添加输入密码查询pdf

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

@@ -3,7 +3,6 @@ package com.all.pdfreader.pro.app.room.entity
 import android.os.Parcelable
 import androidx.room.Entity
 import androidx.room.PrimaryKey
-import com.all.pdfreader.pro.app.ui.dialog.PdfPasswordDialog
 import kotlinx.parcelize.Parcelize
 
 @Parcelize

app/src/main/java/com/all/pdfreader/pro/app/room/repository/PdfRepository.kt

@@ -42,7 +42,7 @@ class PdfRepository private constructor(context: Context) {
         pdfDao.searchDocuments(query)
 
     suspend fun updateFavoriteStatus(fileHash: String, isFavorite: Boolean) {
-        val document = pdfDao.getByHash(fileHash)?.copy(
+        val document = pdfDao.getByPath(fileHash)?.copy(
             isFavorite = isFavorite,
             addedToFavoriteTime = if (isFavorite) System.currentTimeMillis() else null
         )
@@ -50,7 +50,7 @@ class PdfRepository private constructor(context: Context) {
     }
 
     suspend fun updateReadingProgress(fileHash: String, page: Int, progress: Float) {
-        val document = pdfDao.getByHash(fileHash)?.copy(
+        val document = pdfDao.getByPath(fileHash)?.copy(
             lastOpenedTime = System.currentTimeMillis(),
             lastReadPage = page,
             readingProgress = progress
@@ -59,14 +59,14 @@ class PdfRepository private constructor(context: Context) {
     }
 
     suspend fun updatePasswordStatus(fileHash: String, isPassword: Boolean) {
-        val document = pdfDao.getByHash(fileHash)?.copy(
+        val document = pdfDao.getByPath(fileHash)?.copy(
             isPassword = isPassword
         )
         document?.let { pdfDao.update(it) }
     }
 
     suspend fun updatePassword(fileHash: String, password: String?) {
-        val document = pdfDao.getByHash(fileHash)?.copy(
+        val document = pdfDao.getByPath(fileHash)?.copy(
             password = password
         )
         document?.let { pdfDao.update(it) }
@@ -113,7 +113,7 @@ class PdfRepository private constructor(context: Context) {
     // 组合查询
     suspend fun getPdfWithDetails(pdfHash: String): Flow<PdfDetails> {
         return combine(
-            pdfDao.getByHash(pdfHash)?.let { kotlinx.coroutines.flow.flowOf(it) }
+            pdfDao.getByPath(pdfHash)?.let { kotlinx.coroutines.flow.flowOf(it) }
                 ?: kotlinx.coroutines.flow.flowOf(null),
             bookmarkDao.getBookmarksByPdf(pdfHash),
             noteDao.getNotesByPdf(pdfHash)

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

@@ -8,6 +8,7 @@ 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.all.pdfreader.pro.app.ui.dialog.PdfPasswordProtectionDialogFragment
 import com.all.pdfreader.pro.app.ui.view.CustomScrollHandle
 import com.all.pdfreader.pro.app.viewmodel.PdfViewModel
 import com.github.barteksc.pdfviewer.listener.OnErrorListener
@@ -63,32 +64,13 @@ class PdfViewActivity : BaseActivity(), OnLoadCompleteListener, OnPageChangeList
         // 使用传递的文件路径加载PDF
         val file = File(pdfDocument.filePath)
         if (file.exists()) {
-            val pdfView = binding.pdfview
+            //需要密码展示对话框。
-            
+            if (pdfDocument.isPassword) {
-            // 如果有密码，先尝试使用密码加载
+                showPasswordDialog(file)
-            if (!pdfDocument.password.isNullOrEmpty()) {
+                return
-                try {
-                    pdfView.fromFile(file)
-                        .password(pdfDocument.password) // 使用密码加载
-                        .defaultPage(pdfDocument.lastReadPage)
-                        .enableDoubletap(true)
-                        .onLoad(this)
-                        .enableAnnotationRendering(true)
-                        .onError(this)
-                        .onPageChange(this)
-                        .scrollHandle(CustomScrollHandle(this))
-                        .load()
-                    return
-                } catch (e: Exception) {
-                    logDebug("Password protected PDF failed: ${e.message}")
-                    // 密码错误，显示密码输入对话框
-                    showPasswordDialog(file)
-                    return
-                }
             }
-            
             // 无密码PDF正常加载
-            pdfView.fromFile(file)
+            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)
@@ -113,22 +95,13 @@ class PdfViewActivity : BaseActivity(), OnLoadCompleteListener, OnPageChangeList
         logDebug("PDF loading error: ${t?.message}")
         t?.let {
             val errorMessage = it.message ?: "未知错误"
-            
             // 检查是否是密码相关的错误
             if (errorMessage.contains("Password") || errorMessage.contains("password")) {
-                // 如果当前没有设置密码，显示密码输入对话框
+                val file = File(pdfDocument.filePath)
-                if (pdfDocument.password.isNullOrEmpty()) {
+                showPasswordDialog(file)
-                    val file = File(pdfDocument.filePath)
-                    showPasswordDialog(file)
-                } else {
-                    // 密码错误，显示密码输入对话框
-                    showToast("PDF密码错误")
-                    val file = File(pdfDocument.filePath)
-                    showPasswordDialog(file)
-                }
             } else {
                 // 其他错误
-                showToast("PDF加载失败: $errorMessage")
+                showToast(getString(R.string.pdf_loading_failed))
                 finish()
             }
         }
@@ -156,57 +129,23 @@ class PdfViewActivity : BaseActivity(), OnLoadCompleteListener, OnPageChangeList
     }
 
