add search and sort

.idea/compiler.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="17" />
+    <bytecodeTargetLevel target="21" />
   </component>
 </project>

.idea/gradle.xml

@@ -4,8 +4,9 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <option name="testRunner" value="CHOOSE_PER_TEST" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+        <option name="gradleJvm" value="#JAVA_HOME" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />

.idea/misc.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/build.gradle.kts

@@ -69,6 +69,7 @@ dependencies {
     implementation(libs.ui.graphics)
     implementation(libs.ui.tooling.preview)
     implementation(libs.material3)
+    implementation(libs.androidx.datastore.preferences)
     testImplementation(libs.junit)
     androidTestImplementation(libs.ext.junit)
     androidTestImplementation(libs.espresso.core)

app/src/main/AndroidManifest.xml

@@ -2,6 +2,15 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission
+        android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
+        tools:ignore="ScopedStorage" />
+    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -12,6 +21,11 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.MyApplication"
         tools:targetApi="31">
+        <activity
+            android:name=".compose.SettingActivity"
+            android:exported="false"
+            android:label="@string/title_activity_setting"
+            android:theme="@style/Theme.MyApplication" />
         <activity
             android:name=".compose.SearchActivity"
             android:exported="false"
@@ -30,15 +44,12 @@
         <activity
             android:name=".compose.ViewFileActivity"
             android:exported="false" />
-
         <activity
             android:name=".main_page"
             android:exported="false" />
-
         <activity
             android:name=".store_page"
             android:exported="false" />
-
         <activity
             android:name=".document_page"
             android:exported="false" />
@@ -63,14 +74,4 @@
         </provider>
     </application>
 
-  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-  <uses-permission
-      android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
-      tools:ignore="ScopedStorage" />
-  <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
-  <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
-  <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
-
-  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-
 </manifest>

app/src/main/java/com/example/myapplication/SettingStorage.kt

@@ -0,0 +1,37 @@
+package com.example.myapplication
+
+import android.content.Context
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.Preferences
+import androidx.datastore.preferences.core.booleanPreferencesKey
+import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.preferencesDataStore
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+
+val Context.settingStore: DataStore<Preferences> by preferencesDataStore(name = "app_settings")
+
+class SettingStorage(private val context: Context) {
+  val showExtension = booleanPreferencesKey("show_extension")
+
+
+  fun <T> get(key: Preferences.Key<T>): T? =
+    runBlocking {
+      context.settingStore.data
+        .map { value ->
+          value[key]
+        }
+        .first()
+    }
+
+  fun <T> set(key: Preferences.Key<T>, value: T) =
+    CoroutineScope(Dispatchers.Default).launch {
+      context.settingStore.edit {
+        it[key] = value
+      }
+    }
+}

app/src/main/java/com/example/myapplication/compose/SearchActivity.kt

@@ -4,6 +4,13 @@ import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.material3.Surface
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import com.example.myapplication.R
+import com.example.myapplication.compose.ui.SearchFileColumn
 import com.example.myapplication.fileSystem.byTypeFileLister.DocumentLister
 import com.example.myapplication.fileSystem.byTypeFileLister.ImageLister
 import com.example.myapplication.fileSystem.byTypeFileLister.MusicLister
@@ -20,10 +27,22 @@ class SearchActivity : ComponentActivity() {
       "document" -> DocumentLister.regex
       else -> null
     }
+    val searchFileColumn = SearchFileColumn(this,when (type) {
+      "music" -> getString(R.string.music)
+      "image" -> getString(R.string.picture)
+      "video" -> getString(R.string.video)
+      "document" -> getString(R.string.document)
+      else -> ""
+    },searchTypeRegex)
 
     enableEdgeToEdge()
     setContent {
-
+      Surface(
+        modifier = Modifier
+          .fillMaxSize()
+          .background(Color(getColor(R.color.WhiteSmoke)))
+      )
+      { searchFileColumn.Draw() }
     }
   }
 }

app/src/main/java/com/example/myapplication/compose/SettingActivity.kt

@@ -0,0 +1,17 @@
+package com.example.myapplication.compose
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+
+class SettingActivity : ComponentActivity() {
+  override fun onCreate(savedInstanceState: Bundle?) {
+    super.onCreate(savedInstanceState)
+    enableEdgeToEdge()
+    setContent {
+
+    }
+  }
+}
+

