diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
index f2f5c22..7a909ae 100644
--- a/.idea/deploymentTargetSelector.xml
+++ b/.idea/deploymentTargetSelector.xml
@@ -4,10 +4,10 @@
     <selectionStates>
       <SelectionState runConfigName="app">
         <option name="selectionMode" value="DROPDOWN" />
-        <DropdownSelection timestamp="2024-10-09T05:47:14.530453572Z">
+        <DropdownSelection timestamp="2024-10-11T03:45:10.780689385Z">
           <Target type="DEFAULT_BOOT">
             <handle>
-              <DeviceId pluginId="LocalEmulator" identifier="path=/home/kagura/.android/avd/Pixel_6_API_33.avd" />
+              <DeviceId pluginId="LocalEmulator" identifier="path=/home/kagura/.android/avd/Pixel_3_API_30.avd" />
             </handle>
           </Target>
         </DropdownSelection>
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 55df8d7..ecd50f0 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -6,7 +6,7 @@
       <GradleProjectSettings>
         <option name="testRunner" value="CHOOSE_PER_TEST" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="#JAVA_HOME" />
+        <option name="gradleJvm" value="jbr-17" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/app/src/main/java/com/example/myapplication/compose/SettingActivity.kt b/app/src/main/java/com/example/myapplication/compose/SettingActivity.kt
index ca0bb4e..c628336 100644
--- a/app/src/main/java/com/example/myapplication/compose/SettingActivity.kt
+++ b/app/src/main/java/com/example/myapplication/compose/SettingActivity.kt
@@ -1,16 +1,135 @@
 package com.example.myapplication.compose
 
+import android.content.Intent
+import android.os.Build
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.navigationBarsPadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.res.vectorResource
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.core.content.ContextCompat
+import com.example.myapplication.R
+import com.example.myapplication.SettingStorage
+import com.example.myapplication.compose.ui.Setting
+import com.example.myapplication.main_page
 
 class SettingActivity : ComponentActivity() {
   override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)
     enableEdgeToEdge()
-    setContent {
+    val setting = Setting(
+      rowModifier = Modifier
+        .fillMaxWidth()
+        .padding(horizontal = 20.dp, vertical = 10.dp),
+      nameTextStyle = TextStyle(
+        fontSize = 24.sp,
+        fontWeight = FontWeight(400),
+        fontFamily = FontFamily.SansSerif
+      ),
+      descriptionModifier = Modifier.padding(start = 2.dp)
+    )
 
