Add v9.0: Auto-update system with Gitea integration

- Implement UpdateManager to check Gitea releases for new versions
- Add update dialogs with mandatory/optional update support
- Integrate DownloadManager for APK downloads
- Add FileProvider configuration for app installation
- Support update-manifest.json for version control enforcement
- Add comprehensive update strings and error handling
- Include gradlew executable permissions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -82,6 +82,44 @@ chmod +x build_apk.sh
 ./build_apk.sh
 ```
 
+## 🔄 Control de Instalaciones y Actualizaciones
+
+StreamPlayer ahora consulta automáticamente las releases públicas del repositorio Gitea y puede forzar o sugerir actualizaciones directamente desde la app. Para aprovecharlo:
+
+1. Ejecuta un build nuevo incrementando `versionCode`/`versionName` en `app/build.gradle`.
+2. Crea una release en Gitea asignando un tag como `v9.1` y sube el APK.
+3. Adjunta un archivo `update-manifest.json` en la misma release (puedes partir de `release/update-manifest.example.json`).
+
+### Formato de `update-manifest.json`
+
+```json
+{
+  "versionCode": 91000,
+  "versionName": "9.1.0",
+  "minSupportedVersionCode": 90000,
+  "forceUpdate": false,
+  "downloadUrl": "https://gitea.cbcren.online/renato97/app/releases/download/v9.1/StreamPlayer-v9.1.apk",
+  "fileName": "StreamPlayer-v9.1.apk",
+  "sizeBytes": 12345678,
+  "notes": "Novedades destacadas que aparecerán en el diálogo dentro de la app"
+}
+```
+
+- `versionCode` / `versionName`: deben coincidir con el APK publicado.
+- `minSupportedVersionCode`: define desde qué versión mínima se permite seguir usando la app (ideal para bloquear instalaciones antiguas).
+- `forceUpdate`: si es `true` la app mostrará un diálogo sin opción de omitir.
+- `downloadUrl` / `fileName`: apuntan al asset `.apk` publicado en Gitea (puede ser el enlace de descarga directo).
+- `notes`: texto libre mostrado en el diálogo dentro de la app; si lo omitís se usará el cuerpo de la release.
+
+Si por algún motivo olvidas subir el manifiesto, la app igualmente tomará el primer asset `.apk` de la release, pero no podrá forzar versiones mínimas.
+
+### Flujo dentro de la app
+
+- Cada vez que se abre `MainActivity` se consulta `https://gitea.cbcren.online/api/v1/repos/renato97/app/releases/latest`.
+- Si `versionCode` del servidor es mayor al instalado se muestra un diálogo para actualizar; el usuario puede abrir la release o descargarla directamente.
+- Si `minSupportedVersionCode` es mayor al instalado la app bloqueará el uso hasta actualizar, cumpliendo con el requerimiento de controlar instalaciones.
+- La descarga se gestiona con `DownloadManager` y, una vez completada, se lanza el instalador usando FileProvider.
+
 ## 📱 Estructura del Proyecto
 
 ```
@@ -146,8 +184,8 @@ String[] GOOGLE_DNS = {"8.8.8.8", "8.8.4.4"};
 | `applicationId` | `com.streamplayer` |
 | `minSdk` | 21 |
 | `targetSdk` | 33 |
-| `versionCode` | 1 |
+| `versionCode` | 90000 |
-| `versionName` | "1.0" |
+| `versionName` | "9.0.0" |
 | `compileSdk` | 33 |
 
 ## 🔐 Permisos y Seguridad

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "com.streamplayer"
         minSdk 21
         targetSdk 33
-        versionCode 1
+        versionCode 90000
-        versionName "1.0"
+        versionName "9.0.0"
     }
 
     buildTypes {
@@ -30,6 +30,10 @@ android {
         abortOnError = false
     }
 
+    buildFeatures {
+        buildConfig = true
+    }
+
     packaging {
         resources {
             excludes += 'META-INF/com.android.tools/proguard/coroutines.pro'

app/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
     <uses-feature
         android:name="android.software.leanback"
         android:required="false" />
@@ -22,6 +23,16 @@
         android:theme="@style/Theme.StreamPlayer"
         android:usesCleartextTraffic="true">
 
+        <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>
+
         <activity
             android:name=".PlayerActivity"
             android:exported="false"

app/src/main/java/com/streamplayer/MainActivity.java

@@ -1,10 +1,13 @@
 package com.streamplayer;
 