app/src/main/java/com/example/myapplication/compose/ui/FileColumn.kt

@@ -63,6 +63,9 @@ import com.example.myapplication.fileSystem.WrappedFile.Type
 import com.example.myapplication.main_page
 import com.example.myapplication.utils.AlertHelper
 import com.example.myapplication.utils.ClipHelper
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import org.apache.commons.io.IOUtils
 import java.io.File
 import java.io.FileNotFoundException
@@ -74,17 +77,26 @@ class FileColumn(val context: Context) {
   fun Draw(startFolder: String) {
     var path by remember { mutableStateOf(startFolder) }
     var shouldUpdate by remember { mutableStateOf(false) }
+
+    // 检查当前在的目录，有问题就不渲染
     val cwd = File(path)
     if (!cwd.isDirectory) {
       return
     }
-    var isOkay by remember { mutableStateOf(false) }
 
-    LaunchedEffect(path, shouldUpdate) {
+    var isOkay by remember { mutableStateOf(false) }
+    var sortByTime by remember { mutableStateOf(true) }
+
+    LaunchedEffect(path, shouldUpdate, sortByTime) {
       isOkay = false
       fileList.clear()
-      cwd.listFiles()?.forEach { f ->
+      val wfList = cwd.listFiles()?.map { WrappedFile(it) }
-        fileList.add(WrappedFile(f))
+      if (wfList!=null) {
+        if (sortByTime) {
+          fileList.addAll(wfList.sortedBy { it.lastModifiedTime })
+        } else {
+          fileList.addAll(wfList.sortedBy { it.size })
+        }
       }
       isOkay = true
     }
@@ -120,11 +132,42 @@ class FileColumn(val context: Context) {
         Text(
           text = path,
           fontSize = 24.sp,
-          modifier = Modifier.padding(start = 16.dp),
+          modifier = Modifier.padding(start = 10.dp)
+            .fillMaxWidth(0.75f),
           maxLines = 1,
           overflow = TextOverflow.Ellipsis
         )
 
+        Spacer(modifier = Modifier.weight(1f))
+
+        IconButton(
+          onClick = {
+            sortByTime = !sortByTime
+            CoroutineScope(Dispatchers.Main).launch {
+              Toast.makeText(
+                context, context.getString(
+                  if (sortByTime) {
+                    R.string.sort_by_time
+                  } else {
+                    R.string.sort_by_size
+                  }
+                ), Toast.LENGTH_SHORT
+              ).show()
+            }
+          },
+        ) {
+          Image(
+            imageVector = ImageVector.vectorResource(
+              if (sortByTime) {
+                R.drawable.baseline_access_time_24
+              } else {
+                R.drawable.baseline_storage_24
+              }
+            ), "sortMethod"
+          )
+        }
+
+
       }
       if (!isOkay) {
         Column(

