[android] Automatic update fetcher and APK installer (#2987)

This might need a test run before merging. Just to make sure.

Co-authored-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2987
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Co-authored-by: kleidis <kleidis1@protonmail.com>
Co-committed-by: kleidis <kleidis1@protonmail.com>

src/android/app/src/main/AndroidManifest.xml

@@ -29,8 +29,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
-    <uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
-    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" android:maxSdkVersion="30" />
 
     <application
         android:name="org.yuzu.yuzu_emu.YuzuApplication"
@@ -110,5 +109,15 @@ SPDX-License-Identifier: GPL-3.0-or-later
             </intent-filter>
         </provider>
 
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.provider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
+
     </application>
 </manifest>

src/android/app/src/main/java/org/yuzu/yuzu_emu/NativeLibrary.kt

@@ -222,6 +222,11 @@ object NativeLibrary {
      */
     external fun getUpdateUrl(version: String): String
 
+    /**
+     * Return the URL to download the APK for the given version
+     */
+    external fun getUpdateApkUrl(version: String, packageId: String): String
+
     /**
      * Returns whether the update checker is enabled through CMAKE options.
      */

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SettingsItem.kt

@@ -762,6 +762,7 @@ abstract class SettingsItem(
                 SwitchSetting(
                     BooleanSetting.ENABLE_UPDATE_CHECKS,
                     titleId = R.string.enable_update_checks,
+                    descriptionId = R.string.enable_update_checks_description,
                 )
             )
             put(

src/android/app/src/main/java/org/yuzu/yuzu_emu/ui/main/MainActivity.kt

@@ -53,8 +53,16 @@ import androidx.core.content.edit
 import org.yuzu.yuzu_emu.activities.EmulationActivity
 import kotlin.text.compareTo
 import androidx.core.net.toUri
+import com.google.android.material.progressindicator.LinearProgressIndicator
+import com.google.android.material.textview.MaterialTextView
 import org.yuzu.yuzu_emu.features.settings.model.BooleanSetting
 import org.yuzu.yuzu_emu.YuzuApplication
+import org.yuzu.yuzu_emu.updater.APKDownloader
+import org.yuzu.yuzu_emu.updater.APKInstaller
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 class MainActivity : AppCompatActivity(), ThemeProvider {
     private lateinit var binding: ActivityMainBinding
@@ -186,9 +194,7 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
             .setTitle(R.string.update_available)
             .setMessage(getString(R.string.update_available_description, version))
             .setPositiveButton(android.R.string.ok) { _, _ ->
-                val url = NativeLibrary.getUpdateUrl(version)
+                downloadAndInstallUpdate(version)
-                val intent = Intent(Intent.ACTION_VIEW, url.toUri())
-                startActivity(intent)
             }
             .setNeutralButton(R.string.cancel) { dialog, _ ->
                 dialog.dismiss()
@@ -201,6 +207,87 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
             .show()
     }
 
+    private fun downloadAndInstallUpdate(version: String) {
+        CoroutineScope(Dispatchers.IO).launch {
+            val packageId = applicationContext.packageName
+            val apkUrl = NativeLibrary.getUpdateApkUrl(version, packageId)
+            val apkFile = File(cacheDir, "update-$version.apk")
+
+            withContext(Dispatchers.Main) {
+                showDownloadProgressDialog()
+            }
+
+            val downloader = APKDownloader(apkUrl, apkFile)
+            downloader.download(
+                onProgress = { progress ->
+                    runOnUiThread {
+                        updateDownloadProgress(progress)
+                    }
+                },
+                onComplete = { success ->
+                    runOnUiThread {
+                        dismissDownloadProgressDialog()
+                        if (success) {
+                            val installer = APKInstaller(this@MainActivity)
+                            installer.install(
+                                apkFile,
+                                onComplete = {
+                                    Toast.makeText(
+                                        this@MainActivity,
+                                        R.string.update_installed_successfully,
+                                        Toast.LENGTH_LONG
+                                    ).show()
+                                },
+                                onFailure = { exception ->
+                                    Toast.makeText(
+                                        this@MainActivity,
+                                        getString(R.string.update_install_failed, exception.message),
+                                        Toast.LENGTH_LONG
+                                    ).show()
+                                }
+                            )
+                        } else {
+                            Toast.makeText(
+                                this@MainActivity,
+                                getString(R.string.update_download_failed) + "\n\nURL: $apkUrl",
+                                Toast.LENGTH_LONG
+                            ).show()
+                        }
+                    }
+                }
+            )
+        }
+    }
+
+    private var progressDialog: androidx.appcompat.app.AlertDialog? = null
+    private var progressBar: LinearProgressIndicator? = null
+    private var progressMessage: MaterialTextView? = null
+
+    private fun showDownloadProgressDialog() {
+        val progressView = layoutInflater.inflate(R.layout.dialog_download_progress, null)
+        progressBar = progressView.findViewById(R.id.download_progress_bar)
+        progressMessage = progressView.findViewById(R.id.download_progress_message)
+
+        progressDialog = MaterialAlertDialogBuilder(this)
+            .setTitle(R.string.downloading_update)
+            .setView(progressView)
+            .setCancelable(false)
+            .create()
+        progressDialog?.show()
+    }
+
+    private fun updateDownloadProgress(progress: Int) {
+        progressBar?.progress = progress
+        progressMessage?.text = "$progress%"
+    }
+
+    private fun dismissDownloadProgressDialog() {
+        progressDialog?.dismiss()
+        progressDialog = null
+        progressBar = null
+        progressMessage = null
+    }
+
 
