Question

I have a RelativeLayout I am putting a TouchListener into using GestureDetector. I have already done and can detect double tapping but how can I add a swipe event in the view also?

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

        gestureDetector = new GestureDetector(new GestureDetector.SimpleOnGestureListener() {
            @Override
            public boolean onDoubleTap(MotionEvent e) {
                count++;
                doTaskHere();
                return true;
            }
            @Override
            public boolean onDown(MotionEvent e) {
                return true;
            }
        });
    }

After implementing a swipe event, how can I switch between
a.) allowing tapping only and disabling swiping
and
b.) disabling tapping and allowing swiping only.

Answer 1

In your GestureDetector listener, add the onFling method. Additionally, to switch between them, you will want a boolean variable in your class that can be switched.

private boolean mAllowSwipe = true; // True = swipe, no double-tap; false = double-tap, no swipe

// ...

private void switchGestureMode() {
    if (mAllowSwipe)
        mAllowSwipe = false;
    else
        mAllowSwipe = true;
}

// ...

private void myTapEvent(){
    // ...

    gestureDetector = new GestureDetector(new GestureDetector.SimpleOnGestureListener() {
        @Override
        public boolean onDoubleTap(MotionEvent e) {
            if (mAllowSwipe) {
                return false;
            }
            count++;
            doTaskHere();
            return true;
        }
        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            if (!mAllowSwipe) {
                return false;
            }
            // Your logic here
        }
    });
}

// ...

There are some examples of swipe using fling here and here, and there’s plenty more if you scour Google a bit.