user2484359 user2484359 - 1 year ago 65
Android Question

Android - Detect doubletap AND tripletap on view

I've been trying to build a tap detector that can detect both double and tripe tap. After my efforts failed I searched a long time on the net to find something ready to use but no luck! It's strange that libraries for something like this are so scarce. Any help ??

Answer Source

You can try something like this.

Though I would generally recommend against using triple taps as a pattern as it is not something users are generally used to, so unless it's properly communicated to them, most might never know they can triple tap a view. Same goes for double taping actually on mobile devices, it's not always an intuitive way to interact in that environment.

view.setOnTouchListener(new View.OnTouchListener() {
    Handler handler = new Handler();

    int numberOfTaps = 0;
    long lastTapTimeMs = 0;
    long touchDownMs = 0;

    public boolean onTouch(View v, MotionEvent event) {

        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                touchDownMs = System.currentTimeMillis();
            case MotionEvent.ACTION_UP:

                if ((System.currentTimeMillis() - touchDownMs) > ViewConfiguration.getTapTimeout()) {
                    //it was not a tap

                    numberOfTaps = 0;
                    lastTapTimeMs = 0;

                if (numberOfTaps > 0 
                        && (System.currentTimeMillis() - lastTapTimeMs) < ViewConfiguration.getDoubleTapTimeout()) {
                    numberOfTaps += 1;
                } else {
                    numberOfTaps = 1;

                lastTapTimeMs = System.currentTimeMillis();

                if (numberOfTaps == 3) {
                    Toast.makeText(getApplicationContext(), "triple", Toast.LENGTH_SHORT).show();
                    //handle triple tap
                } else if (numberOfTaps == 2) {
                    handler.postDelayed(new Runnable() {
                        public void run() {
                            //handle double tap
                            Toast.makeText(getApplicationContext(), "double", Toast.LENGTH_SHORT).show();
                    }, ViewConfiguration.getDoubleTapTimeout());

        return true;
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