+import android.app.AlertDialog;
 import android.content.Intent;
+import android.net.Uri;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.ProgressBar;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.recyclerview.widget.GridLayoutManager;
@@ -35,6 +38,8 @@ public class MainActivity extends AppCompatActivity {
     private final List<EventItem> cachedEvents = new ArrayList<>();
     private List<SectionEntry> sections;
     private SectionEntry currentSection;
+    private UpdateManager updateManager;
+    private AlertDialog updateDialog;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -60,6 +65,45 @@ public class MainActivity extends AppCompatActivity {
         sectionList.setAdapter(sectionAdapter);
 
         selectSection(0);
+
+        updateManager = new UpdateManager(this);
+        updateManager.checkForUpdates(new UpdateManager.UpdateCallback() {
+            @Override
+            public void onUpdateAvailable(UpdateManager.UpdateInfo info) {
+                handleUpdateInfo(info);
+            }
+
+            @Override
+            public void onUpToDate() {
+                // Nothing to do.
+            }
+
+            @Override
+            public void onError(String message) {
+                Toast.makeText(MainActivity.this,
+                        getString(R.string.update_error_checking, message),
+                        Toast.LENGTH_SHORT).show();
+            }
+        });
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        if (updateManager != null) {
+            updateManager.resumePendingInstall(this);
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (updateDialog != null && updateDialog.isShowing()) {
+            updateDialog.dismiss();
+        }
+        if (updateManager != null) {
+            updateManager.release();
+        }
     }
 
     private void selectSection(int index) {
@@ -151,6 +195,87 @@ public class MainActivity extends AppCompatActivity {
         startActivity(intent);
     }
 
+    private void handleUpdateInfo(UpdateManager.UpdateInfo info) {
+        if (info == null) {
+            return;
+        }
+        boolean forceUpdate = info.isMandatory(BuildConfig.VERSION_CODE);
+        showUpdateDialog(info, forceUpdate);
+    }
+
+    private void showUpdateDialog(UpdateManager.UpdateInfo info, boolean mandatory) {
+        if (isFinishing()) {
+            return;
+        }
+        if (updateDialog != null && updateDialog.isShowing()) {
+            updateDialog.dismiss();
+        }
+        AlertDialog.Builder builder = new AlertDialog.Builder(this)
+                .setTitle(mandatory ? R.string.update_required_title : R.string.update_available_title)
+                .setMessage(buildUpdateMessage(info))
+                .setPositiveButton(R.string.update_action_download,
+                        (dialog, which) -> updateManager.downloadUpdate(MainActivity.this, info))
+                .setNeutralButton(R.string.update_action_view_release,
+                        (dialog, which) -> openReleasePage(info));
+        if (mandatory) {
+            builder.setCancelable(false);
+            builder.setNegativeButton(R.string.update_action_close_app,
+                    (dialog, which) -> finish());
+        } else {
+            builder.setNegativeButton(R.string.update_action_later, null);
+        }
+        updateDialog = builder.show();
+    }
+
+    private CharSequence buildUpdateMessage(UpdateManager.UpdateInfo info) {
+        StringBuilder builder = new StringBuilder();
+        builder.append(getString(R.string.update_current_version,
+                BuildConfig.VERSION_NAME, BuildConfig.VERSION_CODE));
+        builder.append('\n');
+        builder.append(getString(R.string.update_latest_version,
+                info.versionName, info.versionCode));
+        if (info.minSupportedVersionCode > 0) {
+            builder.append('\n').append(getString(R.string.update_min_supported,
+                    info.minSupportedVersionCode));
+        }
+        String size = info.formatSize(this);
+        if (!size.isEmpty()) {
+            builder.append('\n').append(getString(R.string.update_download_size, size));
+        }
+        if (info.downloadCount > 0) {
+            builder.append('\n').append(getString(R.string.update_downloads,
+                    info.downloadCount));
+        }
+        if (!info.releaseNotes.isEmpty()) {
+            builder.append("\n\n");
+            builder.append(getString(R.string.update_release_notes_title));
+            builder.append('\n');
+            builder.append(info.getReleaseNotesPreview());
+        }
+        if (!info.isMandatory(BuildConfig.VERSION_CODE)) {
+            builder.append("\n\n");
+            builder.append(getString(R.string.update_optional_hint));
+        }
+        return builder.toString();
+    }
+
+    private void openReleasePage(UpdateManager.UpdateInfo info) {
+        String url = info.releasePageUrl;
+        if (url == null || url.isEmpty()) {
+            url = info.downloadUrl;
+        }
+        if (url == null || url.isEmpty()) {
+            Toast.makeText(this, R.string.update_error_missing_url, Toast.LENGTH_SHORT).show();
+            return;
+        }
+        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+        try {
+            startActivity(intent);
+        } catch (Exception e) {
+            Toast.makeText(this, R.string.update_error_open_release, Toast.LENGTH_SHORT).show();
+        }
+    }
+
     private int getSpanCount() {
         return getResources().getInteger(R.integer.channel_grid_span);
     }