     private fun showPasswordDialog(file: File) {
-        val builder = android.app.AlertDialog.Builder(this)
+        PdfPasswordProtectionDialogFragment(file, onOkClick = { password ->
-        builder.setTitle("PDF密码保护")
+            tryLoadPdfWithPassword(file, password)
-        builder.setMessage("请输入PDF文件密码：")
+        }, onCancelClick = {
-        
-        val input = android.widget.EditText(this)
-        input.inputType = android.text.InputType.TYPE_CLASS_TEXT or android.text.InputType.TYPE_TEXT_VARIATION_PASSWORD
-        builder.setView(input)
-        
-        builder.setPositiveButton("确定") { dialog, _ ->
-            val password = input.text.toString()
-            if (password.isNotEmpty()) {
-                // 尝试使用输入的密码重新加载PDF
-                tryLoadPdfWithPassword(file, password)
-            } else {
-                showToast("密码不能为空")
-            }
-            dialog.dismiss()
-        }
-        
-        builder.setNegativeButton("取消") { dialog, _ ->
-            dialog.cancel()
             finish()
-        }
+        }).show(supportFragmentManager, TAG)
-        
-        builder.setOnCancelListener {
-            finish()
-        }
-        
-        builder.show()
     }
 
     private fun tryLoadPdfWithPassword(file: File, password: String) {
-        try {
+        binding.pdfview.fromFile(file)
-            binding.pdfview.fromFile(file)
+            .password(password) // 使用输入的密码
-                .password(password) // 使用输入的密码
+            .defaultPage(pdfDocument.lastReadPage) // 从上次阅读页码开始
-                .defaultPage(pdfDocument.lastReadPage)
+            .enableDoubletap(true)// 是否允许双击缩放
-                .enableDoubletap(true)
+            .onLoad(this)
-                .onLoad(this)
+            .enableAnnotationRendering(true)  // 是否渲染注释（如评论、颜色、表单等）
-                .enableAnnotationRendering(true)
+            .onError(this)
-                .onError { error ->
+            .onPageChange(this)
-                    logDebug("Password still incorrect: ${error?.message}")
+            .scrollHandle(CustomScrollHandle(this))
-                    showToast("密码错误，请重试")
+            .load()
-                    showPasswordDialog(file) // 重新显示密码对话框
-                }
-                .onPageChange(this)
-                .scrollHandle(CustomScrollHandle(this))
-                .load()
-        } catch (e: Exception) {
-            logDebug("Failed to load PDF with provided password: ${e.message}")
-            showToast("密码错误，请重试")
-            showPasswordDialog(file) // 重新显示密码对话框
-        }
     }
 }

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/PdfPasswordProtectionDialogFragment.kt