+    val settingStorage = SettingStorage(this)
+    val context = this
+
+    setContent {
+      Surface(
+        modifier = Modifier
+          .fillMaxSize()
+      ) {
+        Column(
+          modifier = Modifier
+            .background(Color(getColor(R.color.WhiteSmoke)))
+            .statusBarsPadding()
+        ) {
+          Row(
+            modifier = Modifier
+              .fillMaxWidth()
+              .padding(horizontal = 10.dp, vertical = 10.dp),
+            verticalAlignment = Alignment.CenterVertically
+          ) {
+            IconButton(
+              onClick = {
+                val intent = Intent(
+                  context,
+                  main_page::class.java
+                )
+                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_SINGLE_TOP)
+                context.startActivity(intent)
+              }
+            ) {
+              Image(
+                imageVector = ImageVector.vectorResource(R.drawable.ic_left_arrow), "back"
+              )
+            }
+
+            Text(
+              text = getString(R.string.settings),
+              fontSize = 30.sp,
+              modifier = Modifier
+                .padding(start = 10.dp)
+                .fillMaxWidth(0.75f),
+              maxLines = 1,
+              overflow = TextOverflow.Ellipsis
+            )
+          }
+
+          setting.BooleanSetting(
+            name = ContextCompat.getString(context, R.string.setting_show_extension),
+            description = ContextCompat.getString(
+              context,
+              R.string.setting_show_extension_description
+            ),
+            initialState = settingStorage.get(settingStorage.showExtension) ?: true
+          ) { settingStorage.set(settingStorage.showExtension, it) }
+
+
+          Spacer(modifier = Modifier.weight(1f))
+
+          Text(
+            text = stringResource(R.string.about),
+            fontSize = 18.sp,
+            color = Color.Gray,
+            modifier = Modifier.padding(start = 10.dp)
+          )
+          setting.BooleanSetting(
+            name = "作者",
+            description = "B22040723 舒乔嘉祺\nB22040721 黄译",
+            initialState = null
+          ) { }
+          setting.BooleanSetting(
+            name = "系统信息",
+            description = "Android 版本：${Build.VERSION.RELEASE}\n手机型号: ${Build.MANUFACTURER} ${Build.MODEL}",
+            initialState = null
+          ) { }
+
+          Spacer(modifier = Modifier.navigationBarsPadding())
+        }
+      }
     }
   }
 }
diff --git a/app/src/main/java/com/example/myapplication/compose/ui/FileColumn.kt b/app/src/main/java/com/example/myapplication/compose/ui/FileColumn.kt
index 78746db..3d5de4a 100644
--- a/app/src/main/java/com/example/myapplication/compose/ui/FileColumn.kt
+++ b/app/src/main/java/com/example/myapplication/compose/ui/FileColumn.kt
@@ -56,6 +56,7 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.core.content.FileProvider
 import com.example.myapplication.R
+import com.example.myapplication.SettingStorage
 import com.example.myapplication.compose.PasteHelper
 import com.example.myapplication.fileSystem.CutHelper
 import com.example.myapplication.fileSystem.WrappedFile
@@ -72,6 +73,7 @@ import java.io.FileNotFoundException
 
 class FileColumn(val context: Context) {
   private val fileList = mutableStateListOf<WrappedFile>()
+  private val settingStorage = SettingStorage(context)
 
   @Composable
   fun Draw(startFolder: String) {
@@ -132,7 +134,8 @@ class FileColumn(val context: Context) {
         Text(
           text = path,
           fontSize = 24.sp,
-          modifier = Modifier.padding(start = 10.dp)
+          modifier = Modifier
+            .padding(start = 10.dp)
             .fillMaxWidth(0.75f),
           maxLines = 1,
           overflow = TextOverflow.Ellipsis
@@ -526,13 +529,21 @@ class FileColumn(val context: Context) {
           .fillMaxWidth(0.8f)
       ) {
         Text(
-          text = forceName ?: file.name,
+          text = forceName ?: if (settingStorage.get(settingStorage.showExtension) == false || file.type == Type.DIRECTORY){
+            file.nameWithoutExt
+          }else{
+            file.name
+          },
           fontSize = 24.sp,
           maxLines = 1,
           overflow = TextOverflow.Ellipsis
         )
         Text(
-          text = forceParent ?: file.getModifiedTimeString(context),
+          text = forceParent ?: if (file.type == Type.FILE){
+            "${file.getModifiedTimeString(context)}   ${file.getSizeString()}"
+          }else{
+            file.getModifiedTimeString(context)
+          },
           fontSize = 15.sp,
           color = Color.Gray,
           maxLines = 1
diff --git a/app/src/main/java/com/example/myapplication/compose/ui/Setting.kt b/app/src/main/java/com/example/myapplication/compose/ui/Setting.kt
index b34d8b5..0fadaf7 100644
--- a/app/src/main/java/com/example/myapplication/compose/ui/Setting.kt
+++ b/app/src/main/java/com/example/myapplication/compose/ui/Setting.kt
@@ -29,7 +29,7 @@ class Setting(
   @Composable
   fun BooleanSetting(
     name: String,
-    initialState: Boolean = true,
+    initialState: Boolean? = true,
     description: String? = null,
     onCheckedChange: ((Boolean) -> Unit)? = null
   ) {
@@ -55,14 +55,16 @@ class Setting(
         )
       }
       Spacer(modifier = Modifier.weight(1f))
-      Switch(
-        checked = checkState,
-        onCheckedChange = {
-          checkState = it
-          onCheckedChange?.invoke(it)
-        },
-        modifier = switchModifier
-      )
+      if (checkState != null) {
+        Switch(
+          checked = checkState!!,
+          onCheckedChange = {
+            checkState = it
+            onCheckedChange?.invoke(it)
+          },
+          modifier = switchModifier
+        )
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/document_page.kt b/app/src/main/java/com/example/myapplication/document_page.kt
index 00c5542..ba15b0f 100644
--- a/app/src/main/java/com/example/myapplication/document_page.kt
+++ b/app/src/main/java/com/example/myapplication/document_page.kt
@@ -19,8 +19,8 @@ import androidx.core.content.FileProvider
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsCompat.Type
-import com.example.myapplication.adapters.DocumentAdapter
-import com.example.myapplication.adapters.DocumentModel
+import com.example.myapplication.fileSystem.adapters.DocumentAdapter
+import com.example.myapplication.fileSystem.adapters.DocumentModel
 import com.example.myapplication.compose.SearchActivity
 import com.example.myapplication.fileSystem.CutHelper
 import com.example.myapplication.fileSystem.byTypeFileLister.DocumentLister.Companion.instance
diff --git a/app/src/main/java/com/example/myapplication/adapters/Document.kt b/app/src/main/java/com/example/myapplication/fileSystem/adapters/Document.kt
similarity index 68%
rename from app/src/main/java/com/example/myapplication/adapters/Document.kt
rename to app/src/main/java/com/example/myapplication/fileSystem/adapters/Document.kt
index 2691501..d0b5fed 100644
--- a/app/src/main/java/com/example/myapplication/adapters/Document.kt
+++ b/app/src/main/java/com/example/myapplication/fileSystem/adapters/Document.kt
@@ -1,4 +1,4 @@
-package com.example.myapplication.adapters
+package com.example.myapplication.fileSystem.adapters
 