app/src/main/java/com/streamplayer/UpdateManager.java

@@ -0,0 +1,518 @@
+package com.streamplayer;
+
+import android.app.Activity;
+import android.app.DownloadManager;
+import android.content.ActivityNotFoundException;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Environment;
+import android.os.Handler;
+import android.os.Looper;
+import android.provider.Settings;
+import android.text.TextUtils;
+import android.text.format.Formatter;
+import android.util.Log;
+import android.widget.Toast;
+
+import androidx.core.content.FileProvider;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.ref.WeakReference;
+import java.util.Locale;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+
+/**
+ * Encapsula toda la lógica para consultar releases de Gitea, descargar el APK y lanzarlo.
+ */
+public class UpdateManager {
+
+    private static final String TAG = "UpdateManager";
+    private static final String LATEST_RELEASE_URL =
+            "https://gitea.cbcren.online/api/v1/repos/renato97/app/releases/latest";
+
+    private final Context appContext;
+    private final Handler mainHandler;
+    private final ExecutorService networkExecutor;
+    private final OkHttpClient httpClient;
+
+    private WeakReference<Activity> activityRef;
+    private DownloadReceiver downloadReceiver;
+    private long currentDownloadId = -1L;
+    private File downloadingFile;
+    private File pendingInstallFile;
+    private UpdateInfo cachedUpdate;
+
+    public UpdateManager(Context context) {
+        this.appContext = context.getApplicationContext();
+        this.mainHandler = new Handler(Looper.getMainLooper());
+        this.networkExecutor = Executors.newSingleThreadExecutor();
+        this.httpClient = new OkHttpClient.Builder()
+                .connectTimeout(15, TimeUnit.SECONDS)
+                .readTimeout(20, TimeUnit.SECONDS)
+                .callTimeout(25, TimeUnit.SECONDS)
+                .build();
+    }
+
+    public void checkForUpdates(UpdateCallback callback) {
+        networkExecutor.execute(() -> {
+            try {
+                Request request = new Request.Builder()
+                        .url(LATEST_RELEASE_URL)
+                        .get()
+                        .build();
+                try (Response response = httpClient.newCall(request).execute()) {
+                    if (response.body() == null) {
+                        postError(callback, appContext.getString(R.string.update_error_empty_response));
+                        return;
+                    }
+                    if (!response.isSuccessful()) {
+                        postError(callback, appContext.getString(R.string.update_error_http,
+                                response.code()));
+                        return;
+                    }
+                    String body = response.body().string();
+                    UpdateInfo info = parseRelease(body);
+                    cachedUpdate = info;
+                    if (info != null && info.isUpdateAvailable(BuildConfig.VERSION_CODE)) {
+                        postAvailable(callback, info);
+                    } else {
+                        postUpToDate(callback);
+                    }
+                }
+            } catch (IOException | JSONException e) {
+                Log.w(TAG, "Error checking updates", e);
+                postError(callback, e.getMessage());
+            }
+        });
+    }
+
+    public UpdateInfo getCachedUpdate() {
+        return cachedUpdate;
+    }
+
+    public void downloadUpdate(Activity activity, UpdateInfo info) {
+        if (info == null || TextUtils.isEmpty(info.downloadUrl)) {
+            showToast(appContext.getString(R.string.update_error_missing_url));
+            return;
+        }
+        DownloadManager downloadManager =
+                (DownloadManager) appContext.getSystemService(Context.DOWNLOAD_SERVICE);
+        if (downloadManager == null) {
+            showToast(appContext.getString(R.string.update_error_download_manager));
+            return;
+        }
+        File targetDir = appContext.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS);
+        if (targetDir == null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            targetDir = appContext.getExternalFilesDir(null);
+        }
+        if (targetDir == null) {
+            showToast(appContext.getString(R.string.update_error_storage));
+            return;
+        }
+        if (!targetDir.exists() && !targetDir.mkdirs()) {
+            showToast(appContext.getString(R.string.update_error_storage));
+            return;
+        }
+        String fileName = info.getResolvedFileName();
+        File apkFile = new File(targetDir, fileName);
+        if (apkFile.exists() && !apkFile.delete()) {
+            showToast(appContext.getString(R.string.update_error_storage));
+            return;
+        }
+
+        Uri destination = Uri.fromFile(apkFile);
+        DownloadManager.Request request = new DownloadManager.Request(Uri.parse(info.downloadUrl));
