableExtra<PdfDocumentEntity>(EXTRA_PDF_DOCUMENT)
+        } ?: throw IllegalArgumentException("PDF document data is required")
+
+        loadPdf()
+    }
+
+    private fun loadPdf() {
+        // 使用传递的文件路径加载PDF
+        val file = File(pdfDocument.filePath)
+        if (file.exists()) {
+            binding.pdfview
+                .fromFile(file)
+                .defaultPage(pdfDocument.lastReadPage) // 从上次阅读页码开始
+                .enableDoubletap(true)// 是否允许双击缩放
+                .onLoad(this)
+                .enableAnnotationRendering(true)  // 是否渲染注释（如评论、颜色、表单等）
+                .onError(this)
+                .onPageChange(this)
+                .load()
+        } else {
+            showToast(getString(R.string.file_not) + ": ${pdfDocument.fileName}")
+            finish()
+        }
+    }
+
+    //PDF 文档加载完成时回调
+    override fun loadComplete(nbPages: Int) {
+
+    }
+
+    //PDF 加载出错时回调
+    override fun onError(t: Throwable?) {
+
+    }
+
+    //页面切换时回调
+    override fun onPageChanged(page: Int, pageCount: Int) {
+        // 保存阅读进度
+        pdfDocument = pdfDocument.copy(
+            lastReadPage = page, readingProgress = (page.toFloat() / pageCount.toFloat()) * 100
+        )
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        saveReadingProgress()
+    }
+
+    private fun saveReadingProgress() {
+        lifecycleScope.launch {
+            pdfRepository.updateReadingProgress(
+                pdfDocument.fileHash, pdfDocument.lastReadPage, pdfDocument.readingProgress
+            )
+        }
+    }
+
+    companion object {
+        private const val EXTRA_PDF_DOCUMENT = "extra_pdf_document"
+
+        // 创建启动Intent的便捷方法
+        fun createIntent(context: Context, pdfDocument: PdfDocumentEntity): Intent {
+            return Intent(context, PdfViewActivity::class.java).apply {
+                putExtra(EXTRA_PDF_DOCUMENT, pdfDocument)
+            }
+        }
+    }
+}

app/src/main/java/com/all/pdfreader/pro/app/ui/adapter/PdfAdapter.kt

@@ -6,8 +6,12 @@ import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
 import com.all.pdfreader.pro.app.databinding.AdapterPdfItemBinding
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
+import com.all.pdfreader.pro.app.util.AppUtils.dpToPx
 import com.all.pdfreader.pro.app.util.FileUtils.toFormatFileSize
 import com.all.pdfreader.pro.app.util.FileUtils.toSlashDate
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.resource.bitmap.CenterCrop
+import com.bumptech.glide.load.resource.bitmap.RoundedCorners
 
 class PdfAdapter(
     private var pdfList: MutableList<PdfDocumentEntity>,
@@ -30,6 +34,9 @@ class PdfAdapter(
         holder.binding.tvFileName.text = item.fileName
         holder.binding.tvFileSize.text = item.fileSize.toFormatFileSize()
         holder.binding.tvFileDate.text = item.lastModified.toSlashDate()
+        Glide.with(holder.binding.root).load(item.thumbnailPath)
+            .transform(CenterCrop(), RoundedCorners(8.dpToPx(holder.binding.root.context)))
+            .into(holder.binding.tvFileImg)
 
         holder.binding.root.setOnClickListener {
             onItemClick(item)

app/src/main/java/com/all/pdfreader/pro/app/ui/fragment/HomeFrag.kt

@@ -14,6 +14,7 @@ import com.all.pdfreader.pro.app.model.SortConfig
 import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
 import com.all.pdfreader.pro.app.room.repository.PdfRepository
 import com.all.pdfreader.pro.app.ui.act.MainActivity
+import com.all.pdfreader.pro.app.ui.act.PdfViewActivity
 import com.all.pdfreader.pro.app.ui.adapter.PdfAdapter
 import com.all.pdfreader.pro.app.util.PdfScanner
 import kotlinx.coroutines.launch
@@ -37,7 +38,9 @@ class HomeFrag : BaseFrag(), MainActivity.SortableFragment {
 