     fun displayMultiplayerDialog() {
         val dialog = NetPlayDialog(this)

src/android/app/src/main/java/org/yuzu/yuzu_emu/updater/APKDownloader.kt

@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package org.yuzu.yuzu_emu.updater
+
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Response
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
+
+class APKDownloader(private val url: String, private val outputFile: File) {
+
+    fun download(onProgress: (Int) -> Unit, onComplete: (Boolean) -> Unit) {
+        val client = OkHttpClient()
+        val request = Request.Builder().url(url).build()
+
+        client.newCall(request).enqueue(object : Callback {
+            override fun onFailure(call: Call, e: IOException) {
+                e.printStackTrace()
+                onComplete(false)
+            }
+
+            override fun onResponse(call: Call, response: Response) {
+                if (response.isSuccessful) {
+                    response.body?.let { body ->
+                        val contentLength = body.contentLength()
+                        try {
+                            val inputStream = body.byteStream()
+                            val outputStream = FileOutputStream(outputFile)
+                            val buffer = ByteArray(4096)
+                            var bytesRead: Int
+                            var totalBytesRead: Long = 0
+
+                            while (inputStream.read(buffer).also { bytesRead = it } != -1) {
+                                outputStream.write(buffer, 0, bytesRead)
+                                totalBytesRead += bytesRead
+                                val progress = (totalBytesRead * 100 / contentLength).toInt()
+                                onProgress(progress)
+                            }
+                            outputStream.flush()
+                            outputStream.close()
+                            inputStream.close()
+                            onComplete(true)
+                        } catch (e: IOException) {
+                            e.printStackTrace()
+                            onComplete(false)
+                        }
+                    } ?: run {
+                        onComplete(false)
+                    }
+                } else {
+                    onComplete(false)
+                }
+            }
+        })
+    }
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/updater/APKInstaller.kt

@@ -0,0 +1,41 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package org.yuzu.yuzu_emu.updater
+
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.net.Uri
+import androidx.core.content.FileProvider
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+import java.io.File
+
+class APKInstaller(private val context: Context) {
+
+    fun install(apkFile: File, onComplete: () -> Unit, onFailure: (Exception) -> Unit) {
+        try {
+            val apkUri: Uri = FileProvider.getUriForFile(
+                context,
+                context.applicationContext.packageName + ".provider",
+                apkFile
+            )
+            val intent = Intent(Intent.ACTION_VIEW)
+            intent.setDataAndType(apkUri, "application/vnd.android.package-archive")
+            intent.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_ACTIVITY_NEW_TASK
+            context.startActivity(intent)
+
+            GlobalScope.launch {
+                val receiver = AppInstallReceiver(onComplete, onFailure)
+                context.registerReceiver(receiver, IntentFilter().apply {
+                    addAction(Intent.ACTION_PACKAGE_ADDED)
+                    addAction(Intent.ACTION_PACKAGE_REPLACED)
+                    addDataScheme("package")
+                })
+            }
+        } catch (e: Exception) {
+            onFailure(e)
+        }
+    }
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/updater/AppInstallReceiver.kt