+        request.setTitle(appContext.getString(R.string.update_notification_title, info.versionName));
+        request.setDescription(appContext.getString(R.string.update_notification_description));
+        request.setAllowedOverMetered(true);
+        request.setAllowedOverRoaming(false);
+        request.setNotificationVisibility(
+                DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
+        request.setDestinationUri(destination);
+
+        try {
+            currentDownloadId = downloadManager.enqueue(request);
+        } catch (IllegalArgumentException e) {
+            showToast(appContext.getString(R.string.update_error_download, e.getMessage()));
+            return;
+        }
+        downloadingFile = apkFile;
+        activityRef = new WeakReference<>(activity);
+        registerDownloadReceiver();
+        showToast(appContext.getString(R.string.update_download_started));
+    }
+
+    public void resumePendingInstall(Activity activity) {
+        if (pendingInstallFile == null || !pendingInstallFile.exists()) {
+            return;
+        }
+        installDownloadedApk(activity, pendingInstallFile);
+    }
+
+    public void release() {
+        unregisterDownloadReceiver();
+        networkExecutor.shutdownNow();
+        activityRef = null;
+    }
+
+    private UpdateInfo parseRelease(String responseBody) throws JSONException, IOException {
+        JSONObject releaseJson = new JSONObject(responseBody);
+        String tagName = releaseJson.optString("tag_name", "");
+        String versionName = deriveVersionName(tagName, releaseJson.optString("name"));
+        int versionCode = parseVersionCode(versionName);
+        String releaseNotes = releaseJson.optString("body", "");
+        String releasePageUrl = releaseJson.optString("html_url", "");
+        JSONArray assets = releaseJson.optJSONArray("assets");
+        JSONObject apkAsset = findApkAsset(assets);
+        String downloadUrl = apkAsset != null ? apkAsset.optString("browser_download_url", "") : "";
+        String downloadFileName = apkAsset != null ? apkAsset.optString("name", "") : "";
+        long sizeBytes = apkAsset != null ? apkAsset.optLong("size", 0L) : 0L;
+        int downloadCount = apkAsset != null ? apkAsset.optInt("download_count", 0) : 0;
+
+        int minSupported = 0;
+        boolean forceUpdate = false;
+        JSONObject manifestJson = fetchManifest(assets);
+        if (manifestJson != null) {
+            versionCode = manifestJson.optInt("versionCode", versionCode);
+            versionName = manifestJson.optString("versionName", versionName);
+            minSupported = manifestJson.optInt("minSupportedVersionCode", 0);
+            forceUpdate = manifestJson.optBoolean("forceUpdate", false);
+            String manifestUrl = manifestJson.optString("downloadUrl", null);
+            if (!TextUtils.isEmpty(manifestUrl)) {
+                downloadUrl = manifestUrl;
+            }
+            if (manifestJson.has("fileName")) {
+                downloadFileName = manifestJson.optString("fileName", downloadFileName);
+            }
+            if (manifestJson.has("sizeBytes")) {
+                sizeBytes = manifestJson.optLong("sizeBytes", sizeBytes);
+            }
+            if (manifestJson.has("notes") && TextUtils.isEmpty(releaseNotes)) {
+                releaseNotes = manifestJson.optString("notes", releaseNotes);
+            }
+        }
+
+        if (TextUtils.isEmpty(downloadUrl)) {
+            return null;
+        }
+
+        return new UpdateInfo(versionCode, versionName, releaseNotes, downloadUrl,
+                downloadFileName, sizeBytes, downloadCount, releasePageUrl,
+                minSupported, forceUpdate);
+    }
+
+    private JSONObject fetchManifest(JSONArray assets) throws IOException, JSONException {
+        if (assets == null) {
+            return null;
+        }
+        for (int i = 0; i < assets.length(); i++) {
+            JSONObject asset = assets.optJSONObject(i);
+            if (asset == null) {
+                continue;
+            }
+            String name = asset.optString("name", "").toLowerCase(Locale.US);
+            if (TextUtils.isEmpty(name) || !name.endsWith(".json")) {
+                continue;
+            }
+            if (!(name.contains("update") || name.contains("manifest"))) {
+                continue;
+            }
+            String url = asset.optString("browser_download_url", "");
+            if (TextUtils.isEmpty(url)) {
+                continue;
+            }
+            Request request = new Request.Builder().url(url).get().build();
+            try (Response response = httpClient.newCall(request).execute()) {
+                if (!response.isSuccessful() || response.body() == null) {
+                    continue;
+                }
+                String json = response.body().string();
+                if (!TextUtils.isEmpty(json)) {
+                    return new JSONObject(json);
