Add download APK file

app/build.gradle

@@ -21,8 +21,8 @@ android {
         applicationId "me.ash.reader"
         minSdk 26
         targetSdk 32
-        versionCode 5
+        versionCode 6
-        versionName "0.7.2"
+        versionName "0.7.4"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {

app/src/main/AndroidManifest.xml

@@ -4,6 +4,7 @@
     package="me.ash.reader">
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
 
     <application
         android:name=".App"
@@ -24,10 +25,21 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
         <provider
             android:name="androidx.startup.InitializationProvider"
             android:authorities="${applicationId}.androidx-startup"
-            tools:node="remove"></provider>
+            tools:node="remove" />
+
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
     </application>
 
 </manifest>

app/src/main/java/me/ash/reader/App.kt

@@ -15,9 +15,7 @@ import me.ash.reader.data.source.AppNetworkDataSource
 import me.ash.reader.data.source.OpmlLocalDataSource
 import me.ash.reader.data.source.ReaderDatabase
 import me.ash.reader.data.source.RssNetworkDataSource
-import me.ash.reader.ui.ext.DataStoreKeys
+import me.ash.reader.ui.ext.*
-import me.ash.reader.ui.ext.dataStore
-import me.ash.reader.ui.ext.put
 import javax.inject.Inject
 
 @HiltAndroidApp
@@ -99,7 +97,12 @@ class App : Application(), Configuration.Provider {
     }
 
     private suspend fun checkUpdate() {
-        appRepository.checkUpdate()
+        applicationContext.getLatestApk().let {
+            if (it.exists()) {
+                it.del()
+            }
+        }
+        appRepository.checkUpdate(showToast = false)
     }
 
     override fun getWorkManagerConfiguration(): Configuration =

app/src/main/java/me/ash/reader/data/repository/AppRepository.kt

@@ -5,12 +5,17 @@ import android.util.Log
 import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.emptyFlow
 import kotlinx.coroutines.withContext
 import me.ash.reader.R
 import me.ash.reader.data.entity.toVersion
 import me.ash.reader.data.module.ApplicationScope
 import me.ash.reader.data.module.DispatcherIO
+import me.ash.reader.data.module.DispatcherMain
 import me.ash.reader.data.source.AppNetworkDataSource
+import me.ash.reader.data.source.Download
+import me.ash.reader.data.source.downloadToFileWithProgress
 import me.ash.reader.ui.ext.*
 import javax.inject.Inject
 
@@ -22,11 +27,28 @@ class AppRepository @Inject constructor(
     private val applicationScope: CoroutineScope,
     @DispatcherIO
     private val dispatcherIO: CoroutineDispatcher,
+    @DispatcherMain
+    private val dispatcherMain: CoroutineDispatcher,
 ) {
-    suspend fun checkUpdate(): Boolean = withContext(dispatcherIO) {
+    suspend fun checkUpdate(showToast: Boolean = true): Boolean? = withContext(dispatcherIO) {
         try {
-            val latest =
+            val response =
                 appNetworkDataSource.getReleaseLatest(context.getString(R.string.update_link))
+            when {
+                response.code() == 403 -> {
+                    withContext(dispatcherMain) {
+                        if (showToast) context.showToast(context.getString(R.string.rate_limit))
+                    }
+                    return@withContext null
+                }
+                response.body() == null -> {
+                    withContext(dispatcherMain) {
+                        if (showToast) context.showToast(context.getString(R.string.check_failure))
+                    }
+                    return@withContext null
+                }
+            }
+            val latest = response.body()!!
             val latestVersion = latest.tag_name.toVersion()
 //            val latestVersion = "0.7.3".toVersion()
             val skipVersion = context.skipVersionNumber.toVersion()
@@ -60,7 +82,26 @@ class AppRepository @Inject constructor(
         } catch (e: Exception) {
             e.printStackTrace()
             Log.e("RLog", "checkUpdate: ${e.message}")
-            false
+            withContext(dispatcherMain) {
+                if (showToast) context.showToast(context.getString(R.string.check_failure))
+            }
+            null
         }
     }
+
+    suspend fun downloadFile(url: String): Flow<Download> =
+        withContext(dispatcherIO) {
+            Log.i("RLog", "downloadFile start: $url")
+            try {
+                return@withContext appNetworkDataSource.downloadFile(url)
+                    .downloadToFileWithProgress(context.getLatestApk())
+            } catch (e: Exception) {
+                e.printStackTrace()
+                Log.e("RLog", "downloadFile: ${e.message}")
+                withContext(dispatcherMain) {
+                    context.showToast(context.getString(R.string.download_failure))
+                }
+            }
+            emptyFlow()
+        }
 }