     private fun initView() {
         adapter = PdfAdapter(pdfList = mutableListOf(), onItemClick = { pdf ->
-            Toast.makeText(requireContext(), "点击: ${pdf.fileName}", Toast.LENGTH_SHORT).show()
+            val intent = PdfViewActivity.createIntent(requireContext(), pdf)
+            startActivity(intent)
+
         }, onMoreClick = { pdf ->
             Toast.makeText(requireContext(), "更多操作: ${pdf.fileName}", Toast.LENGTH_SHORT).show()
         })

app/src/main/java/com/all/pdfreader/pro/app/util/AppUtils.kt

@@ -1,5 +1,6 @@
 package com.all.pdfreader.pro.app.util
 
+import android.content.Context
 import android.view.View
 
 object AppUtils {
@@ -36,4 +37,9 @@ object AppUtils {
                 .start()
         }
     }
+
+    fun Int.dpToPx(context: Context): Int {
+        return (this * context.resources.displayMetrics.density).toInt()
+    }
+
 }

app/src/main/java/com/all/pdfreader/pro/app/util/FileUtils.kt

@@ -3,29 +3,17 @@ package com.all.pdfreader.pro.app.util
 import android.annotation.SuppressLint
 import android.content.Context
 import android.net.Uri
-import android.os.Build
 import android.provider.MediaStore
 import android.provider.OpenableColumns
 import android.util.Log
-import android.webkit.MimeTypeMap
-import androidx.annotation.RequiresApi
 import java.io.File
 import java.io.InputStream
 import java.security.MessageDigest
-import com.all.pdfreader.pro.app.util.StoragePermissionHelper
 import java.text.SimpleDateFormat
-import java.time.Instant
-import java.time.ZoneId
-import java.time.format.DateTimeFormatter
 import java.util.Date
 import java.util.Locale
 
 object FileUtils {
-
-    private val PDF_MIME_TYPES = setOf(
-        "application/pdf", "application/x-pdf"
-    )
-
     fun scanPdfFiles(context: Context): List<File> {
         val pdfFiles = mutableListOf<File>()
 

app/src/main/java/com/all/pdfreader/pro/app/util/PdfScanner.kt

@@ -2,6 +2,8 @@ package com.all.pdfreader.pro.app.util
 
 import android.content.Context
 import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.Color
 import android.graphics.pdf.PdfRenderer
 import android.os.ParcelFileDescriptor
 import android.util.Log
@@ -13,6 +15,8 @@ import java.io.File
 import java.io.FileOutputStream
 import java.util.concurrent.TimeUnit
 import androidx.core.graphics.createBitmap
+import com.github.barteksc.pdfviewer.PDFView
+import java.util.concurrent.CountDownLatch
 
 class PdfScanner(
     private val context: Context,
@@ -32,16 +36,28 @@ class PdfScanner(
 
                 // 扫描应用私有目录（无需权限）
                 val privateFiles = FileUtils.scanPdfFiles(context)
-                LogUtil.logDebug("ocean", "PdfScanner: 📁 应用私有目录找到: ${privateFiles.size} 个PDF文件")
+                LogUtil.logDebug(
+                    "ocean",
+                    "PdfScanner: 📁 应用私有目录找到: ${privateFiles.size} 个PDF文件"
+                )
                 privateFiles.forEach { file ->
-                    LogUtil.logDebug("ocean", "PdfScanner:    📄 ${file.name} (${FileUtils.formatFileSize(file.length())})")
+                    LogUtil.logDebug(
+                        "ocean",
+                        "PdfScanner:    📄 ${file.name} (${FileUtils.formatFileSize(file.length())})"
+                    )
                 }
 