 import android.content.Context
 import android.view.LayoutInflater
@@ -7,10 +7,12 @@ import android.view.ViewGroup
 import android.widget.ArrayAdapter
 import android.widget.TextView
 import com.example.myapplication.R
+import com.example.myapplication.SettingStorage
 import java.io.File
 
 class DocumentModel(document: File) {
   val name: String = document.name
+  val nameWithoutExt: String = document.nameWithoutExtension
 
   init {
     if (!document.isFile) {
@@ -21,13 +23,19 @@ class DocumentModel(document: File) {
 
 class DocumentAdapter(context: Context, list: ArrayList<DocumentModel>) :
   ArrayAdapter<DocumentModel>(context, 0, list) {
+  private val settingStorage = SettingStorage(context)
+  private val showExtension = settingStorage.get(settingStorage.showExtension)
   override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
     val listView = convertView ?: LayoutInflater.from(context).inflate(
       R.layout.document_card_item, parent, false
     )
     val model = getItem(position) ?: throw RuntimeException()
     val card = listView.findViewById<TextView>(R.id.iconButton)
-    card.text = model.name
+    card.text = if (showExtension != false) {
+      model.name
+    } else {
+      model.nameWithoutExt
+    }
     return listView
   }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/adapters/Image.kt b/app/src/main/java/com/example/myapplication/fileSystem/adapters/Image.kt
similarity index 77%
rename from app/src/main/java/com/example/myapplication/adapters/Image.kt
rename to app/src/main/java/com/example/myapplication/fileSystem/adapters/Image.kt
index bc23924..aeb12bf 100644
--- a/app/src/main/java/com/example/myapplication/adapters/Image.kt
+++ b/app/src/main/java/com/example/myapplication/fileSystem/adapters/Image.kt
@@ -1,4 +1,4 @@
-package com.example.myapplication.adapters
+package com.example.myapplication.fileSystem.adapters
 