app/src/main/java/me/ash/reader/data/source/AppNetworkDataSource.kt

@@ -1,14 +1,33 @@
 package me.ash.reader.data.source
 
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.flowOn
 import me.ash.reader.data.entity.LatestRelease
+import okhttp3.ResponseBody
+import retrofit2.Response
 import retrofit2.Retrofit
 import retrofit2.converter.gson.GsonConverterFactory
 import retrofit2.http.GET
+import retrofit2.http.Streaming
 import retrofit2.http.Url
+import java.io.File
+
+sealed class Download {
+    object NotYet : Download()
+    data class Progress(val percent: Int) : Download()
+    data class Finished(val file: File) : Download()
+}
 
 interface AppNetworkDataSource {
     @GET
-    suspend fun getReleaseLatest(@Url url: String): LatestRelease
+    suspend fun getReleaseLatest(@Url url: String): Response<LatestRelease>
+
+    @GET
+    @Streaming
+    suspend fun downloadFile(@Url url: String): ResponseBody
 
     companion object {
         private var instance: AppNetworkDataSource? = null
@@ -24,4 +43,53 @@ interface AppNetworkDataSource {
             }
         }
     }
-}
+}
+
+fun ResponseBody.downloadToFileWithProgress(saveFile: File): Flow<Download> =
+    flow {
+        emit(Download.Progress(0))
+
+        // flag to delete file if download errors or is cancelled
+        var deleteFile = true
+
+        try {
+            byteStream().use { inputStream ->
+                saveFile.outputStream().use { outputStream ->
+                    val totalBytes = contentLength()
+                    val data = ByteArray(8_192)
+                    var progressBytes = 0L
+
+                    while (true) {
+                        val bytes = inputStream.read(data)
+
+                        if (bytes == -1) {
+                            break
+                        }
+
+                        outputStream.channel
+                        outputStream.write(data, 0, bytes)
+                        progressBytes += bytes
+
+                        emit(Download.Progress(percent = ((progressBytes * 100) / totalBytes).toInt()))
+                    }
+
+                    when {
+                        progressBytes < totalBytes ->
+                            throw Exception("missing bytes")
+                        progressBytes > totalBytes ->
+                            throw Exception("too many bytes")
+                        else ->
+                            deleteFile = false
+                    }
+                }
+            }
+
+            emit(Download.Finished(saveFile))
+        } finally {
+            // check if download was successful
+
+            if (deleteFile) {
+                saveFile.delete()
+            }
+        }
+    }.flowOn(Dispatchers.IO).distinctUntilChanged()

app/src/main/java/me/ash/reader/ui/ext/ContextExt.kt

@@ -3,9 +3,13 @@ package me.ash.reader.ui.ext
 import android.app.Activity
 import android.content.Context
 import android.content.ContextWrapper
+import android.content.Intent
+import android.util.Log
 import android.widget.Toast
+import androidx.core.content.FileProvider
 import me.ash.reader.data.entity.Version
 import me.ash.reader.data.entity.toVersion
+import java.io.File
 
 fun Context.findActivity(): Activity? = when (this) {
     is Activity -> this
@@ -18,6 +22,27 @@ fun Context.getCurrentVersion(): Version = packageManager
     .versionName
     .toVersion()
 