app/src/main/java/com/example/myapplication/compose/ui/SearchFileColumn.kt

@@ -0,0 +1,358 @@
+package com.example.myapplication.compose.ui
+
+import android.content.Context
+import android.content.Intent
+import android.widget.Toast
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+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.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.material3.TextFieldDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusRequester
+import androidx.compose.ui.focus.focusRequester
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.RectangleShape
+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.style.TextOverflow
+import androidx.compose.ui.unit.Dp
+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.fileSystem.CutHelper
+import com.example.myapplication.fileSystem.WrappedFile
+import com.example.myapplication.fileSystem.WrappedFile.Type
+import com.example.myapplication.fileSystem.searchFile
+import com.example.myapplication.main_page
+import com.example.myapplication.utils.AlertHelper
+import com.example.myapplication.utils.ClipHelper
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import java.io.File
+
+class SearchFileColumn(
+  val context: Context,
+  private val searchTypeName: String,
+  private val searchRegex: Regex?
+) {
+  private val fileList = mutableStateListOf<WrappedFile>()
+  private val searchText = mutableStateOf("")
+
+  @Composable
+  fun Draw() {
+    var list by remember { mutableStateOf<List<String>>(emptyList()) }
+    var isOkay by remember { mutableStateOf(false) }
+    var sortByTime by remember { mutableStateOf(true) }
+
+    LaunchedEffect(isOkay, list,sortByTime) {
+      isOkay = false
+      fileList.clear()
+      val wfList = list.map { WrappedFile(File(it)) }
+      if (sortByTime) {
+        fileList.addAll(wfList.sortedBy { it.lastModifiedTime })
+      } else {
+        fileList.addAll(wfList.sortedBy { it.size })
+      }
+      isOkay = true
+    }
+
+    Column(
+      modifier = Modifier
+        .fillMaxSize()
+        .statusBarsPadding()
+        .navigationBarsPadding()
+        .background(Color(context.getColor(R.color.WhiteSmoke)))
+    ) {
+      Row(
+        modifier = Modifier
+          .fillMaxWidth()
+          .padding(horizontal = 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 = context.getString(R.string.search_result, searchTypeName),
+          fontSize = 28.sp,
+          modifier = Modifier
+            .padding(start = 10.dp)
+            .padding(vertical = 5.dp),
+          maxLines = 1,
+          overflow = TextOverflow.Ellipsis
+        )
+
+        Spacer(modifier = Modifier.weight(1f))
+
+        IconButton(
+          onClick = {
+            sortByTime = !sortByTime
+            CoroutineScope(Dispatchers.Main).launch {
+              Toast.makeText(
+                context, context.getString(
+                  if (sortByTime) {
+                    R.string.sort_by_time
+                  } else {
+                    R.string.sort_by_size
+                  }
+                ), Toast.LENGTH_SHORT
+              ).show()
+            }
+          },
+        ) {
+          Image(
+            imageVector = ImageVector.vectorResource(
+              if (sortByTime) {
+                R.drawable.baseline_access_time_24
+              } else {
+                R.drawable.baseline_storage_24
+              }
+            ), "sortMethod"
+          )
+        }
+
+      }
+      if (!isOkay) {
+        Column(
+          modifier = Modifier.fillMaxSize(),
+          horizontalAlignment = Alignment.CenterHorizontally,
+          verticalArrangement = Arrangement.Center
+        ) {
+          Text(
+            text = context.getString(R.string.loading),
+            fontSize = 34.sp
+          )
+        }
+      } else {
+        DrawColumns(fileList,
+          searchText = searchText.value,
+          onSearch = { name, searchWhat ->
+            searchText.value = searchWhat
+            searchFile(name, searchRegex) {
+              list = it
+              CoroutineScope(Dispatchers.Main).launch {
+                if (list.isEmpty()) {
+                  Toast.makeText(
+                    context,
+                    context.getString(R.string.search_no_result), Toast.LENGTH_SHORT
+                  ).show()
+                } else {
+                  Toast.makeText(
+                    context,
+                    context.getString(R.string.search_some_result, list.size), Toast.LENGTH_SHORT
+                  ).show()
+                }
+                isOkay = !isOkay
+              }
+            }
+          }
+        ) {
+          val file = File(it)
+          if (file.isFile) {
+            val uri = FileProvider.getUriForFile(
+              context,
+              context.packageName + ".provider",
+              file
+            )
+            val intent = Intent(Intent.ACTION_VIEW)
+            intent.setDataAndType(uri, WrappedFile(file).mime)
+            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+            context.startActivity(intent)
+          }
+        }
+      }
+    }
+  }
+
+  @Composable
+  private fun DrawColumns(
+    fileList: List<WrappedFile>,
+    update: (() -> Unit)? = null,
+    searchText: String = "",
+    onSearch: ((String, String) -> Unit)? = null,
+    onItemClick: ((String) -> Unit)? = null
+  ) {
+    LazyColumn(
+      modifier = Modifier.padding(vertical = 5.dp)
+    ) {
+      // 最顶上那个
+      item {
+        Row(
+          modifier = Modifier
+            .fillMaxWidth()
+            .padding(vertical = 3.dp),
+          verticalAlignment = Alignment.CenterVertically,
+        ) {
+          var searchInput by remember { mutableStateOf(searchText) }
+
+          TextField(
+            value = searchInput,
+            maxLines = 1,
+            onValueChange = { searchInput = it },
+            modifier = Modifier
+              .padding(horizontal = 15.dp, vertical = 10.dp)
+              .fillParentMaxWidth(0.9f),
+            colors = TextFieldDefaults.colors(
+              focusedContainerColor = Color(0xFFFFFAFA),
+              unfocusedContainerColor = Color.White,
+              focusedIndicatorColor = Color(0xFF03A9F4),
+              unfocusedIndicatorColor = Color.Transparent
+            ),
+            textStyle = TextStyle(fontSize = 18.sp),
+            trailingIcon = {
+              Image(
+                ImageVector.vectorResource(R.drawable.ic_search),
+                context.getString(R.string.search),
+                modifier = Modifier
+                  .clickable {
+                    if (searchInput.isNotEmpty()) {
+                      if (searchInput == "." || searchInput == "..") {
+                        Toast
+                          .makeText(
+                            context,
+                            context.getString(R.string.error_search_input_illegal),
+                            Toast.LENGTH_SHORT
+                          )
+                          .show()
+                      }
+                      onSearch?.invoke(searchInput, searchInput)
+                    } else {
+                      Toast
+                        .makeText(
+                          context,
+                          context.getString(R.string.error_need_search_input), Toast.LENGTH_SHORT
+                        )
+                        .show()
+                    }
+                  }
+              )
+            }
+          )
+        }
+      }
+
+      // 下面的内容
+      items(fileList) { file ->
+        FileSingleView(
+          file,
+          update = update,
+          onItemClick = onItemClick
+        )
+      }
+    }
+  }
+
+  @Composable
+  private fun FileSingleView(
+    file: WrappedFile,
+    update: (() -> Unit)? = null,
+    onItemClick: ((String) -> Unit)? = null
+  ) {
+
+    Row(
+      modifier = Modifier
+        .fillMaxWidth()
+        .border(
+          width = Dp.Hairline,
+          color = Color.Gray,
+          shape = RectangleShape
+        )
+        .padding(vertical = 3.dp)
+        .clickable {
+          onItemClick?.invoke(file.path)
+        },
+      verticalAlignment = Alignment.CenterVertically,
+    ) {
+      Image(
+        ImageVector.vectorResource(
+          when (file.mime.split('/').first()) {
+            "dir" -> R.drawable.type_directory
+            "image" -> R.drawable.type_image
+            "video" -> R.drawable.type_video
+            "audio" -> R.drawable.type_audio
+            else -> R.drawable.type_file
+          }
+        ), file.mime,
+        modifier = Modifier
+          .padding(horizontal = 8.dp)
+      )
+      Column(
+        modifier = Modifier
+          .padding(horizontal = 15.dp)
+          .fillMaxWidth(0.8f)
+      ) {
+        Text(
+          text = file.name,
+          fontSize = 24.sp,
+          maxLines = 1,
+          overflow = TextOverflow.Ellipsis
+        )
+        Text(
+          text = file.getModifiedTimeString(context),
+          fontSize = 15.sp,
+          color = Color.Gray,
+          maxLines = 1
+        )
+      }
+
+      Spacer(Modifier.weight(1f))
+
+      IconButton(
+        onClick = {
+          if (file.type == Type.FILE) { // 普通文件
+            AlertHelper.showOnlyInfoNewAlert(context,
+              onInfo = {
+                AlertHelper.showFileInfoAlert(context, file.path)
+              }
+            )
+          }
+        },
+        modifier = Modifier.padding(horizontal = 10.dp)
+      ) {
+        Image(
+          ImageVector.vectorResource(R.drawable.outline_info_24), "info"
+        )
+      }
+    }
+
+  }
+}