 import android.content.Context
 import android.graphics.Bitmap
@@ -13,11 +13,13 @@ import android.widget.GridView
 import android.widget.ImageView
 import android.widget.TextView
 import com.example.myapplication.R
+import com.example.myapplication.SettingStorage
 import java.io.File
 
 class ImageModel(image: File) {
   val name: String = image.name
   var thumbnail: Bitmap
+  val nameWithoutExt: String = image.nameWithoutExtension
 
   init {
     if (!image.isFile) {
@@ -29,13 +31,19 @@ class ImageModel(image: File) {
 
 class ImageAdapter(context: Context, list: ArrayList<ImageModel>) :
   ArrayAdapter<ImageModel>(context, 0, list) {
+  private val settingStorage = SettingStorage(context)
+  private val showExtension = settingStorage.get(settingStorage.showExtension)
   override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
     val listView = convertView ?: LayoutInflater.from(context).inflate(
       R.layout.picture_card_item, parent, false
     )
     val model = getItem(position) ?: throw RuntimeException()
     listView.findViewById<ImageView>(R.id.pictureCardImage).setImageBitmap(model.thumbnail)
-    listView.findViewById<TextView>(R.id.pictureCardText).text = model.name
+    listView.findViewById<TextView>(R.id.pictureCardText).text = if (showExtension != false) {
+      model.name
+    } else {
+      model.nameWithoutExt
+    }
     listView.setLayoutParams(LayoutParams(GridView.AUTO_FIT, 530))
 
     return listView
diff --git a/app/src/main/java/com/example/myapplication/adapters/Music.kt b/app/src/main/java/com/example/myapplication/fileSystem/adapters/Music.kt
similarity index 69%
rename from app/src/main/java/com/example/myapplication/adapters/Music.kt
rename to app/src/main/java/com/example/myapplication/fileSystem/adapters/Music.kt
index 916d134..5b5515f 100644
--- a/app/src/main/java/com/example/myapplication/adapters/Music.kt
+++ b/app/src/main/java/com/example/myapplication/fileSystem/adapters/Music.kt
@@ -1,4 +1,4 @@
-package com.example.myapplication.adapters
+package com.example.myapplication.fileSystem.adapters
 
 import android.content.Context
 import android.view.LayoutInflater
@@ -7,10 +7,12 @@ import android.view.ViewGroup
 import android.widget.ArrayAdapter
 import android.widget.TextView
 import com.example.myapplication.R
+import com.example.myapplication.SettingStorage
 import java.io.File
 
 class MusicModel(music: File) {
   val name: String = music.nameWithoutExtension // 歌曲就不放扩展名了
+  val nameWithoutExt: String = music.nameWithoutExtension
 
   init {
     if (!music.isFile) {
@@ -21,13 +23,19 @@ class MusicModel(music: File) {
 
 class MusicAdapter(context: Context, list: ArrayList<MusicModel>) :
   ArrayAdapter<MusicModel>(context, 0, list) {
+  private val settingStorage = SettingStorage(context)
+  private val showExtension = settingStorage.get(settingStorage.showExtension)
   override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
     val listView = convertView ?: LayoutInflater.from(context).inflate(
       R.layout.music_card_item, parent, false
     )
     val model = getItem(position) ?: throw RuntimeException()
     val card = listView.findViewById<TextView>(R.id.iconButton)
-    card.text = model.name
+    card.text = if (showExtension != false) {
+      model.name
+    } else {
+      model.nameWithoutExt
+    }
     return listView
   }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/adapters/Video.kt b/app/src/main/java/com/example/myapplication/fileSystem/adapters/Video.kt
similarity index 78%
rename from app/src/main/java/com/example/myapplication/adapters/Video.kt
rename to app/src/main/java/com/example/myapplication/fileSystem/adapters/Video.kt
index 97fde5e..6fe664b 100644
--- a/app/src/main/java/com/example/myapplication/adapters/Video.kt
+++ b/app/src/main/java/com/example/myapplication/fileSystem/adapters/Video.kt
@@ -1,4 +1,4 @@
-package com.example.myapplication.adapters
+package com.example.myapplication.fileSystem.adapters
 
