How to detect doubletap on a View?

setupEventHandlers: function(){
this.mon(this.el, {
    tap: function(e){            
        if(this.delayedTask == null){            
            //setup a delayed task that is called IF double click is not later detected
            this.delayedTask = new Ext.util.DelayedTask(
              function(){
                this.doSomethingInteresting(); 
                this.delayedTask = null;
              }, this);  

            //invoke (with reasonable time to cancel)
            this.delayedTask.delay(300);
        }                
    }, 
    doubletap: function(e){                
        //cancel and clear the queued single click tasks if it's there
        if(this.delayedTask != null){
          this.delayedTask.cancel();
          this.delayedTask = null;
        }                        

        //handle the double click
        this.doSomethingReallyInteresting();
    },        
    scope: this
});

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

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

    @Override
    public boolean onTouch(View v, MotionEvent event) {

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

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

                    numberOfTaps = 0;
                    lastTapTimeMs = 0;
                    break;
                }

                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() {
                        @Override
                        public void run() {
                            //handle double tap
                            Toast.makeText(getApplicationContext(), "double", Toast.LENGTH_SHORT).show();
                        }
                    }, ViewConfiguration.getDoubleTapTimeout());
                }
        }

        return true;
    }
});