Android, pausing and resuming handler callbacks

Have you tried with:

@Override
public void onPause()
{
  handler.removeCallbacks(Play);
  Soundmanager.autoPause()
}

Ger

Modifying the answer given by CpcCrunch. There handleMessage not worked for me, so instead of it using dispatchMessage. Note: Below code is written in Kotlin:

class CustomHandler: Handler() {

    var s = Stack<Message>()
    var is_paused = false

    @Synchronized
    fun pause() {
        is_paused = true
    }

    @Synchronized
    fun resume() {
        is_paused = false
        while (!s.empty()) {
            sendMessageAtFrontOfQueue(s.pop())
        }
    }

    override fun dispatchMessage(msg: Message?) {
        if (is_paused) {
            s.push(Message.obtain(msg))
            return
        } else {
            super.dispatchMessage(msg)
        }
    }
}

You need to subclass Handler and implement pause/resume methods as follows (then just call handler.pause() when you want to pause message handling, and call handler.resume() when you want to restart it):

class MyHandler extends Handler {
    Stack<Message> s = new Stack<Message>();
    boolean is_paused = false;

    public synchronized void pause() {
        is_paused = true;
    }

    public synchronized void resume() {
        is_paused = false;
        while (!s.empty()) {
            sendMessageAtFrontOfQueue(s.pop());
        }
    }

    @Override
    public void handleMessage(Message msg) {
        if (is_paused) {
            s.push(Message.obtain(msg));
            return;
        }else{
               super.handleMessage(msg);
               // otherwise handle message as normal
               // ...
        }
    }
    //...
}