                 // 扫描MediaStore（需要权限）
                 val mediaStoreFiles = FileUtils.scanPdfFilesFromMediaStore(context)
-                LogUtil.logDebug("ocean", "PdfScanner: 📱 MediaStore找到: ${mediaStoreFiles.size} 个PDF文件")
+                LogUtil.logDebug(
+                    "ocean",
+                    "PdfScanner: 📱 MediaStore找到: ${mediaStoreFiles.size} 个PDF文件"
+                )
                 mediaStoreFiles.forEach { file ->
-                    LogUtil.logDebug("ocean", "PdfScanner:    📱 ${file.name} (${FileUtils.formatFileSize(file.length())})")
+                    LogUtil.logDebug(
+                        "ocean",
+                        "PdfScanner:    📱 ${file.name} (${FileUtils.formatFileSize(file.length())})"
+                    )
                 }
 
                 // 合并并去重
@@ -50,7 +66,10 @@ class PdfScanner(
 
                 // 处理每个PDF文件
                 allFiles.forEachIndexed { index, file ->
-                    LogUtil.logDebug("ocean", "PdfScanner: 🔄 处理文件 ${index + 1}/${allFiles.size}: ${file.name}")
+                    LogUtil.logDebug(
+                        "ocean",
+                        "PdfScanner: 🔄 处理文件 ${index + 1}/${allFiles.size}: ${file.name}"
+                    )
 
                     if (FileUtils.isPdfFile(file)) {
                         val fileHash = FileUtils.calculateFileHash(file.absolutePath)
@@ -60,7 +79,10 @@ class PdfScanner(
                             val existingDoc = pdfRepository.getDocumentByHash(fileHash)
 
                             if (existingDoc == null) {
-                                LogUtil.logDebug("ocean", "PdfScanner:    🆕 发现新PDF文件: ${file.name}")
+                                LogUtil.logDebug(
+                                    "ocean",
+                                    "PdfScanner:    🆕 发现新PDF文件: ${file.name}"
+                                )
                                 val thumbnailPath = generateThumbnail(context, file)
 
                                 val metadata =
@@ -81,11 +103,20 @@ class PdfScanner(
                                     metadataModificationDate = metadata?.modificationDate?.time
                                 )
                                 pdfRepository.insertOrUpdateDocument(document)
-                                LogUtil.logDebug("ocean", "PdfScanner:    ✅ 已保存到数据库: ${file.name}")
+                                LogUtil.logDebug(
+                                    "ocean",
+                                    "PdfScanner:    ✅ 已保存到数据库: ${file.name}"
+                                )
                             } else {
-                                LogUtil.logDebug("ocean", "PdfScanner:    📋 文件已存在: ${file.name}")
+                                LogUtil.logDebug(
+                                    "ocean",
+                                    "PdfScanner:    📋 文件已存在: ${file.name}"
+                                )
                                 if (existingDoc.filePath != file.absolutePath) {
-                                    LogUtil.logDebug("ocean", "PdfScanner:    🔄 更新文件路径: ${existingDoc.filePath} -> ${file.absolutePath}")
+                                    LogUtil.logDebug(
+                                        "ocean",
+                                        "PdfScanner:    🔄 更新文件路径: ${existingDoc.filePath} -> ${file.absolutePath}"
+                                    )
                                     val updatedDoc = existingDoc.copy(
                                         filePath = file.absolutePath,
                                         lastModified = file.lastModified()
@@ -103,14 +134,21 @@ class PdfScanner(
                     docs.forEach { doc ->
                         LogUtil.logDebug(
                             "ocean",
-                            "PdfScanner:    📖 ${doc.fileName} - ${doc.pageCount}页 - ${FileUtils.formatFileSize(doc.fileSize)} - ${doc.thumbnailPath}"
+                            "PdfScanner:    📖 ${doc.fileName} - ${doc.pageCount}页 - ${
+                                FileUtils.formatFileSize(
+                                    doc.fileSize
+                                )
+                            } - ${doc.thumbnailPath}"
                         )
                     }
 
