Double tap using GestureDetector

Question

How do I modify this code below so that when a user double taps on the screen the apps/puzzle restarts? any help is much appreciated.

 return true; } public boolean onTouchEvent( MotionEvent event ) { detector.onTouchEvent( event ); return true; } private class DoubleTapHandler extends GestureDetector.SimpleOnGestureListener { public boolean onDoubleTapEvent( MotionEvent event ) { int touchY = ( int ) event.getRawY( ); // y coordinate of the touch within puzzleView is // touchY - actionBarHeight - statusBarHeight int index = puzzleView.indexOfTextView( touchY - actionBarHeight - statusBarHeight ); if( puzzleView.getTextViewText( index ) .equals( puzzle.wordToChange( ) ) ) puzzleView.setTextViewText( index, puzzle.replacementWord( ) ); return true; } } }

Kdaydin · Accepted Answer · 2020-07-22 06:53:27Z

Not a perfect solution but works :)

private fun setDoubleClick() { var numOfClicks = 0 [View].setOnClickListener { numOfClicks++ if (numOfClicks == 2) { //onDoubleClick numOfClicks = 0 } else { Handler().postDelayed({ numOfClicks = 0 }, 2000/*Set this according to desired doubleclick speed*/ ) } } }

I’ll try it and see But I’m using java language ... I’m also new to android programming.

Jyotish Biswas · Accepted Answer · 2020-07-23 04:34:18Z

final GestureDetector gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() { //doubletap method @Override public boolean onDoubleTap(MotionEvent e) { //put what do you want when double tap restartApplication(); return true; } @Override public void onLongPress(MotionEvent e) { super.onLongPress(e); } @Override public boolean onDoubleTapEvent(MotionEvent e) { return true; } @Override public boolean onDown(MotionEvent e) { return true; } });

Now attach the detector your view touch listener

yourView.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch (View v, MotionEvent event){ return gestureDetector.onTouchEvent(event); } });

Here is the restart function

void restartApplication(){ Intent i = getBaseContext().getPackageManager() .getLaunchIntentForPackage( getBaseContext().getPackageName() ); i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK); startActivity(i); }

Reference https://stackoverflow.com/a/39816509/12676247

Okay but i need to be able to doubleTap and app restarts automatically. is this formula similar to that as well?
Thank you so much for help, it has worked like a charm here. again thank you so much sir...I don't know how to thank you

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