+fun Context.getLatestApk(): File = File(cacheDir, "latest.apk")
+
+fun Context.getFileProvider(): String = "${packageName}.fileprovider"
+
+fun Context.installLatestApk() {
+    try {
+        val contentUri = FileProvider.getUriForFile(this, getFileProvider(), getLatestApk())
+        val intent = Intent(Intent.ACTION_VIEW).apply {
+            addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+            addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+            setDataAndType(contentUri, "application/vnd.android.package-archive")
+        }
+        if (packageManager.queryIntentActivities(intent, 0).size > 0) {
+            startActivity(intent)
+        }
+    } catch (e: Throwable) {
+        e.printStackTrace()
+        Log.e("RLog", "installLatestApk: ${e.message}")
+    }
+}
+
 private var toast: Toast? = null
 
 fun Context.showToast(message: String?, duration: Int = Toast.LENGTH_SHORT) {

app/src/main/java/me/ash/reader/ui/ext/FileEXT.kt

@@ -0,0 +1,38 @@
+package me.ash.reader.ui.ext
+
+import java.io.BufferedReader
+import java.io.File
+import java.io.InputStream
+import java.io.InputStreamReader
+
+/**
+ * Convert [InputStream] to [String].
+ */
+fun InputStream.readString(): String =
+    BufferedReader(InputStreamReader(this)).useLines { lines ->
+        val results = StringBuilder()
+        lines.forEach { results.append(it) }
+        results.toString()
+    }
+
+/**
+ * Delete a file or directory.
+ */
+fun File.del() {
+    if (this.isFile) {
+        delete()
+        return
+    }
+    this.listFiles()?.forEach { it.del() }
+    delete()
+}
+
+fun File.mkDir() {
+    val dirArray = this.absolutePath.split("/".toRegex())
+    var pathTemp = ""
+    for (i in 1 until dirArray.size) {
+        pathTemp = "$pathTemp/${dirArray[i]}"
+        val newF = File("${dirArray[0]}$pathTemp")
+        if (!newF.exists()) newF.mkdir()
+    }
+}

app/src/main/java/me/ash/reader/ui/page/settings/SettingsPage.kt

@@ -15,6 +15,7 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.zIndex
+import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.navigation.NavHostController
 import kotlinx.coroutines.flow.map
 import me.ash.reader.R
@@ -33,9 +34,9 @@ import me.ash.reader.ui.theme.palette.onLight
 @Composable
 fun SettingsPage(
     navController: NavHostController,
+    updateViewModel: UpdateViewModel = hiltViewModel(),
 ) {
     val context = LocalContext.current
-    var updateDialogVisible by remember { mutableStateOf(false) }
     val skipVersion = context.dataStore.data
         .map { it[DataStoreKeys.SkipVersionNumber.key] ?: "" }
         .collectAsState(initial = "")
@@ -92,7 +93,9 @@ fun SettingsPage(
                                         contentDescription = stringResource(R.string.close),
                                     )
                                 },
-                            ) { updateDialogVisible = true }
+                            ) {
+                                updateViewModel.dispatch(UpdateViewAction.Show)
+                            }
                         }
                         Banner(
                             title = stringResource(R.string.in_coding),
@@ -148,8 +151,5 @@ fun SettingsPage(
         }
     )
 
-    UpdateDialog(
+    UpdateDialog()
-        visible = updateDialogVisible,
-        onDismissRequest = { updateDialogVisible = false },
-    )
 }