                     // 标记扫描完成
                     ScanManager.markScanComplete(context)
                     val lastScanTime = ScanManager.getLastScanTime(context)
-                    LogUtil.logDebug("ocean", "PdfScanner: ✅ 扫描完成，记录时间: ${java.util.Date(lastScanTime)}")
+                    LogUtil.logDebug(
+                        "ocean",
+                        "PdfScanner: ✅ 扫描完成，记录时间: ${java.util.Date(lastScanTime)}"
+                    )
                     callback.invoke(true)
                 }
 
@@ -137,12 +175,17 @@ class PdfScanner(
 
     private fun generateThumbnail(context: Context, pdfFile: File): String? {
         return try {
-            val fileDescriptor = ParcelFileDescriptor.open(pdfFile, ParcelFileDescriptor.MODE_READ_ONLY)
+            val fileDescriptor =
+                ParcelFileDescriptor.open(pdfFile, ParcelFileDescriptor.MODE_READ_ONLY)
             val pdfRenderer = PdfRenderer(fileDescriptor)
 
             if (pdfRenderer.pageCount > 0) {
                 val page = pdfRenderer.openPage(0)
+                // 创建 Bitmap
                 val bitmap = createBitmap(page.width, page.height)
+                val canvas = Canvas(bitmap)
+                canvas.drawColor(Color.WHITE) // 填充白色背景
+
                 page.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY)
                 page.close()
 
@@ -169,5 +212,4 @@ class PdfScanner(
             null
         }
     }
-
 }

app/src/main/res/drawable/back_black.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="256dp"
+    android:height="256dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+  <path
+      android:pathData="M927.9,478.1 L168.9,478.1l308.7,-308.9c11.7,-11.7 11.4,-30.9 -0.6,-42.9 -12,-12 -31.2,-12.2 -42.9,-0.5L75.2,484.9c-2,1.7 -3.8,3.6 -5.3,5.7 -4,5.4 -6,11.8 -5.9,18.3 -0.1,7.8 2.7,15.6 8.6,21.4l361.6,361.7c11.7,11.7 30.9,11.4 42.9,-0.5 12,-12 12.2,-31.2 0.6,-42.9L168.4,539.5l759.4,0c16.5,0 29.9,-13.7 29.9,-30.7S944.4,478.1 927.9,478.1z"
+      android:fillColor="#2c2c2c"/>
+</vector>

app/src/main/res/drawable/dr_item_img_frame.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <stroke android:color="@color/line_color"
+        android:width="1dp"/>
+    <corners android:radius="8dp" />
+</shape>

app/src/main/res/layout/activity_main.xml

@@ -90,7 +90,7 @@
         <LinearLayout
             android:id="@+id/pnLayout"
             android:layout_width="match_parent"
-            android:layout_height="58dp"
+            android:layout_height="64dp"
             android:background="@drawable/dr_rounded_corner_top_bg_grey"
             android:gravity="center_vertical"
             android:orientation="horizontal"
@@ -115,18 +115,20 @@
                 <TextView
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
+                    android:fontFamily="@font/poppins_medium"
                     android:text="@string/notice"
                     android:textColor="@color/black"
-                    android:textSize="16sp" />
+                    android:textSize="14sp" />
 
                 <TextView
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:ellipsize="end"
+                    android:fontFamily="@font/poppins_regular"
                     android:maxLines="2"
                     android:text="@string/permission_notice"
                     android:textColor="@color/black_60"
-                    android:textSize="14sp" />
+                    android:textSize="12sp" />
 