+                }
+            }
+        }
+        return null;
+    }
+
+    private JSONObject findApkAsset(JSONArray assets) {
+        if (assets == null) {
+            return null;
+        }
+        JSONObject fallback = null;
+        for (int i = 0; i < assets.length(); i++) {
+            JSONObject asset = assets.optJSONObject(i);
+            if (asset == null) {
+                continue;
+            }
+            if (fallback == null) {
+                fallback = asset;
+            }
+            String name = asset.optString("name", "").toLowerCase(Locale.US);
+            if (name.endsWith(".apk")) {
+                return asset;
+            }
+        }
+        return fallback;
+    }
+
+    private String deriveVersionName(String tagName, String fallback) {
+        String base = !TextUtils.isEmpty(tagName) ? tagName : fallback;
+        if (TextUtils.isEmpty(base)) {
+            return "";
+        }
+        return base.replaceFirst("^[Vv]", "").trim();
+    }
+
+    private int parseVersionCode(String versionName) {
+        if (TextUtils.isEmpty(versionName)) {
+            return -1;
+        }
+        String normalized = versionName.replaceAll("[^0-9\\.]", "");
+        if (TextUtils.isEmpty(normalized)) {
+            return -1;
+        }
+        String[] parts = normalized.split("\\.");
+        int major = parsePart(parts, 0);
+        int minor = parsePart(parts, 1);
+        int patch = parsePart(parts, 2);
+        return major * 10000 + minor * 100 + patch;
+    }
+
+    private int parsePart(String[] parts, int index) {
+        if (parts.length <= index) {
+            return 0;
+        }
+        try {
+            return Integer.parseInt(parts[index]);
+        } catch (NumberFormatException e) {
+            return 0;
+        }
+    }
+
+    private void installDownloadedApk(Activity activity, File apkFile) {
+        if (activity == null || apkFile == null || !apkFile.exists()) {
+            return;
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            boolean canInstall = appContext.getPackageManager().canRequestPackageInstalls();
+            if (!canInstall) {
+                pendingInstallFile = apkFile;
+                Intent intent = new Intent(Settings.ACTION_MANAGE_UNKNOWN_APP_SOURCES,
+                        Uri.parse("package:" + appContext.getPackageName()));
+                try {
+                    activity.startActivity(intent);
+                } catch (ActivityNotFoundException ignored) {
+                    showToast(appContext.getString(R.string.update_error_install_permissions));
+                }
+                showToast(appContext.getString(R.string.update_permission_request));
+                return;
+            }
+        }
+        Uri uri = FileProvider.getUriForFile(appContext,
+                appContext.getPackageName() + ".fileprovider", apkFile);
+        Intent installIntent = new Intent(Intent.ACTION_VIEW);
+        installIntent.setDataAndType(uri, "application/vnd.android.package-archive");
+        installIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+        installIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        try {
+            activity.startActivity(installIntent);
+            pendingInstallFile = null;
+        } catch (ActivityNotFoundException e) {
+            showToast(appContext.getString(R.string.update_error_install_intent));
+        }
+    }
+
+    private void registerDownloadReceiver() {
+        if (downloadReceiver != null) {
+            return;
+        }
+        downloadReceiver = new DownloadReceiver();
+        IntentFilter filter = new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
+        appContext.registerReceiver(downloadReceiver, filter);
+    }
+
+    private void unregisterDownloadReceiver() {
+        if (downloadReceiver != null) {
+            try {
+                appContext.unregisterReceiver(downloadReceiver);
+            } catch (IllegalArgumentException ignored) {
+            }
+            downloadReceiver = null;
+        }
+    }
+
+    private void handleDownloadComplete(long downloadId) {
+        if (downloadId != currentDownloadId) {
+            return;
+        }
+        DownloadManager downloadManager =
+                (DownloadManager) appContext.getSystemService(Context.DOWNLOAD_SERVICE);
+        if (downloadManager == null) {
+            showToast(appContext.getString(R.string.update_error_download_manager));
+            cleanupDownloadState();
+            return;
+        }
+        DownloadManager.Query query = new DownloadManager.Query();
+        query.setFilterById(downloadId);
+        Cursor cursor = downloadManager.query(query);
+        if (cursor != null) {
+            try {
+                if (cursor.moveToFirst()) {
+                    int status = cursor.getInt(cursor.getColumnIndexOrThrow(
+                            DownloadManager.COLUMN_STATUS));