app/src/main/java/me/ash/reader/ui/page/settings/TipsAndSupport.kt

@@ -16,6 +16,7 @@ import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.rounded.ArrowBack
 import androidx.compose.material.icons.rounded.Balance
+import androidx.compose.material.icons.rounded.TipsAndUpdates
 import androidx.compose.material.icons.rounded.VolunteerActivism
 import androidx.compose.material3.*
 import androidx.compose.runtime.*
@@ -30,6 +31,7 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalView
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.navigation.NavHostController
@@ -50,13 +52,8 @@ fun TipsAndSupport(
     val context = LocalContext.current
     val view = LocalView.current
     val scope = rememberCoroutineScope()
-    val viewState = updateViewModel.viewState.collectAsStateValue()
-    val githubLink = stringResource(R.string.github_link)
-    val telegramLink = stringResource(R.string.telegram_link)
-    val checkingUpdates = stringResource(R.string.checking_updates)
-    val isLatestVersion = stringResource(R.string.is_latest_version)
-    val comingSoon = stringResource(R.string.coming_soon)
     var currentVersion by remember { mutableStateOf("") }
+    var clickTime by remember { mutableStateOf(System.currentTimeMillis() - 2000) }
     var pressAMP by remember { mutableStateOf(16f) }
     val animatedPress by animateFloatAsState(
         targetValue = pressAMP,
@@ -88,7 +85,16 @@ fun TipsAndSupport(
                         navController.popBackStack()
                     }
                 },
-                actions = {}
+                actions = {
+                    FeedbackIconButton(
+                        modifier = Modifier.size(20.dp),
+                        imageVector = Icons.Rounded.Balance,
+                        contentDescription = stringResource(R.string.open_source_licenses),
+                        tint = MaterialTheme.colorScheme.onSurface
+                    ) {
+                        context.showToast(context.getString(R.string.coming_soon))
+                    }
+                }
             )
         },
         content = {
@@ -110,21 +116,30 @@ fun TipsAndSupport(
                                     pressAMP = 16f
                                 },
                                 onTap = {
-                                    context.showToast(checkingUpdates)
+                                    if (System.currentTimeMillis() - clickTime > 2000) {
-                                    scope.launch {
+                                        clickTime = System.currentTimeMillis()
-                                        updateViewModel.dispatch(
+                                        context.showToast(context.getString(R.string.checking_updates))
-                                            UpdateViewAction.CheckUpdate(
+                                        scope.launch {
-                                                {
+                                            updateViewModel.dispatch(
-                                                    context.dataStore.put(
+                                                UpdateViewAction.CheckUpdate(
-                                                        DataStoreKeys.SkipVersionNumber,
+                                                    {
-                                                        ""
+                                                        context.dataStore.put(
-                                                    )
+                                                            DataStoreKeys.SkipVersionNumber,
-                                                },
+                                                            ""
-                                                {
+                                                        )
-                                                    if (!it) context.showToast(isLatestVersion)
+                                                    },
-                                                }
+                                                    {
+                                                        if (!it) {
+                                                            context.showToast(
+                                                                context.getString(R.string.is_latest_version)
+                                                            )
+                                                        }
+                                                    }
+                                                )
                                             )
-                                        )
+                                        }
+                                    } else {
+                                        clickTime = System.currentTimeMillis()
                                     }
                                 }
                             )
@@ -186,22 +201,7 @@ fun TipsAndSupport(
                         ) {
                             view.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP)
                             view.playSoundEffect(SoundEffectConstants.CLICK)
-                            context.showToast(comingSoon)
+                            context.showToast(context.getString(R.string.coming_soon))
-                        })
-                        Spacer(modifier = Modifier.width(16.dp))
-
-                        // Telegram
-                        RoundIconButton(RoundIconButtonType.Telegram(
-                            backgroundColor = MaterialTheme.colorScheme.primaryContainer alwaysLight true,
-                        ) {
-                            view.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP)
-                            view.playSoundEffect(SoundEffectConstants.CLICK)
-                            context.startActivity(
-                                Intent(
-                                    Intent.ACTION_VIEW,
-                                    Uri.parse(telegramLink)
-                                )
-                            )
                         })
                         Spacer(modifier = Modifier.width(16.dp))
 
@@ -214,19 +214,34 @@ fun TipsAndSupport(
                             context.startActivity(
                                 Intent(
                                     Intent.ACTION_VIEW,
-                                    Uri.parse(githubLink)
+                                    Uri.parse(context.getString(R.string.github_link))
                                 )
                             )
                         })
                         Spacer(modifier = Modifier.width(16.dp))
 