app/src/main/java/com/example/myapplication/compose/ui/Setting.kt

@@ -0,0 +1,68 @@
+package com.example.myapplication.compose.ui
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.Switch
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.unit.dp
+
+class Setting(
+  private val rowModifier: Modifier = Modifier.fillMaxWidth(),
+  private val nameModifier: Modifier = Modifier,
+  private val nameTextStyle: TextStyle = TextStyle.Default,
+  private val descriptionModifier: Modifier = Modifier,
+  private val descriptionTextStyle: TextStyle = TextStyle.Default,
+  private val switchModifier: Modifier = Modifier
+) {
+
+  @Composable
+  fun BooleanSetting(
+    name: String,
+    initialState: Boolean = true,
+    description: String? = null,
+    onCheckedChange: ((Boolean) -> Unit)? = null
+  ) {
+    var checkState by remember { mutableStateOf(initialState) }
+
+    Row(
+      verticalAlignment = Alignment.CenterVertically,
+      modifier = rowModifier
+    ) {
+      Column(
+        modifier = Modifier.fillMaxWidth(0.8f)
+      ) {
+        Text(
+          text = name,
+          modifier = nameModifier,
+          style = nameTextStyle
+        )
+        Spacer(modifier = Modifier.size(5.dp))
+        Text(
+          text = description ?: "",
+          modifier = descriptionModifier,
+          style = descriptionTextStyle
+        )
+      }
+      Spacer(modifier = Modifier.weight(1f))
+      Switch(
+        checked = checkState,
+        onCheckedChange = {
+          checkState = it
+          onCheckedChange?.invoke(it)
+        },
+        modifier = switchModifier
+      )
+    }
+  }
+}