             </LinearLayout>
 
@@ -140,14 +142,14 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:background="@drawable/dr_click_btn_bg"
+                    android:fontFamily="@font/poppins_semibold"
                     android:paddingStart="24dp"
                     android:paddingTop="4dp"
                     android:paddingEnd="24dp"
                     android:paddingBottom="4dp"
                     android:text="@string/go"
                     android:textColor="@color/white"
-                    android:textSize="14sp"
+                    android:textSize="14sp" />
-                    android:textStyle="bold" />
             </LinearLayout>
         </LinearLayout>
 
@@ -173,6 +175,7 @@
                     android:id="@+id/home_tv"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
+                    android:fontFamily="@font/poppins_regular"
                     android:text="@string/home"
                     android:textColor="@color/black"
                     android:textSize="14sp" />
@@ -196,6 +199,7 @@
                     android:id="@+id/recently_tv"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
+                    android:fontFamily="@font/poppins_regular"
                     android:text="@string/recently"
                     android:textColor="@color/black"
                     android:textSize="14sp" />
@@ -219,6 +223,7 @@
                     android:id="@+id/favorite_tv"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
+                    android:fontFamily="@font/poppins_regular"
                     android:text="@string/favorite"
                     android:textColor="@color/black"
                     android:textSize="14sp" />
@@ -242,6 +247,7 @@
                     android:id="@+id/tools_tv"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
+                    android:fontFamily="@font/poppins_regular"
                     android:text="@string/tools"
                     android:textColor="@color/black"
                     android:textSize="14sp" />

app/src/main/res/layout/activity_pdf_view.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/white"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="56dp"
+        android:gravity="center_vertical"
+        android:orientation="horizontal">
+
+        <LinearLayout
+            android:id="@+id/backBtn"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:gravity="center">
+
+            <ImageView
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:src="@drawable/back_black" />
+
+        </LinearLayout>
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:background="@color/bg_color">
+
+        <com.github.barteksc.pdfviewer.PDFView
+            android:id="@+id/pdfview"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
+
+    </LinearLayout>
+
+</LinearLayout>

app/src/main/res/layout/activity_splash.xml

@@ -2,8 +2,8 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:gravity="center"
     android:background="@color/bg_color"
+    android:gravity="center"
     android:orientation="vertical">
 
     <!-- App Logo -->
@@ -19,10 +19,10 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginTop="24dp"
+        android:fontFamily="@font/poppins_semibold"
         android:text="@string/app_name"
         android:textColor="@color/black"
-        android:textSize="28sp"
+        android:textSize="28sp" />
-        android:textStyle="bold" />
 
     <!-- App Description -->
     <TextView
@@ -31,6 +31,7 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="8dp"
         android:alpha="0.8"
+        android:fontFamily="@font/poppins_medium"
         android:text="@string/splash_desc"
         android:textColor="@color/black"
         android:textSize="16sp" />

app/src/main/res/layout/adapter_pdf_item.xml

@@ -14,12 +14,19 @@
         android:gravity="center_vertical"
         android:orientation="horizontal">
 
+        <RelativeLayout
+            android:layout_width="56dp"
+            android:layout_height="56dp"
+            android:background="@drawable/dr_item_img_frame">
+
             <ImageView
                 android:id="@+id/tvFileImg"
-            android:layout_width="54dp"
+                android:layout_width="56dp"
-            android:layout_height="54dp"
+                android:layout_height="56dp"
                 android:src="@mipmap/ic_launcher_round" />
 
+        </RelativeLayout>
+
         <LinearLayout
             android:layout_width="0dp"
             android:layout_height="match_parent"
@@ -32,12 +39,12 @@
                 android:id="@+id/tvFileName"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:ellipsize="marquee"
+                android:maxLines="1"
                 android:text="@string/app_name"
                 android:textColor="@color/black"
-                android:maxLines="1"
-                android:ellipsize="marquee"
                 android:textSize="16sp"
-                android:textStyle="bold" />
+                android:fontFamily="@font/poppins_semibold"/>
 
