checkTouchMove

 public  double distanceBetweenPoints(float x, float y, float a, float b) {
        return Math.sqrt((x - a) * (x - a) + (y - b) * (y - b));
    }
    
    
     public float deltaX(float x1, float x2) {
        return x2 - x1;
    }
    public  float deltaY(float y1, float y2) {
        return y2 - y1;
    }
    public  float getAverage(float a, float b) {
        return (a + b) / 2;
    }
    
    
    
      private void getCoordinates() {
        // get Center of View
        x1 = viewAvali.getX() + viewAvali.getWidth() / 2f;
        y1 = viewAvali.getY() + viewAvali.getHeight() / 2f;

        // get Center of View
        x2 = viewDovomi.getX() + (viewDovomi.getWidth() / 2f);
        y2 = viewDovomi.getY() + viewDovomi.getHeight() / 2f;
        
        }
        
        
        public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_MOVE) {

            if (util.distanceBetweenPoints(x1, y1, event.getX(), event.getY()) <= 50) {
            // touch is in view
            }