app/src/main/java/com/example/myapplication/document_page.kt

@@ -222,7 +222,7 @@ class document_page : AppCompatActivity() {
                 loadingTextView.visibility = View.GONE
                 Toast.makeText(
                   this@document_page,
-                  "已选择按时间排序",
+                  getString(R.string.sort_by_time),
                   Toast.LENGTH_SHORT
                 ).show()
               }
@@ -245,7 +245,7 @@ class document_page : AppCompatActivity() {
                 loadingTextView.visibility = View.GONE
                 Toast.makeText(
                   this@document_page,
-                  "已选择按大小排序",
+                  getString(R.string.sort_by_size),
                   Toast.LENGTH_SHORT
                 ).show()
               }

app/src/main/java/com/example/myapplication/fileSystem/FileSearcher.kt

@@ -0,0 +1,45 @@
+package com.example.myapplication.fileSystem
+
+import android.content.Context
+import android.os.Environment
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.launch
+import java.io.File
+
+fun searchFile(name: String,typeRegex: Regex? = null, onFinished: (List<String>) -> Unit){
+  CoroutineScope(Dispatchers.IO).launch {
+    val resultList = searchDir(name,Environment.getExternalStorageDirectory().path)
+    if (typeRegex == null){
+      onFinished.invoke(resultList)
+    }else{
+      val finalResult = resultList.filter { it.contains(typeRegex) }
+      onFinished.invoke(finalResult)
+    }
+  }
+}
+
+suspend fun searchDir(name: String, directory: String): List<String> {
+  val list = mutableListOf<String>()
+  val dir = File(directory)
+  if (!dir.isDirectory || dir.name.startsWith('.')){
+    return emptyList()
+  }
+
+  val inside = dir.listFiles()
+  if (inside == null || inside.isEmpty()){
+    return emptyList()
+  }
+
+  inside.forEach {
+    if (it.isDirectory){
+        list.addAll(coroutineScope{ searchDir(name, it.path) })
+    }else if (it.isFile){
+      if (it.name.contains(name) && !it.name.startsWith('.') ){
+        list.add(it.path)
+      }
+    }
+  }
+  return list
+}

app/src/main/java/com/example/myapplication/main_page.java

@@ -10,6 +10,8 @@ import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.graphics.Insets;
 import androidx.core.view.ViewCompat;
 import androidx.core.view.WindowInsetsCompat;
+
+import com.example.myapplication.compose.SearchActivity;
 import com.example.myapplication.compose.ViewFileActivity;
 import com.example.myapplication.fileSystem.DeleteHelper;
 import java.io.File;
@@ -41,6 +43,7 @@ public class main_page extends AppCompatActivity {
     findViewById(R.id.MainPageRecordingButton).setOnClickListener(buttonClickerHandler);
     findViewById(R.id.MainPageDCIMButton).setOnClickListener(buttonClickerHandler);
     findViewById(R.id.MainPagePicturesButton).setOnClickListener(buttonClickerHandler);
+    findViewById(R.id.MainPageSearchButton).setOnClickListener(buttonClickerHandler);
   }
 
   @Override protected void onDestroy() {
@@ -124,6 +127,10 @@ public class main_page extends AppCompatActivity {
         intent.putExtras(bundle);
         startActivity(intent);
       }
+      if (view.getId() == R.id.MainPageSearchButton) {
+        Intent intent = new Intent(context, SearchActivity.class);
+        startActivity(intent);
+      }
     }
   }
 }