 import android.content.Context
 import android.graphics.Bitmap
@@ -13,11 +13,13 @@ import android.widget.GridView
 import android.widget.ImageView
 import android.widget.TextView
 import com.example.myapplication.R
+import com.example.myapplication.SettingStorage
 import java.io.File
 
 class VideoModel(video: File) {
   val name: String = video.name
   var thumbnail: Bitmap
+  val nameWithoutExt: String = video.nameWithoutExtension
 
   init {
     if (!video.isFile) {
@@ -32,13 +34,19 @@ class VideoModel(video: File) {
 
 class VideoAdapter(context: Context, list: ArrayList<VideoModel>) :
   ArrayAdapter<VideoModel>(context, 0, list) {
+  private val settingStorage = SettingStorage(context)
+  private val showExtension = settingStorage.get(settingStorage.showExtension)
   override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
     val listView = convertView ?: LayoutInflater.from(context).inflate(
       R.layout.picture_card_item, parent, false
     )
     val model = getItem(position) ?: throw RuntimeException()
     listView.findViewById<ImageView>(R.id.pictureCardImage).setImageBitmap(model.thumbnail)
-    listView.findViewById<TextView>(R.id.pictureCardText).text = model.name
+    listView.findViewById<TextView>(R.id.pictureCardText).text = if (showExtension != false) {
+      model.name
+    } else {
+      model.nameWithoutExt
+    }
     listView.setLayoutParams(LayoutParams(GridView.AUTO_FIT, 530))
 
     return listView
diff --git a/app/src/main/java/com/example/myapplication/main_page.java b/app/src/main/java/com/example/myapplication/main_page.java
index 45c73e4..5055ff6 100644
--- a/app/src/main/java/com/example/myapplication/main_page.java
+++ b/app/src/main/java/com/example/myapplication/main_page.java
@@ -12,6 +12,7 @@ import androidx.core.view.ViewCompat;
 import androidx.core.view.WindowInsetsCompat;
 
 import com.example.myapplication.compose.SearchActivity;
+import com.example.myapplication.compose.SettingActivity;
 import com.example.myapplication.compose.ViewFileActivity;
 import com.example.myapplication.fileSystem.DeleteHelper;
 import java.io.File;
@@ -44,6 +45,7 @@ public class main_page extends AppCompatActivity {
     findViewById(R.id.MainPageDCIMButton).setOnClickListener(buttonClickerHandler);
     findViewById(R.id.MainPagePicturesButton).setOnClickListener(buttonClickerHandler);
     findViewById(R.id.MainPageSearchButton).setOnClickListener(buttonClickerHandler);
+    findViewById(R.id.MainPageSettingsButton).setOnClickListener(buttonClickerHandler);
   }
 
