Android vibration app doesn't work anymore after Android 10, API 29 update

Question

so I made an app a couple months back that helped me improve my sleep. I have sleeping issues and, it sounds odd, but I use the app to vibrate my phone when I go to bed to give myself something to focus on to go to sleep, it is currently a vital aspect of my sleep routine.

However, I updated my phone to Android 10 yesterday and it completely broke the app. Before, the app would vibrate when I click the start button and continue to vibrate even after I lock the phone by using a background service, broadcast receiver, and wake lock. Now though, the app stops vibrating after I lock the phone and nothing in the console gives any reason as to why it is doing this.

If anyone could give advice on what I could change in the code or something, it would be much appreciated as I'm completely lost as to what to do and I have to get this to work somehow.

Here is the code:

Function in MainActivity that handles the beginning of the service Vibrate:

// Event for when the VIBRATE button is pressed
public void beginVibration(View view) {
    // Given either of the bars are not 0
    if (durationBar.getProgress() != 0 || delayBar.getProgress() != 0) {
        // Get the values for each bar and set them accordingly in the vibration value array
        long[] pattern = {0, durationBar.getProgress(), delayBar.getProgress()};

        // Setup the ServiceConnection to monitor the Vibrate service
        c = new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
                m_service = ((Vibrate.MyBinder)service).getService();
            }

            @Override
            public void onServiceDisconnected(ComponentName name) {
                m_service = null;
            }
        };

        // Bind the service to the connection
        bindService(i, c, BIND_AUTO_CREATE);

        // Insert the pattern into the intent itself
        i.putExtra("pattern", pattern);

        // Start the vibrate service
        this.startService(i);
    }
}

Vibrate Service class:

public class Vibrate extends Service {

// Vibration object
private Vibrator v;

/*
THESE THREE ARE FOR PREVENTING THE VIBRATION FROM STOPPING AFTER THE PHONE IS PUT TO SLEEP
*/
// Wake Lock object
private PowerManager.WakeLock wl;

// Manager for the notifications
private NotificationManagerCompat m_notificationManager;

// BroadcastReceiver object
public BroadcastReceiver re;

public AudioAttributes audioAttributes;

// Not gonna lie, Idk what this does just know it is part of the binding process within MainActivity
public class MyBinder extends Binder {
    public Vibrate getService() {
        return Vibrate.this;
    }
}

@Override
public void onCreate() {
    super.onCreate();

    // Acquire the Wake Lock
    PowerManager pw = (PowerManager) getSystemService(POWER_SERVICE);
    wl = pw.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WL:");
    wl.acquire();

    // Get the vibration service
    v = (Vibrator) getSystemService(VIBRATOR_SERVICE);
    AudioAttributes audioAttributes = new AudioAttributes.Builder()
            .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
            .setUsage(AudioAttributes.USAGE_ALARM)
            .build();

}

@Override
public int onStartCommand(Intent i, int flags, int startId) {

    // Ensure that an intent with a long array has been passed
    if (i != null && i.getExtras() != null) {
        // Get the array
        final long[] pattern = i.getExtras().getLongArray("pattern");
        // Begin the vibration
        v.vibrate(pattern, 0);

        // Intialize the BroadcastReceiver and set it to trigger when the screen is turned off,
        // thus triggering the vibrations
        re = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
                    Log.i("VIZZY: ", "VIBRATION STARTED");
                    v.vibrate(pattern, 0, audioAttributes);
                    Log.i("VIZZY: ", "VIBRATION BEGUn");
                }
            }
        };

        // Add a listener for when the screen turns off and register the receiver
        IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
        registerReceiver(re, filter);
    }

    return Service.START_STICKY;
}

@Override
public void onDestroy() {
    // If the phone was put to sleep, cancel the notification keeping the vibration going
    if (m_notificationManager != null) {
        m_notificationManager.cancel(001);
    }

    // Release the Wake Lock, unregister the BroadcastReceiver, and stop the vibrations
    wl.release();
    unregisterReceiver(re);
    v.cancel();
}

@Override
public IBinder onBind(Intent intent) {
    return null;
}

private void addNotification() {
    // create the notification
    Notification.Builder m_notificationBuilder = new Notification.Builder(this)
    .setContentTitle("VIZZY")
    .setContentText("VIBRATING")
            .setSmallIcon(R.mipmap.ic_launcher);





    // create the pending intent and add to the notification
    Intent intent = new Intent(this, Vibrate.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
    m_notificationBuilder.setContentIntent(pendingIntent);

    m_notificationManager = NotificationManagerCompat.from(this);

    // send the notification
    m_notificationManager.notify(001, m_notificationBuilder.build());
}

}

Thank you for anyone's help in advance.

Answer 1

I faced the same issue. And I found out that starting from target 29 vibration will work in background only with the proper audio attributes passed to the method:

public void vibrate(VibrationEffect vibe, AudioAttributes attributes);

You can try to use it in that way:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { 
    vibrator.vibrate(VibrationEffect.createWaveform(pattern, 0), 
            new AudioAttributes.Builder()
                    .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                    .setUsage(AudioAttributes.USAGE_ALARM)
                    .build()); 
} else { 
    vibrator.vibrate(pattern, 0);
}