app/src/main/java/com/example/myapplication/utils/AlertHelper.kt

@@ -125,6 +125,26 @@ class AlertHelper {
         .show()
     }
 
+    fun showOnlyInfoNewAlert(
+      context: Context,
+      onInfo: () -> Unit,
+    ) {
+      val builder = Builder(context)
+      builder.setTitle(context.getString(R.string.select_action))
+        .setItems(
+          arrayOf<CharSequence>(
+            context.getString(R.string.action_info)
+          )
+        ) { _: DialogInterface?, which: Int ->
+          when (which) {
+            1 -> onInfo()
+          }
+        }
+        .setNegativeButton(context.getString(R.string.action_cancel))
+        { dialog: DialogInterface, which: Int -> dialog.dismiss() }
+        .show()
+    }
+
     fun showDeleteAlert(context: Context, file: String, onConfirm: (() -> Unit)?) {
       val builder = Builder(context)
       builder.setTitle(context.getString(R.string.confirm_to_delete))

app/src/main/res/drawable/baseline_access_time_24.xml

@@ -0,0 +1,7 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="40dp" android:tint="#1A1B3F" android:viewportHeight="24" android:viewportWidth="24" android:width="40dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M11.99,2C6.47,2 2,6.48 2,12s4.47,10 9.99,10C17.52,22 22,17.52 22,12S17.52,2 11.99,2zM12,20c-4.42,0 -8,-3.58 -8,-8s3.58,-8 8,-8 8,3.58 8,8 -3.58,8 -8,8z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M12.5,7H11v6l5.25,3.15 0.75,-1.23 -4.5,-2.67z"/>
+    
+</vector>

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

@@ -1,4 +1,9 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="40dp" android:tint="#000000" android:viewportHeight="23" android:viewportWidth="23" android:width="40dp">
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="40dp"
+    android:height="40dp"
+    android:tint="#000000"
+    android:viewportWidth="23"
+    android:viewportHeight="23">
 
     <path
         android:fillColor="@android:color/white"

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

@@ -36,7 +36,7 @@
         android:scrollbars="none"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/searchDocument"
+        app:layout_constraintTop_toBottomOf="@+id/MainPageSearchButton"
         >
 
       <LinearLayout
@@ -329,19 +329,21 @@
     </ScrollView>
 
 
-    <SearchView
+  <Button
-        android:id="@+id/searchDocument"
+      android:id="@+id/MainPageSearchButton"
-        android:layout_width="wrap_content"
+      android:layout_width="match_parent"
       android:layout_height="wrap_content"
-        android:layout_gravity="center"
+      android:backgroundTint="@color/white"
-        android:layout_marginTop="15dp"
+      android:drawableLeft="@drawable/ic_search"
-        android:background="@drawable/search_border"
+      android:gravity="center"
-        android:iconifiedByDefault="false"
+      android:layout_marginHorizontal="60dp"
-        android:queryHint="搜索文件"
+      android:text="@string/search_file"
       android:textColor="@color/black"
+      android:textSize="20sp"
       app:layout_constraintStart_toStartOf="parent"
       app:layout_constraintEnd_toEndOf="parent"
       app:layout_constraintTop_toBottomOf="@+id/MainPageTitleRow"
       />
+
   </androidx.constraintlayout.widget.ConstraintLayout>
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -128,4 +128,13 @@
     <string name="error_already_exist">已存在此文件（夹）</string>
     <string name="title_activity_view_file">ViewFileActivity</string>
     <string name="title_activity_search">SearchActivity</string>
+    <string name="search_result">搜索%s结果</string>
+    <string name="error_need_search_input">请输入要搜索的内容</string>
+    <string name="error_search_input_illegal">输入的搜索内容不合法</string>
+    <string name="search_file">搜索文件</string>
+    <string name="search_no_result">未找到任何结果</string>
+    <string name="search_some_result">找到%d个结果</string>
+    <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>
 </resources>

gradle/libs.versions.toml

@@ -15,6 +15,7 @@ lifecycleRuntimeKtx = "2.8.6"
 activityCompose = "1.9.2"
 composeBom = "2024.09.03"
 commonsIO = "2.17.0"
+datastorePreferences = "1.1.1"
 
 [libraries]
 junit = { group = "junit", name = "junit", version.ref = "junit" }
@@ -38,6 +39,7 @@ ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
 ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
 material3 = { group = "androidx.compose.material3", name = "material3" }
 commons-io = { group = "commons-io", name = "commons-io", version.ref = "commonsIO"  }
+androidx-datastore-preferences = { module = "androidx.datastore:datastore-preferences", version.ref = "datastorePreferences" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }