listView.setSelection(0);

1. public class MainActivity extends Activity implements OnTouchListener{
2. private GestureDetector mGestureDetector;
3. @Override
4. protected void onCreate(Bundle savedInstanceState) {
5. super.onCreate(savedInstanceState);
6. setContentView(R.layout.activity_main);
7. mGestureDetector = new GestureDetector(new gestureListener()); //使用派生自OnGestureListener
8. mGestureDetector.setOnDoubleTapListener(new doubleTapListener());
9. TextView tv = (TextView)findViewById(R.id.tv);
10. tv.setOnTouchListener(this);
11. tv.setFocusable(true);
12. tv.setClickable(true);
13. tv.setLongClickable(true);
14. }
15. /*
16. * 在onTouch()方法中，我们调用GestureDetector的onTouchEvent()方法，将捕捉到的MotionEvent交给GestureDetector
17. * 来分析是否有合适的callback函数来处理用户的手势
18. */
19. public boolean onTouch(View v, MotionEvent event) {
20. return mGestureDetector.onTouchEvent(event);
21. }
22. //OnGestureListener监听
23. private class gestureListener implements GestureDetector.OnGestureListener{
24. public boolean onDown(MotionEvent e) {
25. Log.i("MyGesture", "onDown");
26. Toast.makeText(MainActivity.this, "onDown", Toast.LENGTH_SHORT).show();
27. return false;
28. }
29. public void onShowPress(MotionEvent e) {
30. Log.i("MyGesture", "onShowPress");
31. Toast.makeText(MainActivity.this, "onShowPress", Toast.LENGTH_SHORT).show();
32. }
33. public boolean onSingleTapUp(MotionEvent e) {
34. Log.i("MyGesture", "onSingleTapUp");
35. Toast.makeText(MainActivity.this, "onSingleTapUp", Toast.LENGTH_SHORT).show();
36. return true;
37. }
38. public boolean onScroll(MotionEvent e1, MotionEvent e2,
39. float distanceX, float distanceY) {
40. Log.i("MyGesture22", "onScroll:"+(e2.getX()-e1.getX()) +"   "+distanceX);
41. Toast.makeText(MainActivity.this, "onScroll", Toast.LENGTH_LONG).show();
42. return true;
43. }
44. public void onLongPress(MotionEvent e) {
45. Log.i("MyGesture", "onLongPress");
46. Toast.makeText(MainActivity.this, "onLongPress", Toast.LENGTH_LONG).show();
47. }
48. public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
49. float velocityY) {
50. Log.i("MyGesture", "onFling");
51. Toast.makeText(MainActivity.this, "onFling", Toast.LENGTH_LONG).show();
52. return true;
53. }
54. };
55. //OnDoubleTapListener监听
56. private class doubleTapListener implements GestureDetector.OnDoubleTapListener{
57. public boolean onSingleTapConfirmed(MotionEvent e) {
58. Log.i("MyGesture", "onSingleTapConfirmed");
59. Toast.makeText(MainActivity.this, "onSingleTapConfirmed", Toast.LENGTH_LONG).show();
60. return true;
61. }
62. public boolean onDoubleTap(MotionEvent e) {
63. Log.i("MyGesture", "onDoubleTap");
64. Toast.makeText(MainActivity.this, "onDoubleTap", Toast.LENGTH_LONG).show();
65. return true;
66. }
67. public boolean onDoubleTapEvent(MotionEvent e) {
68. Log.i("MyGesture", "onDoubleTapEvent");
69. Toast.makeText(MainActivity.this, "onDoubleTapEvent", Toast.LENGTH_LONG).show();
70. return true;
71. }
72. };
73. }

参考：

用户手势检测-GestureDetector使用详解