-                        // License
+                        // Telegram
-                        RoundIconButton(RoundIconButtonType.License(
+                        RoundIconButton(RoundIconButtonType.Telegram(
+                            backgroundColor = MaterialTheme.colorScheme.primaryContainer alwaysLight true,
+                        ) {
+                            view.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP)
+                            view.playSoundEffect(SoundEffectConstants.CLICK)
+                            context.startActivity(
+                                Intent(
+                                    Intent.ACTION_VIEW,
+                                    Uri.parse(context.getString(R.string.telegram_link))
+                                )
+                            )
+                        })
+                        Spacer(modifier = Modifier.width(16.dp))
+
+                        // Help
+                        RoundIconButton(RoundIconButtonType.Help(
                             backgroundColor = MaterialTheme.colorScheme.secondaryContainer alwaysLight true,
                         ) {
                             view.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP)
                             view.playSoundEffect(SoundEffectConstants.CLICK)
-                            context.showToast(comingSoon)
+                            context.showToast(context.getString(R.string.coming_soon))
                         })
                     }
                     Spacer(modifier = Modifier.height(48.dp))
@@ -235,10 +250,7 @@ fun TipsAndSupport(
         }
     )
 
-    UpdateDialog(
+    UpdateDialog()
-        visible = viewState.updateDialogVisible,
-        onDismissRequest = { updateViewModel.dispatch(UpdateViewAction.Hide) },
-    )
 }
 
 @Immutable
@@ -247,6 +259,7 @@ sealed class RoundIconButtonType(
     val iconVector: ImageVector? = null,
     val descResource: Int? = null,
     val descString: String? = null,
+    open val size: Dp = 24.dp,
     open val offset: Modifier = Modifier.offset(),
     open val backgroundColor: Color = Color.Unspecified,
     open val onClick: () -> Unit = {},
@@ -263,6 +276,18 @@ sealed class RoundIconButtonType(
         onClick = onClick,
     )
 
+    @Immutable
+    data class GitHub(
+        val desc: String = "GitHub",
+        override val backgroundColor: Color,
+        override val onClick: () -> Unit = {},
+    ) : RoundIconButtonType(
+        iconResource = R.drawable.ic_github,
+        descString = desc,
+        backgroundColor = backgroundColor,
+        onClick = onClick,
+    )
+
     @Immutable
     data class Telegram(
         val desc: String = "Telegram",
@@ -277,24 +302,13 @@ sealed class RoundIconButtonType(
     )
 
     @Immutable
-    data class GitHub(
+    data class Help(
-        val desc: String = "GitHub",
+        val desc: Int = R.string.help,
+        override val offset: Modifier = Modifier.offset(x = (3).dp),
         override val backgroundColor: Color,
         override val onClick: () -> Unit = {},
     ) : RoundIconButtonType(
-        iconResource = R.drawable.ic_github,
+        iconVector = Icons.Rounded.TipsAndUpdates,
-        descString = desc,
-        backgroundColor = backgroundColor,
-        onClick = onClick,
-    )
-
-    @Immutable
-    data class License(
-        val desc: Int = R.string.open_source_licenses,
-        override val backgroundColor: Color,
-        override val onClick: () -> Unit = {},
-    ) : RoundIconButtonType(
-        iconVector = Icons.Rounded.Balance,
         descResource = desc,
         backgroundColor = backgroundColor,
         onClick = onClick,
@@ -313,9 +327,9 @@ private fun RoundIconButton(type: RoundIconButtonType) {
         onClick = { type.onClick() }
     ) {
         when (type) {
-            is RoundIconButtonType.Sponsor, is RoundIconButtonType.License -> {
+            is RoundIconButtonType.Sponsor, is RoundIconButtonType.Help -> {
                 Icon(
-                    modifier = type.offset,
+                    modifier = type.offset.size(type.size),
                     imageVector = type.iconVector!!,
                     contentDescription = stringResource(type.descResource!!),
                     tint = MaterialTheme.colorScheme.onSurface alwaysLight true,
@@ -323,7 +337,7 @@ private fun RoundIconButton(type: RoundIconButtonType) {
             }
             is RoundIconButtonType.GitHub, is RoundIconButtonType.Telegram -> {
                 Icon(
-                    modifier = type.offset,
+                    modifier = type.offset.size(type.size),
                     painter = painterResource(type.iconResource!!),
                     contentDescription = type.descString,
                     tint = MaterialTheme.colorScheme.onSurface alwaysLight true,

