Fling gesture detection on grid layout

Question

I want to get fling gesture detection working in my Android application.

What I have is a GridLayout that contains 9 ImageView

Answer 1

If you dont like to create a separate class or make code complex,
You can just create a GestureDetector variable inside OnTouchListener and make your code more easier

namVyuVar can be any name of the View on which you need to set the listner

namVyuVar.setOnTouchListener(new View.OnTouchListener()
{
    @Override
    public boolean onTouch(View view, MotionEvent MsnEvtPsgVal)
    {
        flingActionVar.onTouchEvent(MsnEvtPsgVal);
        return true;
    }

    GestureDetector flingActionVar = new GestureDetector(getApplicationContext(), new GestureDetector.SimpleOnGestureListener()
    {
        private static final int flingActionMinDstVac = 120;
        private static final int flingActionMinSpdVac = 200;

        @Override
        public boolean onFling(MotionEvent fstMsnEvtPsgVal, MotionEvent lstMsnEvtPsgVal, float flingActionXcoSpdPsgVal, float flingActionYcoSpdPsgVal)
        {
            if(fstMsnEvtPsgVal.getX() - lstMsnEvtPsgVal.getX() > flingActionMinDstVac && Math.abs(flingActionXcoSpdPsgVal) > flingActionMinSpdVac)
            {
                // TskTdo :=> On Right to Left fling

                return false;
            }
            else if (lstMsnEvtPsgVal.getX() - fstMsnEvtPsgVal.getX() > flingActionMinDstVac && Math.abs(flingActionXcoSpdPsgVal) > flingActionMinSpdVac)
            {
                // TskTdo :=> On Left to Right fling

                return false;
            }

            if(fstMsnEvtPsgVal.getY() - lstMsnEvtPsgVal.getY() > flingActionMinDstVac && Math.abs(flingActionYcoSpdPsgVal) > flingActionMinSpdVac)
            {
                // TskTdo :=> On Bottom to Top fling

                return false;
            }
            else if (lstMsnEvtPsgVal.getY() - fstMsnEvtPsgVal.getY() > flingActionMinDstVac && Math.abs(flingActionYcoSpdPsgVal) > flingActionMinSpdVac)
            {
                // TskTdo :=> On Top to Bottom fling

                return false;
            }
            return false;
        }
    });
});