   @Override protected void onDestroy() {
@@ -131,6 +133,10 @@ public class main_page extends AppCompatActivity {
         Intent intent = new Intent(context, SearchActivity.class);
         startActivity(intent);
       }
+      if (view.getId() == R.id.MainPageSettingsButton) {
+        Intent intent = new Intent(context, SettingActivity.class);
+        startActivity(intent);
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/myapplication/music_page.kt b/app/src/main/java/com/example/myapplication/music_page.kt
index b44681f..0d7ecb0 100644
--- a/app/src/main/java/com/example/myapplication/music_page.kt
+++ b/app/src/main/java/com/example/myapplication/music_page.kt
@@ -18,8 +18,8 @@ import androidx.core.content.FileProvider
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsCompat.Type
-import com.example.myapplication.adapters.MusicAdapter
-import com.example.myapplication.adapters.MusicModel
+import com.example.myapplication.fileSystem.adapters.MusicAdapter
+import com.example.myapplication.fileSystem.adapters.MusicModel
 import com.example.myapplication.compose.SearchActivity
 import com.example.myapplication.fileSystem.CutHelper
 import com.example.myapplication.fileSystem.byTypeFileLister.DocumentLister
diff --git a/app/src/main/java/com/example/myapplication/picture_page.kt b/app/src/main/java/com/example/myapplication/picture_page.kt
index 3bef84f..0b31fa8 100644
--- a/app/src/main/java/com/example/myapplication/picture_page.kt
+++ b/app/src/main/java/com/example/myapplication/picture_page.kt
@@ -18,8 +18,8 @@ import androidx.core.content.FileProvider
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsCompat.Type
-import com.example.myapplication.adapters.ImageAdapter
-import com.example.myapplication.adapters.ImageModel
+import com.example.myapplication.fileSystem.adapters.ImageAdapter
+import com.example.myapplication.fileSystem.adapters.ImageModel
 import com.example.myapplication.compose.SearchActivity
 import com.example.myapplication.fileSystem.CutHelper
 import com.example.myapplication.fileSystem.byTypeFileLister.DocumentLister
diff --git a/app/src/main/java/com/example/myapplication/video_page.kt b/app/src/main/java/com/example/myapplication/video_page.kt
index 8288bb5..7c3ca73 100644
--- a/app/src/main/java/com/example/myapplication/video_page.kt
+++ b/app/src/main/java/com/example/myapplication/video_page.kt
@@ -18,8 +18,8 @@ import androidx.core.content.FileProvider
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsCompat.Type
-import com.example.myapplication.adapters.VideoAdapter
-import com.example.myapplication.adapters.VideoModel
+import com.example.myapplication.fileSystem.adapters.VideoAdapter
+import com.example.myapplication.fileSystem.adapters.VideoModel
 import com.example.myapplication.compose.SearchActivity
 import com.example.myapplication.fileSystem.CutHelper
 import com.example.myapplication.fileSystem.byTypeFileLister.DocumentLister
diff --git a/app/src/main/res/menu/function.xml b/app/src/main/res/menu/function.xml
deleted file mode 100644
index cb7b03d..0000000
--- a/app/src/main/res/menu/function.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
-    <item
-        android:id="@+id/Delete"
-        android:title="@string/Delete" />
-    <item
-        android:id="@+id/copy"
-        android:title="@string/copy" />
-    <item
-        android:id="@+id/cut"
-        android:title="@string/cut" />
-    <item
-        android:id="@+id/paste"
-        android:title="@string/paste" />
-    <item
-        android:id="@+id/unload"
-        android:title="@string/unload" />
-</menu>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c0aa372..93df3ae 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -13,65 +13,15 @@
     <string name="delete">最近删除</string>
     <string name="download">下载与接收</string>
     <string name="source">来源</string>
-    <string name="qq">QQ</string>
-    <string name="wechat">微信</string>
     <string name="internet">浏览器</string>
     <string name="radio">录音机</string>
-    <string name="installpackage">安装包</string>
-    <string name="Camera">Camera</string>
-    <string name="Screenshots">屏幕截图</string>
-    <!-- Strings used for fragments for navigation -->
-    <string name="first_fragment_label">First Fragment</string>
-    <string name="second_fragment_label">Second Fragment</string>