app/src/main/java/me/ash/reader/ui/page/settings/UpdateDialog.kt

@@ -1,6 +1,13 @@
 package me.ash.reader.ui.page.settings
 
+import android.Manifest
 import android.annotation.SuppressLint
+import android.content.Intent
+import android.net.Uri
+import android.provider.Settings
+import android.util.Log
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.height
@@ -22,26 +29,25 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
 import com.google.accompanist.pager.ExperimentalPagerApi
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import me.ash.reader.R
+import me.ash.reader.data.source.Download
 import me.ash.reader.ui.component.Dialog
-import me.ash.reader.ui.ext.DataStoreKeys
+import me.ash.reader.ui.ext.*
-import me.ash.reader.ui.ext.dataStore
-import me.ash.reader.ui.ext.put
 
 @SuppressLint("FlowOperatorInvokedInComposition")
 @OptIn(ExperimentalPagerApi::class)
 @Composable
 fun UpdateDialog(
-    modifier: Modifier = Modifier,
+    updateViewModel: UpdateViewModel = hiltViewModel(),
-    visible: Boolean = false,
-    onDismissRequest: () -> Unit = {},
-    onConfirm: (String) -> Unit = {},
 ) {
     val context = LocalContext.current
+    val viewState = updateViewModel.viewState.collectAsStateValue()
+    val downloadState = viewState.downloadFlow.collectAsState(initial = Download.NotYet).value
     val scope = rememberCoroutineScope { Dispatchers.IO }
     val newVersionNumber = context.dataStore.data
         .map { it[DataStoreKeys.NewVersionNumber.key] ?: "" }
@@ -55,17 +61,38 @@ fun UpdateDialog(
         .map { it[DataStoreKeys.NewVersionLog.key] ?: "" }
         .collectAsState(initial = "")
         .value
-    val newVersionSize = context.dataStore.data
+    val newVersionSize = " " + context.dataStore.data
         .map { it[DataStoreKeys.NewVersionSize.key] ?: 0 }
         .map { it / 1024f / 1024f }
         .map { if (it > 0f) " ${String.format("%.2f", it)} MB" else "" }
         .collectAsState(initial = 0)
         .value
 
+    val settings = rememberLauncherForActivityResult(
+        ActivityResultContracts.StartActivityForResult()
+    ) {
+        context.installLatestApk()
+    }
+
+    val launcher = rememberLauncherForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { result ->
+        if (result) {
+            context.installLatestApk()
+        } else {
+            settings.launch(
+                Intent(
+                    Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES,
+                    Uri.parse("package:${context.packageName}"),
+                ),
+            )
+        }
+    }
+
     Dialog(
-        modifier = modifier.heightIn(max = 400.dp),
+        modifier = Modifier.heightIn(max = 400.dp),
-        visible = visible,
+        visible = viewState.updateDialogVisible,
-        onDismissRequest = onDismissRequest,
+        onDismissRequest = { updateViewModel.dispatch(UpdateViewAction.Hide) },
         icon = {
             Icon(
                 imageVector = Icons.Rounded.Update,
@@ -79,7 +106,7 @@ fun UpdateDialog(
                 Text(text = stringResource(R.string.change_log))
                 Spacer(modifier = Modifier.height(16.dp))
                 Text(
-                    text = newVersionPublishDate,
+                    text = "$newVersionPublishDate$newVersionSize",
                     color = MaterialTheme.colorScheme.outline.copy(alpha = 0.7f),
                     style = MaterialTheme.typography.bodyMedium,
                 )
@@ -97,19 +124,47 @@ fun UpdateDialog(
         confirmButton = {
             TextButton(
                 onClick = {
+                    if (downloadState !is Download.Progress) {
+                        updateViewModel.dispatch(
+                            UpdateViewAction.DownloadUpdate(
+                                url = context.newVersionDownloadUrl,
+                            )
+                        )
+                    }
                 }
             ) {
-                Text(text = stringResource(R.string.update) + newVersionSize)
+                Text(
+                    text = stringResource(R.string.update) + when (downloadState) {
+                        is Download.NotYet -> ""
+                        is Download.Progress -> " ${downloadState.percent}%"
+                        is Download.Finished -> {
+                            if (context.packageManager.canRequestPackageInstalls()) {
+                                Log.i(
+                                    "RLog",
+                                    "Download.Finished: ${downloadState.file.absolutePath}"
+                                )
+                                context.installLatestApk()
+                            } else {
+                                launcher.launch(Manifest.permission.REQUEST_INSTALL_PACKAGES)
+                            }
+                            ""
+                        }
+                    }
+                )
             }
         },
         dismissButton = {
-            TextButton(onClick = {
+            if (downloadState !is Download.Progress) {
-                scope.launch {
+                TextButton(
-                    context.dataStore.put(DataStoreKeys.SkipVersionNumber, newVersionNumber)
+                    onClick = {
-                    onDismissRequest()
+                        scope.launch {
+                            context.dataStore.put(DataStoreKeys.SkipVersionNumber, newVersionNumber)
+                            updateViewModel.dispatch(UpdateViewAction.Hide)
+                        }
+                    }
+                ) {
+                    Text(text = stringResource(R.string.skip_this_version))
                 }
-            }) {
-                Text(text = stringResource(R.string.skip_this_version))
             }
         },
     )