+                    if (status == DownloadManager.STATUS_SUCCESSFUL && downloadingFile != null) {
+                        pendingInstallFile = downloadingFile;
+                        Activity activity = activityRef != null ? activityRef.get() : null;
+                        mainHandler.post(() -> {
+                            showToast(appContext.getString(R.string.update_download_complete));
+                            installDownloadedApk(activity, pendingInstallFile);
+                        });
+                    } else {
+                        int reason = cursor.getInt(cursor.getColumnIndexOrThrow(
+                                DownloadManager.COLUMN_REASON));
+                        mainHandler.post(() -> showToast(appContext.getString(
+                                R.string.update_error_download_failed, reason)));
+                    }
+                }
+            } finally {
+                cursor.close();
+            }
+        }
+        cleanupDownloadState();
+    }
+
+    private void cleanupDownloadState() {
+        unregisterDownloadReceiver();
+        currentDownloadId = -1L;
+        downloadingFile = null;
+    }
+
+    private void postAvailable(UpdateCallback callback, UpdateInfo info) {
+        if (callback == null) {
+            return;
+        }
+        mainHandler.post(() -> callback.onUpdateAvailable(info));
+    }
+
+    private void postUpToDate(UpdateCallback callback) {
+        if (callback == null) {
+            return;
+        }
+        mainHandler.post(callback::onUpToDate);
+    }
+
+    private void postError(UpdateCallback callback, String message) {
+        if (callback == null) {
+            return;
+        }
+        mainHandler.post(() -> callback.onError(message));
+    }
+
+    private void showToast(String message) {
+        mainHandler.post(() -> Toast.makeText(appContext, message, Toast.LENGTH_LONG).show());
+    }
+
+    private class DownloadReceiver extends BroadcastReceiver {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1L);
+            handleDownloadComplete(id);
+        }
+    }
+
+    public interface UpdateCallback {
+        void onUpdateAvailable(UpdateInfo info);
+
+        void onUpToDate();
+
+        void onError(String message);
+    }
+
+    public static class UpdateInfo {
+        public final int versionCode;
+        public final String versionName;
+        public final String releaseNotes;
+        public final String downloadUrl;
+        public final String downloadFileName;
+        public final long downloadSizeBytes;
+        public final int downloadCount;
+        public final String releasePageUrl;
+        public final int minSupportedVersionCode;
+        public final boolean forceUpdate;
+
+        UpdateInfo(int versionCode,
+                   String versionName,
+                   String releaseNotes,
+                   String downloadUrl,
+                   String downloadFileName,
+                   long downloadSizeBytes,
+                   int downloadCount,
+                   String releasePageUrl,
+                   int minSupportedVersionCode,
+                   boolean forceUpdate) {
+            this.versionCode = versionCode;
+            this.versionName = versionName;
+            this.releaseNotes = releaseNotes == null ? "" : releaseNotes.trim();
+            this.downloadUrl = downloadUrl;
+            this.downloadFileName = downloadFileName;
+            this.downloadSizeBytes = downloadSizeBytes;
+            this.downloadCount = downloadCount;
+            this.releasePageUrl = releasePageUrl;
+            this.minSupportedVersionCode = minSupportedVersionCode;
+            this.forceUpdate = forceUpdate;
+        }
+
+        public boolean isUpdateAvailable(int currentVersionCode) {
+            return versionCode > currentVersionCode;
+        }
+
+        public boolean isMandatory(int currentVersionCode) {
+            return forceUpdate || currentVersionCode < minSupportedVersionCode;
+        }
+
+        public String getReleaseNotesPreview() {
+            if (TextUtils.isEmpty(releaseNotes)) {
+                return "";
+            }
+            final int limit = 900;
+            if (releaseNotes.length() <= limit) {
+                return releaseNotes;
+            }
+            return releaseNotes.substring(0, limit) + "\n…";
+        }
+
+        public String getResolvedFileName() {
+            if (!TextUtils.isEmpty(downloadFileName)) {
+                return downloadFileName;
+            }
+            String safeVersion = TextUtils.isEmpty(versionName) ? String.valueOf(versionCode)
+                    : versionName.replaceAll("[^0-9a-zA-Z._-]", "");
+            return "StreamPlayer-" + safeVersion + ".apk";
+        }
+
+        public String formatSize(Context context) {
+            if (downloadSizeBytes <= 0) {
+                return "";
+            }
+            return Formatter.formatShortFileSize(context, downloadSizeBytes);
+        }
+    }
+}
+