             <LinearLayout
                 android:layout_width="match_parent"
@@ -51,6 +58,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:text="2月27,2025"
+                    android:fontFamily="@font/poppins_medium"
                     android:textColor="@color/black_60"
                     android:textSize="14sp" />
 
@@ -60,6 +68,7 @@
                     android:layout_height="wrap_content"
                     android:layout_marginStart="8dp"
                     android:text="8.1MB"
+                    android:fontFamily="@font/poppins_medium"
                     android:textColor="@color/black_60"
                     android:textSize="14sp" />
 

app/src/main/res/layout/dialog_permission.xml

@@ -40,17 +40,18 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginBottom="8dp"
+            android:fontFamily="@font/poppins_semibold"
             android:gravity="center"
             android:text="@string/permission_required"
             android:textColor="@color/black"
-            android:textSize="20sp"
+            android:textSize="20sp" />
-            android:textStyle="bold" />
 
         <TextView
             android:id="@+id/pr_desc"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginBottom="8dp"
+            android:fontFamily="@font/poppins_regular"
             android:gravity="center"
             android:text="@string/permission_required_desc_1"
             android:textColor="@color/black_80"
@@ -76,6 +77,7 @@
                     android:layout_width="0dp"
                     android:layout_height="match_parent"
                     android:layout_weight="1"
+                    android:fontFamily="@font/poppins_regular"
                     android:gravity="center_vertical"
                     android:text="@string/permission_required_desc_2"
                     android:textColor="@color/black_80"
@@ -105,10 +107,10 @@
             <TextView
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:fontFamily="@font/poppins_semibold"
                 android:text="@string/allow_access"
                 android:textColor="@color/white"
-                android:textSize="16sp"
+                android:textSize="16sp" />
-                android:textStyle="bold" />
         </LinearLayout>
     </LinearLayout>
 </LinearLayout>

app/src/main/res/layout/dialog_sort.xml

@@ -13,7 +13,7 @@
         android:text="@string/sort_by"
         android:textColor="@color/black"
         android:textSize="18sp"
-        android:textStyle="bold" />
+        android:fontFamily="@font/poppins_semibold"/>
 
     <LinearLayout
         android:layout_width="match_parent"
@@ -41,6 +41,7 @@
                 android:layout_marginStart="16dp"
                 android:layout_weight="1"
                 android:text="@string/created_date"
+                android:fontFamily="@font/poppins_regular"
                 android:textColor="@color/black"
                 android:textSize="16sp" />
 
@@ -69,6 +70,7 @@
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:layout_marginStart="16dp"
+                android:fontFamily="@font/poppins_regular"
                 android:layout_weight="1"
                 android:text="@string/file_name"
                 android:textColor="@color/black"
@@ -101,6 +103,7 @@
                 android:layout_height="wrap_content"
                 android:layout_marginStart="16dp"
                 android:layout_weight="1"
+                android:fontFamily="@font/poppins_regular"
                 android:text="@string/file_size"
                 android:textColor="@color/black"
                 android:textSize="16sp" />
@@ -145,6 +148,7 @@
                 android:layout_height="wrap_content"
                 android:layout_marginStart="16dp"
                 android:layout_weight="1"
+                android:fontFamily="@font/poppins_regular"
                 android:text="@string/ascending"
                 android:textColor="@color/black"
                 android:textSize="16sp" />
@@ -177,6 +181,7 @@
                 android:layout_marginStart="16dp"
                 android:layout_weight="1"
                 android:text="@string/descending"
+                android:fontFamily="@font/poppins_regular"
                 android:textColor="@color/black"
                 android:textSize="16sp" />
 
@@ -211,7 +216,7 @@
                 android:text="@string/cancel"
                 android:textColor="@color/black"
                 android:textSize="16sp"
-                android:textStyle="bold" />
+                android:fontFamily="@font/poppins_semibold" />
         </LinearLayout>
 