@@ -0,0 +1,82 @@
+package com.all.pdfreader.pro.app.ui.dialog
+
+import android.content.Context
+import android.graphics.Color
+import android.graphics.drawable.ColorDrawable
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import android.view.inputmethod.InputMethodManager
+import androidx.fragment.app.DialogFragment
+import com.all.pdfreader.pro.app.R
+import com.all.pdfreader.pro.app.databinding.DialogPdfPasswordProtectionBinding
+import com.all.pdfreader.pro.app.databinding.DialogPermissionBinding
+import com.all.pdfreader.pro.app.databinding.DialogSortBinding
+import com.all.pdfreader.pro.app.model.SortConfig
+import com.all.pdfreader.pro.app.model.SortDirection
+import com.all.pdfreader.pro.app.model.SortField
+import com.all.pdfreader.pro.app.room.entity.PdfDocumentEntity
+import com.all.pdfreader.pro.app.sp.AppStore
+import com.all.pdfreader.pro.app.ui.act.MainActivity.SortableFragment
+import com.all.pdfreader.pro.app.ui.view.CustomPasswordTransformation
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment
+import androidx.core.graphics.drawable.toDrawable
+import com.all.pdfreader.pro.app.util.AppUtils.showKeyboard
+import com.all.pdfreader.pro.app.util.FileUtils.isPdfPasswordCorrect
+import java.io.File
+
+class PdfPasswordProtectionDialogFragment(
+    private val file: File,
+    private val onOkClick: (String) -> Unit,
+    private val onCancelClick: () -> Unit
+) : DialogFragment() {
+
+    private lateinit var binding: DialogPdfPasswordProtectionBinding
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
+    ): View? {
+        binding = DialogPdfPasswordProtectionBinding.inflate(layoutInflater)
+        return binding.root
+    }
+
+    override fun onStart() {
+        super.onStart()
+        isCancelable = false
+        dialog?.window?.apply {
+            // 去掉系统默认的背景 padding
+            setBackgroundDrawable(Color.TRANSPARENT.toDrawable())
+            // 设置宽度为全屏减去 16dp
+            val margin = resources.getDimensionPixelSize(R.dimen.dialog_margin) // 16dp
+            val width = resources.displayMetrics.widthPixels - margin * 2
+            setLayout(width, ViewGroup.LayoutParams.WRAP_CONTENT)
+        }
+    }
+
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        binding.etPassword.showKeyboard()
+
+        binding.tvCancel.setOnClickListener {
+            onCancelClick()
+            dismiss()
+        }
+        binding.tvConfirm.setOnClickListener {
+            val password = binding.etPassword.text.toString()
+            if(password.isEmpty()){
+                binding.tilPassword.error = getString(R.string.password_not_empty)
+                return@setOnClickListener
+            }
+            if(isPdfPasswordCorrect(requireActivity(),file,password)){
+                onOkClick(password)
+                dismiss()
+            }else{
+                binding.tilPassword.error = getString(R.string.incorrect_password)
+            }
+        }
+    }
+}

app/src/main/java/com/all/pdfreader/pro/app/ui/dialog/PdfSetPasswordDialog.kt

@@ -1,6 +1,5 @@
 package com.all.pdfreader.pro.app.ui.dialog
 
-import android.app.Dialog
 import android.content.Context
 import android.os.Bundle
 import android.text.Editable
@@ -9,11 +8,11 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.DialogFragment
-import com.all.pdfreader.pro.app.databinding.DialogPdfPasswordBinding
+import com.all.pdfreader.pro.app.databinding.DialogPdfSetPasswordBinding
 
-class PdfPasswordDialog : DialogFragment() {
+class PdfSetPasswordDialog : DialogFragment() {
 
-    private var _binding: DialogPdfPasswordBinding? = null
+    private var _binding: DialogPdfSetPasswordBinding? = null
     private val binding get() = _binding!!
     private var listener: PasswordDialogListener? = null
 
@@ -23,13 +22,17 @@ class PdfPasswordDialog : DialogFragment() {
     }
 
     companion object {
-        fun newInstance(): PdfPasswordDialog {
+        fun newInstance(): PdfSetPasswordDialog {
-            return PdfPasswordDialog()
+            return PdfSetPasswordDialog()
         }
     }
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+    override fun onCreateView(
-        _binding = DialogPdfPasswordBinding.inflate(inflater, container, false)
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        _binding = DialogPdfSetPasswordBinding.inflate(inflater, container, false)
         return binding.root
     }
 

app/src/main/java/com/all/pdfreader/pro/app/ui/view/CustomPasswordTransformation.kt