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

@@ -7,4 +7,33 @@
     <string name="message_no_channels">No hay canales disponibles</string>
     <string name="message_no_events">No hay eventos disponibles</string>
     <string name="message_events_error">No se pudieron cargar los eventos: %1$s</string>
+    <string name="update_required_title">Actualización obligatoria</string>
+    <string name="update_available_title">Actualización disponible</string>
+    <string name="update_action_download">Actualizar ahora</string>
+    <string name="update_action_view_release">Ver detalles</string>
+    <string name="update_action_close_app">Cerrar aplicación</string>
+    <string name="update_action_later">Más tarde</string>
+    <string name="update_current_version">Versión instalada: %1$s (%2$d)</string>
+    <string name="update_latest_version">Última versión publicada: %1$s (%2$d)</string>
+    <string name="update_min_supported">Versiones anteriores a %1$d ya no están permitidas.</string>
+    <string name="update_download_size">Tamaño aproximado: %1$s</string>
+    <string name="update_downloads">Descargas registradas: %1$d</string>
+    <string name="update_release_notes_title">Novedades</string>
+    <string name="update_optional_hint">Puedes continuar usando la app, pero recomendamos instalar la actualización para obtener el mejor rendimiento.</string>
+    <string name="update_error_checking">No se pudo verificar actualizaciones (%1$s)</string>
+    <string name="update_error_open_release">No se pudo abrir el detalle de la versión</string>
+    <string name="update_error_empty_response">Respuesta vacía del servidor de releases</string>
+    <string name="update_error_http">Error de red (%1$d)</string>
+    <string name="update_error_missing_url">No se encontró URL de descarga</string>
+    <string name="update_error_download_manager">DownloadManager no está disponible en este dispositivo</string>
+    <string name="update_error_storage">No se pudo preparar el almacenamiento para la actualización</string>
+    <string name="update_error_download">Error al iniciar la descarga: %1$s</string>
+    <string name="update_download_started">Descarga iniciada, revisa la notificación para ver el progreso</string>
+    <string name="update_download_complete">Descarga finalizada, preparando instalación…</string>
+    <string name="update_error_download_failed">La descarga falló (código %1$d)</string>
+    <string name="update_error_install_permissions">No se pudo abrir la configuración de instalación desconocida</string>
+    <string name="update_permission_request">Habilita "Instalar apps desconocidas" para StreamPlayer y regresa para continuar.</string>
+    <string name="update_error_install_intent">No se pudo abrir el instalador de paquetes</string>
+    <string name="update_notification_title">StreamPlayer %1$s</string>
+    <string name="update_notification_description">Descargando nueva versión</string>
 </resources>

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

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <external-files-path
+        name="updates"
+        path="." />
+</paths>

release/update-manifest.example.json

@@ -0,0 +1,10 @@
+{
+  "versionCode": 90000,
+  "versionName": "9.0.0",
+  "minSupportedVersionCode": 80000,
+  "forceUpdate": false,
+  "downloadUrl": "https://gitea.cbcren.online/renato97/app/releases/download/v9.0/StreamPlayer-v9.0-DefinitiveEdition.apk",
+  "fileName": "StreamPlayer-v9.0-DefinitiveEdition.apk",
+  "sizeBytes": 12000000,
+  "notes": "Texto opcional si necesitas personalizar las notas que verá el usuario"
+}