         <LinearLayout
@@ -229,7 +234,7 @@
                 android:text="@string/ok"
                 android:textColor="@color/white"
                 android:textSize="16sp"
-                android:textStyle="bold" />
+                android:fontFamily="@font/poppins_semibold" />
         </LinearLayout>
 
     </LinearLayout>

app/src/main/res/layout/fragment_home.xml

@@ -18,7 +18,9 @@
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/recyclerView"
             android:layout_width="match_parent"
-            android:layout_height="match_parent" />
+            android:layout_height="match_parent"
+            android:clipToPadding="false"
+            android:paddingBottom="40dp" />
 
     </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 

app/src/main/res/values/strings.xml

@@ -21,6 +21,7 @@
     <string name="file_size">File Size</string>
     <string name="ascending">Ascending</string>
     <string name="descending">Descending</string>
-    <string name="permission_denied">权限被拒绝</string>
+    <string name="permission_denied">Permission Denied</string>
     <string name="pd_content_notice">Unable to access PDF file, please grant storage permission in settings</string>
+    <string name="file_not">File does not exist</string>
 </resources>

gradle/libs.versions.toml

@@ -1,6 +1,8 @@
 [versions]
+androidpdfviewer = "3.2.8"
 appcompat = "1.7.1"
 agp = "8.10.1"
+glide = "5.0.4"
 kotlin = "2.0.21"
 ksp = "2.0.21-1.0.27"
 coreKtx = "1.17.0"
@@ -10,6 +12,7 @@ espressoCore = "3.7.0"
 lifecycleRuntimeKtx = "2.9.2"
 immersionbar = "3.2.2"
 immersionbarKtx = "3.2.2"
+pdfboxAndroid = "2.0.27.0"
 room_version = "2.7.2"
 swiperefreshlayout = "1.1.0"
 recyclerview = "1.4.0"
@@ -17,11 +20,13 @@ protoliteWellKnownTypes = "18.0.1"
 material = "1.12.0"
 
 [libraries]
+androidpdfviewer = { module = "com.github.marain87:AndroidPdfViewer", version.ref = "androidpdfviewer" }
 androidx-appcompat = { module = "androidx.appcompat:appcompat", version.ref = "appcompat" }
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
 androidx-room-compiler = { group = "androidx.room", name = "room-compiler", version.ref = "room_version" }
 androidx-room-ktx = { group = "androidx.room", name = "room-ktx", version.ref = "room_version" }
 androidx-room-runtime = { group = "androidx.room", name = "room-runtime", version.ref = "room_version" }
+glide = { module = "com.github.bumptech.glide:glide", version.ref = "glide" }
 junit = { group = "junit", name = "junit", version.ref = "junit" }
 androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
 androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
@@ -30,6 +35,7 @@ immersionbar = { group = "com.geyifeng.immersionbar", name = "immersionbar", ver
 immersionbar-ktx = { group = "com.geyifeng.immersionbar", name = "immersionbar-ktx", version.ref = "immersionbarKtx" }
 androidx-swiperefreshlayout = { group = "androidx.swiperefreshlayout", name = "swiperefreshlayout", version.ref = "swiperefreshlayout" }
 androidx-recyclerview = { group = "androidx.recyclerview", name = "recyclerview", version.ref = "recyclerview" }
+pdfbox-android = { module = "com.tom-roush:pdfbox-android", version.ref = "pdfboxAndroid" }
 protolite-well-known-types = { group = "com.google.firebase", name = "protolite-well-known-types", version.ref = "protoliteWellKnownTypes" }
 material = { group = "com.google.android.material", name = "material", version.ref = "material" }
 

settings.gradle.kts

@@ -16,6 +16,7 @@ dependencyResolutionManagement {
     repositories {
         google()
         mavenCentral()
+        maven("https://jitpack.io")
     }
 }