     <string name="next">Next</string>
     <string name="previous">Previous</string>
     <string name="Delete">删除</string>
     <string name="copy">复制</string>
     <string name="cut">剪切</string>
     <string name="paste">粘贴</string>
-    <string name="tiktok">抖音</string>
-    <string name="alipay">支付宝</string>
-    <string name="taobao">淘宝</string>
-    <string name="little_red_book">小红书</string>
-    <string name="unload">卸载</string>
-    <string name="store_package">压缩包</string>
-    <string name="phone_information">通话与信息</string>
-    <string name="lorem_ipsum">
-        Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam in scelerisque sem. Mauris
-        volutpat, dolor id interdum ullamcorper, risus dolor egestas lectus, sit amet mattis purus
-        dui nec risus. Maecenas non sodales nisi, vel dictum dolor. Class aptent taciti sociosqu ad
-        litora torquent per conubia nostra, per inceptos himenaeos. Suspendisse blandit eleifend
-        diam, vel rutrum tellus vulputate quis. Aliquam eget libero aliquet, imperdiet nisl a,
-        ornare ex. Sed rhoncus est ut libero porta lobortis. Fusce in dictum tellus.\n\n
-        Suspendisse interdum ornare ante. Aliquam nec cursus lorem. Morbi id magna felis. Vivamus
-        egestas, est a condimentum egestas, turpis nisl iaculis ipsum, in dictum tellus dolor sed
-        neque. Morbi tellus erat, dapibus ut sem a, iaculis tincidunt dui. Interdum et malesuada
-        fames ac ante ipsum primis in faucibus. Curabitur et eros porttitor, ultricies urna vitae,
-        molestie nibh. Phasellus at commodo eros, non aliquet metus. Sed maximus nisl nec dolor
-        bibendum, vel congue leo egestas.\n\n
-        Sed interdum tortor nibh, in sagittis risus mollis quis. Curabitur mi odio, condimentum sit
-        amet auctor at, mollis non turpis. Nullam pretium libero vestibulum, finibus orci vel,
-        molestie quam. Fusce blandit tincidunt nulla, quis sollicitudin libero facilisis et. Integer
-        interdum nunc ligula, et fermentum metus hendrerit id. Vestibulum lectus felis, dictum at
-        lacinia sit amet, tristique id quam. Cras eu consequat dui. Suspendisse sodales nunc ligula,
-        in lobortis sem porta sed. Integer id ultrices magna, in luctus elit. Sed a pellentesque
-        est.\n\n
-        Aenean nunc velit, lacinia sed dolor sed, ultrices viverra nulla. Etiam a venenatis nibh.
-        Morbi laoreet, tortor sed facilisis varius, nibh orci rhoncus nulla, id elementum leo dui
-        non lorem. Nam mollis ipsum quis auctor varius. Quisque elementum eu libero sed commodo. In
-        eros nisl, imperdiet vel imperdiet et, scelerisque a mauris. Pellentesque varius ex nunc,
-        quis imperdiet eros placerat ac. Duis finibus orci et est auctor tincidunt. Sed non viverra
-        ipsum. Nunc quis augue egestas, cursus lorem at, molestie sem. Morbi a consectetur ipsum, a
-        placerat diam. Etiam vulputate dignissim convallis. Integer faucibus mauris sit amet finibus
-        convallis.\n\n
-        Phasellus in aliquet mi. Pellentesque habitant morbi tristique senectus et netus et
-        malesuada fames ac turpis egestas. In volutpat arcu ut felis sagittis, in finibus massa
-        gravida. Pellentesque id tellus orci. Integer dictum, lorem sed efficitur ullamcorper,
-        libero justo consectetur ipsum, in mollis nisl ex sed nisl. Donec maximus ullamcorper
-        sodales. Praesent bibendum rhoncus tellus nec feugiat. In a ornare nulla. Donec rhoncus
-        libero vel nunc consequat, quis tincidunt nisl eleifend. Cras bibendum enim a justo luctus
-        vestibulum. Fusce dictum libero quis erat maximus, vitae volutpat diam dignissim.
-    </string>
+
     <string name="title_activity_require_permission">RequirePermissionActivity</string>
 
     <string name="require_permission_readwrite">需要读取/写入存储权限以继续</string>
@@ -137,4 +87,7 @@
     <string name="sort_by_size">已选择按大小排序</string>
     <string name="sort_by_time">已选择按时间排序</string>
     <string name="title_activity_setting">SettingActivity</string>
+    <string name="setting_show_extension">显示扩展名</string>
+    <string name="setting_show_extension_description">如果打开，则会显示 abc.txt，否则只显示 abc</string>
+  <string name="about">关于</string>
 </resources>
\ No newline at end of file