Android InstantApp：前台服务

Question

无法在 InstantApp 功能模块中使用前台服务。低于运行时安全异常。

java.lang.RuntimeException: Unable to start activity ComponentInfo{..XYZActivity}: java.lang.SecurityException: Method class android.app.ActivityManagerProxy.getServices not available to instant apps

Android 文档说，

Restricted features: Run on the device without users being aware. Foreground services are available. Instant apps can only be started through activities that support App Links, so services, content providers or broadcast receivers won't be able to start your app.

代码：

// Starting service
getAppContext().startService(new Intent(getAppContext(), FirebaseAuthService.class));


// Foreground service class
public class FirebaseAuthService extends Service {

    private static final String TAG = "FirebaseAuthService";
    private boolean isRunning = false;

    private String mUserId;
    private FirebaseAuth mAuth;

    @Override
    public void onCreate() {
        Log.d(TAG, "Service onCreate");

        startForeground();
        isRunning = true;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.i(TAG, "Service onStartCommand");

        new Thread(new Runnable() {
            @Override
            public void run() {
                myTask();
            }
        }).start();

        return Service.START_STICKY;
    }


    @Override
    public IBinder onBind(Intent arg0) {
        Log.i(TAG, "Service onBind");
        return null;
    }

    @Override
    public void onDestroy() {
        isRunning = false;
        Log.i(TAG, "Service onDestroy");
    }

    private void startForeground() {
        Intent notificationIntent = new Intent(this, HomeActivity.class);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

        Notification notification = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.noti_logo)
                .setContentTitle("Title")
                .setContentText("Preparing...")
                .setContentIntent(pendingIntent).build();

        startForeground(1337, notification);
    }

    private void myTask() {
         // At end
        // Stop service once it finishes its task
        stopSelf();
    }
}

Answer 1

您的代码是正确的，但由于 Instant Apps supervisor 中的一个已知问题，前台服务目前无法正常工作。