@@ -0,0 +1,24 @@
+package com.all.pdfreader.pro.app.ui.view
+
+import android.text.method.PasswordTransformationMethod
+import android.view.View
+
+class CustomPasswordTransformation : PasswordTransformationMethod() {
+    override fun getTransformation(source: CharSequence, view: View): CharSequence {
+        return PasswordCharSequence(source)
+    }
+
+    private class PasswordCharSequence(private val mSource: CharSequence) : CharSequence {
+        override val length: Int
+            get() = mSource.length
+
+        override fun get(index: Int): Char {
+            // 最后一位显示原字符，其余显示●
+            return if (index == mSource.length - 1) mSource[index] else '●'
+        }
+
+        override fun subSequence(startIndex: Int, endIndex: Int): CharSequence {
+            return mSource.subSequence(startIndex, endIndex)
+        }
+    }
+}

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

@@ -1,7 +1,11 @@
 package com.all.pdfreader.pro.app.util
 
+import android.app.Activity
 import android.content.Context
 import android.view.View
+import android.view.WindowManager
+import android.view.inputmethod.InputMethodManager
+import android.widget.EditText
 
 object AppUtils {
 
@@ -42,4 +46,16 @@ object AppUtils {
         return (this * context.resources.displayMetrics.density).toInt()
     }
 
+    /**
+     * 软键盘弹出
+     */
+    fun EditText.showKeyboard() {
+        requestFocus()
+        (context as? Activity)?.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
+        postDelayed({
+            val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
+            imm.showSoftInput(this, InputMethodManager.SHOW_IMPLICIT)
+        }, 200)
+    }
+
 }

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

@@ -8,6 +8,7 @@ import android.os.ParcelFileDescriptor
 import android.provider.MediaStore
 import android.provider.OpenableColumns
 import android.util.Log
+import com.shockwave.pdfium.PdfiumCore
 import java.io.File
 import java.io.IOException
 import java.io.InputStream
@@ -345,6 +346,22 @@ object FileUtils {
         }
     }
 
+    /**
+     * 判断pdf密码是否正确
+     */
+    fun isPdfPasswordCorrect(context: Context, file: File, password: String): Boolean {
+        return try {
+            val descriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY)
+            val pdfiumCore = PdfiumCore(context)
+            val doc = pdfiumCore.newDocument(descriptor, password)
+            pdfiumCore.closeDocument(doc)
+            true // 没抛异常说明密码正确
+        } catch (e: Exception) {
+            false // 抛异常说明密码错误
+        }
+    }
+
+
     fun getFileFromUri(context: Context, uri: Uri): File? {
         // 先尝试通过 DATA 字段获取
         val projection = arrayOf(MediaStore.Files.FileColumns.DATA)

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

@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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:background="@drawable/dr_rounded_corner_12_bg_white"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:id="@+id/tvTitle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:fontFamily="@font/poppins_semibold"
+        android:text="@string/password_protection"
+        android:textColor="@color/black"
+        android:textSize="20sp" />
+
+    <TextView
+        android:id="@+id/tvMessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:fontFamily="@font/poppins_regular"
+        android:text="@string/password_protection_dialog_desc"
+        android:textColor="@color/black_80"
+        android:textSize="14sp" />
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/tilPassword"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="8dp"
+        android:hint="@string/enter_password"
+        app:endIconMode="password_toggle"
+        app:passwordToggleEnabled="true">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/etPassword"
+            android:layout_width="match_parent"
+            android:textSize="16sp"
+            android:layout_height="wrap_content"
+            android:fontFamily="@font/poppins_regular"
+            android:inputType="textPassword" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="end"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/tvCancel"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="8dp"
+            android:fontFamily="@font/poppins_regular"
+            android:padding="12dp"
+            android:text="@string/cancel"
+            android:textColor="@color/black_80" />
+
+        <TextView
+            android:id="@+id/tvConfirm"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:fontFamily="@font/poppins_medium"
+            android:padding="12dp"
+            android:text="@string/ok"
+            android:textColor="@color/black" />
+
+    </LinearLayout>
+
+</LinearLayout>