app/src/main/java/me/ash/reader/ui/page/settings/UpdateViewModel.kt

@@ -3,12 +3,10 @@ package me.ash.reader.ui.page.settings
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
-import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.*
-import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.flow.asStateFlow
-import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import me.ash.reader.data.repository.AppRepository
+import me.ash.reader.data.source.Download
 import javax.inject.Inject
 
 @HiltViewModel
@@ -26,6 +24,7 @@ class UpdateViewModel @Inject constructor(
                 action.preProcessor,
                 action.postProcessor
             )
+            is UpdateViewAction.DownloadUpdate -> downloadUpdate(action.url)
         }
     }
 
@@ -36,8 +35,10 @@ class UpdateViewModel @Inject constructor(
         viewModelScope.launch {
             preProcessor()
             appRepository.checkUpdate().let {
-                changeUpdateDialogVisible(it)
+                it?.let {
-                postProcessor(it)
+                    changeUpdateDialogVisible(it)
+                    postProcessor(it)
+                }
             }
         }
     }
@@ -49,10 +50,26 @@ class UpdateViewModel @Inject constructor(
             )
         }
     }
+
+    private fun downloadUpdate(url: String) {
+        viewModelScope.launch {
+            _viewState.update {
+                it.copy(
+                    downloadFlow = flow { emit(Download.Progress(0)) }
+                )
+            }
+            _viewState.update {
+                it.copy(
+                    downloadFlow = appRepository.downloadFile(url)
+                )
+            }
+        }
+    }
 }
 
 data class UpdateViewState(
     val updateDialogVisible: Boolean = false,
+    val downloadFlow: Flow<Download> = emptyFlow(),
 )
 
 sealed class UpdateViewAction {
@@ -63,4 +80,8 @@ sealed class UpdateViewAction {
         val preProcessor: suspend () -> Unit = {},
         val postProcessor: suspend (Boolean) -> Unit = {}
     ) : UpdateViewAction()
+
+    data class DownloadUpdate(
+        val url: String,
+    ) : UpdateViewAction()
 }

app/src/main/res/values-zh-rCN/strings.xml

@@ -117,4 +117,8 @@
     <string name="skip_this_version">跳过这个版本</string>
     <string name="checking_updates">正在检查更新…</string>
     <string name="is_latest_version">已是最新版本</string>
+    <string name="check_failure">检查失败</string>
+    <string name="download_failure">下载失败</string>
+    <string name="rate_limit">请求速率受限</string>
+    <string name="help">帮助</string>
 </resources>

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

@@ -117,4 +117,8 @@
     <string name="skip_this_version">Skip This Version</string>
     <string name="checking_updates">Checking for updates…</string>
     <string name="is_latest_version">This is the latest version</string>
+    <string name="check_failure">Check failure</string>
+    <string name="download_failure">Download failure</string>
+    <string name="rate_limit">The request rate is limited</string>
+    <string name="help">Help</string>
 </resources>

app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+    <cache-path name="cache" path="."/>
+</paths>