Custom Swipe Action

Project : The Path Game

Requirement:  Implement swipe (up,down,left & right) action on the a specific layout.
When users swipes on the layout(in red) the header tile moves in the direction of swipe.

Solution:
Create a View.OnTouchListener set it as the on touch listener for the required layout.

	View.OnTouchListener gestureListener = new View.OnTouchListener() {
	public boolean onTouch(View v, MotionEvent event) {
	switch(event.getAction()){
	case MotionEvent.ACTION_DOWN:
	x1 = event.getX(); //get x-point of finger down
	y1 = event.getY(); //get y-point of finger down
	break;
	case MotionEvent.ACTION_UP:
	x2 = event.getX(); //get x-point of finger up
	y2 = event.getY(); //get x-point of finger up
	dy = y2 - y1; //y distance of swipe
	dx = x2 - x1; //x distance of swipe
	absDX = Math.abs(dx);
	absDY = Math.abs(dy);
	if(absDX < SWIPE_MIN_DISTANCE && absDY < SWIPE_MIN_DISTANCE){
	// y and x distance of swipe should be greater than a minimum value
	}else{
	if(absDX >= absDY){
	if(dx > 0){
	moveRight();
	}else{
	moveLeft();
	}
	}else{
	if(dy > 0){
	moveDown();
	}else{
	moveUp();
	}
	}
	}
	break;
	}
	return true;
	}
	};

view raw custom_swipe hosted with ❤ by GitHub