@@ -0,0 +1,30 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package org.yuzu.yuzu_emu.updater
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.util.Log
+
+class AppInstallReceiver(
+    private val onComplete: () -> Unit,
+    private val onFailure: (Exception) -> Unit
+) : BroadcastReceiver() {
+
+    override fun onReceive(context: Context, intent: Intent) {
+        val packageName = intent.data?.schemeSpecificPart
+        when (intent.action) {
+            Intent.ACTION_PACKAGE_ADDED, Intent.ACTION_PACKAGE_REPLACED -> {
+                Log.i("AppInstallReceiver", "Package installed or updated: $packageName")
+                onComplete()
+                context.unregisterReceiver(this)
+            }
+            else -> {
+                onFailure(Exception("Installation failed for package: $packageName"))
+                context.unregisterReceiver(this)
+            }
+        }
+    }
+}

src/android/app/src/main/jni/native.cpp

@@ -1613,6 +1613,37 @@ JNIEXPORT jstring JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_getUpdateUrl(
     env->ReleaseStringUTFChars(version, version_str);
     return env->NewStringUTF(url.c_str());
 }
+
+JNIEXPORT jstring JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_getUpdateApkUrl(
+        JNIEnv* env,
+        jobject obj,
+        jstring version,
+        jstring packageId) {
+    const char* version_str = env->GetStringUTFChars(version, nullptr);
+    const char* package_id_str = env->GetStringUTFChars(packageId, nullptr);
+
+    std::string variant;
+    std::string package_id(package_id_str);
+
+    if (package_id.find("dev.legacy.eden_emulator") != std::string::npos) {
+        variant = "legacy";
+    } else if (package_id.find("com.miHoYo.Yuanshen") != std::string::npos) {
+        variant = "optimized";
+    } else {
+        variant = "standard";
+    }
+
+    const std::string apk_filename = fmt::format("Eden-Android-{}-{}.apk", version_str, variant);
+    const std::string url = fmt::format("{}/{}/releases/download/{}/{}",
+        std::string{Common::g_build_auto_update_website},
+        std::string{Common::g_build_auto_update_repo},
+        version_str,
+        apk_filename);
+
+    env->ReleaseStringUTFChars(version, version_str);
+    env->ReleaseStringUTFChars(packageId, package_id_str);
+    return env->NewStringUTF(url.c_str());
+}
 #endif
 
 JNIEXPORT jstring JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_getBuildVersion(

src/android/app/src/main/res/layout/dialog_download_progress.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/download_progress_message"
+        style="@style/TextAppearance.Material3.BodyMedium"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:text="0%"
+        android:textAlignment="center"
+        android:textSize="18sp"
+        android:textStyle="bold" />
+
+    <com.google.android.material.progressindicator.LinearProgressIndicator
+        android:id="@+id/download_progress_bar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="100"
+        android:progress="0"
+        app:indicatorColor="?attr/colorPrimary"
+        app:trackColor="?attr/colorSurfaceVariant"
+        app:trackCornerRadius="4dp"
+        app:trackThickness="8dp" />
+
+</LinearLayout>

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

@@ -271,9 +271,14 @@
     <string name="folder">Folder</string>
     <string name="dont_show_again">Don\'t Show Again</string>
     <string name="add_directory_success">New game directory added successfully </string>
-    <string name="enable_update_checks">Check for updates on app startup.</string>
+    <string name="enable_update_checks">Check for Updates</string>
+    <string name="enable_update_checks_description">Check for updates on launch, and optionally download and install the new update.</string>
     <string name="update_available">Update Available</string>
     <string name="update_available_description">A new version is available: %1$s\n\nWould you like to download it?</string>
+    <string name="downloading_update">Downloading Update</string>
+    <string name="update_download_failed">Failed to download update</string>
+    <string name="update_installed_successfully">Update installed successfully</string>
+    <string name="update_install_failed">Failed to install update: %1$s</string>
     <string name="home_search">Search</string>
     <string name="home_settings">Settings</string>
     <string name="empty_gamelist">No files were found or no game directory has been selected yet.</string>

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

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- this is required to share files in the app's internal storage -->
+    <cache-path name="apk_cache" path="." />
+    <external-cache-path name="external_apk_cache" path="." />
+    <files-path name="files" path="." />
+    <external-files-path name="external_files" path="." />
+</paths>