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

@@ -3,43 +3,46 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:background="@drawable/dr_rounded_corner_12_bg_white"
     android:orientation="vertical"
-    android:padding="24dp"
+    android:padding="24dp">
-    android:background="@android:color/white">
 
     <TextView
         android:id="@+id/tvTitle"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="设置PDF密码"
+        android:layout_marginBottom="16dp"
-        android:textSize="20sp"
+        android:fontFamily="@font/poppins_semibold"
-        android:textStyle="bold"
+        android:text="@string/set_pdf_password"
-        android:textColor="@android:color/black"
+        android:textColor="@color/black"
-        android:layout_marginBottom="16dp" />
+        android:textSize="20sp" />
 
     <TextView
         android:id="@+id/tvMessage"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="为PDF文件设置保护密码，留空表示不设置密码"
+        android:layout_marginBottom="16dp"
-        android:textSize="14sp"
+        android:fontFamily="@font/poppins_regular"
-        android:textColor="@android:color/darker_gray"
+        android:text="@string/set_pdf_password_dialog_desc"
-        android:layout_marginBottom="16dp" />
+        android:textColor="@color/black_60"
+        android:textSize="14sp" />
 
     <com.google.android.material.textfield.TextInputLayout
         android:id="@+id/tilPassword"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:hint="输入密码"
+        android:layout_marginBottom="8dp"
-        app:passwordToggleEnabled="true"
+        android:hint="@string/enter_password"
         app:endIconMode="password_toggle"
-        android:layout_marginBottom="8dp">
+        app:passwordToggleEnabled="true">
 
         <com.google.android.material.textfield.TextInputEditText
             android:id="@+id/etPassword"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:inputType="textPassword" />
+            android:fontFamily="@font/poppins_regular"
+            android:inputType="textPassword"
+            android:textSize="14sp" />
 
     </com.google.android.material.textfield.TextInputLayout>
 
@@ -47,43 +50,45 @@
         android:id="@+id/tilConfirmPassword"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:hint="确认密码"
+        android:layout_marginBottom="24dp"
-        app:passwordToggleEnabled="true"
+        android:hint="@string/confirm_password"
         app:endIconMode="password_toggle"
-        android:layout_marginBottom="24dp">
+        app:passwordToggleEnabled="true">
 
         <com.google.android.material.textfield.TextInputEditText
             android:id="@+id/etConfirmPassword"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:inputType="textPassword" />
+            android:fontFamily="@font/poppins_regular"
+            android:inputType="textPassword"
+            android:textSize="14sp" />
 
     </com.google.android.material.textfield.TextInputLayout>
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="horizontal"
+        android:gravity="end"
-        android:gravity="end">
+        android:orientation="horizontal">
 
         <TextView
             android:id="@+id/tvCancel"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="取消"
-            android:textColor="@color/black"
-            android:padding="12dp"
             android:layout_marginEnd="8dp"
-            android:background="?attr/selectableItemBackgroundBorderless" />
+            android:fontFamily="@font/poppins_regular"
+            android:padding="12dp"
+            android:text="@string/cancel"
+            android:textColor="@color/black_80" />
 
         <TextView
             android:id="@+id/tvConfirm"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="确认"
+            android:fontFamily="@font/poppins_medium"
-            android:textColor="@color/black"
             android:padding="12dp"
-            android:background="?attr/selectableItemBackgroundBorderless" />
+            android:text="@string/ok"
+            android:textColor="@color/black" />
 
     </LinearLayout>
 

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="dialog_margin">16dp</dimen>
+</resources>

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

@@ -28,4 +28,13 @@
     <string name="unlock">Unlock</string>
     <string name="eye_protect">Eye Protect</string>
     <string name="bookmarks">Bookmarks</string>
+    <string name="set_pdf_password">Set PDF Password</string>
+    <string name="set_pdf_password_dialog_desc">Set a protection password for the PDF file,Leaving it blank means no password is set.</string>
+    <string name="password_protection">PDF Password Protection</string>
+    <string name="enter_password">Enter password</string>
+    <string name="confirm_password">Confirm password</string>
+    <string name="password_protection_dialog_desc">Please enter the PDF file password</string>
+    <string name="password_not_empty">Password cannot be empty</string>
+    <string name="incorrect_password">Incorrect password</string>
+    <string name="pdf_loading_failed">PDF loading failed</string>
 </resources>