ViewFlipper结合手势OnGestureListener制作的滑动切换效果

文章分类:移动开发Java代码??

1. public?interface?OnGestureListener?{??
2. ????????????????//?Touch?down时触发,?e为down时的MotionEvent??
3. ????????????????boolean?onDown(MotionEvent?e);??
4. ????????????????//?在Touch?down之后一定时间（115ms）触发，e为down时的MotionEvent??
5. ????????????????void?onShowPress(MotionEvent?e);??
6. ????????????????//?Touch?up时触发，e为up时的MotionEvent??
7. ????????????????boolean?onSingleTapUp(MotionEvent?e);??
8. ????????????????//?滑动时触发，e1为down时的MotionEvent，e2为move时的MotionEvent??
9. ????????????????boolean?onScroll(MotionEvent?e1,?MotionEvent?e2,?float?distanceX,?float?distanceY);??
10. ????????????????//?在Touch?down之后一定时间（500ms）触发，e为down时的MotionEvent??
11. ????????????????void?onLongPress(MotionEvent?e);??
12. ????????????????//?滑动一段距离，up时触发，e1为down时的MotionEvent，e2为up时的MotionEvent??
13. ????????????????boolean?onFling(MotionEvent?e1,?MotionEvent?e2,?float?velocityX,?float?velocityY);??
14. }??
15. ???
16. public?interface?OnDoubleTapListener?{??
17. ????????????????//?完成一次单击，并确定没有二击事件后触发（300ms），e为down时的MotionEvent??
18. ????????????????boolean?onSingleTapConfirmed(MotionEvent?e);??
19. ????????????????//?第二次单击down时触发，e为第一次down时的MotionEvent??
20. ????????????????boolean?onDoubleTap(MotionEvent?e);??
21. ????????????????//?第二次单击down,move和up时都触发，e为不同时机下的MotionEvent??
22. ????????????????boolean?onDoubleTapEvent(MotionEvent?e);??
23. }??

实例：?
Java代码??

1. import?android.app.Activity;??
2. import?android.os.Bundle;??
3. import?android.view.GestureDetector;??
4. import?android.view.MotionEvent;??
5. import?android.view.View;??
6. import?android.widget.Button;??
7. import?android.widget.ViewFlipper;??
8. ??
9. public?class?FlingSlideActivity?extends?Activity?implements?GestureDetector.OnGestureListener,GestureDetector.OnDoubleTapListener{??
10. ????private?ViewFlipper?mViewFlipper;??
11. ????private?GestureDetector?mGestureDetector;??
12. ????/**?Called?when?the?activity?is?first?created.?*/??
13. ????@Override??
14. ????public?void?onCreate(Bundle?savedInstanceState)?{??
15. ????????super.onCreate(savedInstanceState);??
16. ????????setContentView(R.layout.main);??
17. ????????mViewFlipper?=?(ViewFlipper)?findViewById(R.id.flipper);??
18. ????????Button?button1?=?(Button)?findViewById(R.id.Button1);?????
19. ????????button1.setOnClickListener(new?View.OnClickListener()?{?????
20. ????????????public?void?onClick(View?view)?{??
21. ????????????????mViewFlipper.showNext();?????
22. ????????????}?????
23. ????????});??
24. ????????Button?button2?=?(Button)?findViewById(R.id.Button2);?????
25. ????????button2.setOnClickListener(new?View.OnClickListener()?{?????
26. ????????????public?void?onClick(View?view)?{??
27. ????????????????mViewFlipper.showNext();?????
28. ????????????}?????
29. ????????});????????
30. ????????Button?button3?=?(Button)?findViewById(R.id.Button3);?????
31. ????????button3.setOnClickListener(new?View.OnClickListener()?{?????
32. ????????????public?void?onClick(View?view)?{??
33. ????????????????mViewFlipper.showNext();?????
34. ????????????}??
35. ????????});??
36. ????????mGestureDetector?=?new?GestureDetector(this);??
37. ????}??
38. ????//别忘了覆盖onTouchEvent方法??
39. ????@Override??
40. ????public?boolean?onTouchEvent(MotionEvent?event)?{??
41. ????????return?mGestureDetector.onTouchEvent(event);??
42. ????}??
43. ????//以下是OnGestureListener需要实现的方法??
44. ????public?boolean?onDown(MotionEvent?e)?{??
45. ????????//?TODO?Auto-generated?method?stub??
46. ????????return?false;??
47. ????}??
48. ????public?boolean?onFling(MotionEvent?e1,?MotionEvent?e2,?float?velocityX,??
49. ????????????float?velocityY)?{??
50. ????????//?TODO?Auto-generated?method?stub??
51. ????????if(e1.getX()?>?e2.getX())?{//向左滑动??
52. ????????????mViewFlipper.setInAnimation(getApplicationContext(),?R.anim.push_left_in);?????
53. ????????????mViewFlipper.setOutAnimation(getApplicationContext(),?R.anim.push_left_out);?????
54. ???????????mViewFlipper.showNext();?????
55. ???????}else?if(e1.getX()?<?e2.getX())?{//向右滑动??
56. ???????????mViewFlipper.setInAnimation(getApplicationContext(),?R.anim.push_right_in);?????
57. ???????????mViewFlipper.setOutAnimation(getApplicationContext(),?R.anim.push_right_out);?????
58. ???????????mViewFlipper.showPrevious();?????
59. ???????}else?{?????
60. ???????????return?false;?????
61. ???????}?????
62. ???????return?true;??
63. ????}??
64. ??
65. ????public?void?onLongPress(MotionEvent?e)?{??
66. ????????//?TODO?Auto-generated?method?stub??
67. ??????????
68. ????}??
69. ??
70. ????public?boolean?onScroll(MotionEvent?e1,?MotionEvent?e2,?float?distanceX,??
71. ????????????float?distanceY)?{??
72. ????????//?TODO?Auto-generated?method?stub??
73. ????????return?false;??
74. ????}??
75. ??
76. ????public?void?onShowPress(MotionEvent?e)?{??
77. ????????//?TODO?Auto-generated?method?stub??
78. ??????????
79. ????}??
80. ??
81. ????public?boolean?onSingleTapUp(MotionEvent?e)?{??
82. ????????//?TODO?Auto-generated?method?stub??
83. ????????return?false;??
84. ????}??
85. ????//以下是OnDoubleTapListener需要实现的方法??
86. ????public?boolean?onDoubleTap(MotionEvent?e)?{??
87. ????????//?TODO?Auto-generated?method?stub??
88. ???????????mViewFlipper.startFlipping();?//双击自动切换界面??
89. ???????????return?true;??
90. ????}??
91. ????public?boolean?onDoubleTapEvent(MotionEvent?e)?{??
92. ????????//?TODO?Auto-generated?method?stub??
93. ????????return?false;??
94. ????}??
95. ????public?boolean?onSingleTapConfirmed(MotionEvent?e)?{??
96. ????????//?TODO?Auto-generated?method?stub??
97. ????????if(mViewFlipper.isFlipping()){?//单击结束自动切换??
98. ????????????mViewFlipper.stopFlipping();??
99. ????????}??
100. ????????return?false;??
101. ????}??
102. font-size: 1em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 38px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; border-left-width: 1px; border-left-style: