1 setOnTouchListener(new OnTouchListener() {
2 private float startX, startY, offsetX, offsetY;
3
4 @Override
5 public boolean onTouch(View v, MotionEvent event) {
6 switch (event.getAction()) {
7 case MotionEvent.ACTION_DOWN:
8 startX = event.getX();
9 startY = event.getY();
10 break;
11 case MotionEvent.ACTION_UP:
12 offsetX = event.getX() - startX;
13 offsetY = event.getY() - startY;
14 if (Math.abs(offsetX) > Math.abs(offsetY)) {
15 if (offsetX < -5) { // left
16 swipeLeft();
17 } else if (offsetX > 5) { // right
18 swipeRight();
19 }
20 } else {
21 if (offsetY < -5) { // up
22 swipeUp();
23 } else if (offsetY > 5) { // down
24 swipeDown();
25 }
26 }
27 break;
28 default:
29 break;
30 }
31 return true;
32 }
33 });
