要实现的效果如图：
代码很简单，主要是TranslateAnimation类的
public TranslateAnimation (int fromXType, float fromXValue, int toXType, float toXValue, int fromYType, float fromYValue, int toYType, float toYValue)
Constructor to use when building a TranslateAnimation from code
Parameters
fromXType | Specifies how fromXValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
fromXValue | Change in X coordinate to apply at the start of the animation. This value can either be an absolute number if fromXType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
toXType | Specifies how toXValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
toXValue | Change in X coordinate to apply at the end of the animation. This value can either be an absolute number if toXType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
fromYType | Specifies how fromYValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
fromYValue | Change in Y coordinate to apply at the start of the animation. This value can either be an absolute number if fromYType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise. |
toYType | Specifies how toYValue should be interpreted. One of Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or Animation.RELATIVE_TO_PARENT. |
toYValue | Change in Y coordinate to apply at the end of the animation. This value can either be an absolute number if toYType is ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise |
代码如下：
1. package com.lenovo.wufl.translateanimationmenu;
2.
3. import android.app.Activity;
4. import android.os.Bundle;
5. import android.view.View;
6. import android.view.View.OnClickListener;
7. import android.view.animation.Animation;
8. import android.view.animation.TranslateAnimation;
9. import android.widget.Button;
10. import android.widget.LinearLayout;
11. import android.widget.TextView;
12.
13. public class TranslateAnimationMenuActivity extends Activity implements
14. OnClickListener {
15. private TextView mMenu;
16. private Button mButton;
17. private TranslateAnimation mShowAnimation;
18. private TranslateAnimation mHideAnimation;
19. private boolean isShow;
20.
21.
22. @Override
23. public void onCreate(Bundle savedInstanceState) {
24. super.onCreate(savedInstanceState);
25. setContentView(R.layout.main);
26.
27. initView();
28. initAnimation();
29. }
30.
31. private void initView() {
32. mMenu = (TextView) findViewById(R.id.menu);
33. mButton = (Button) findViewById(R.id.button);
34. mButton.setOnClickListener(this);
35. mMenu.setVisibility(View.GONE);
36. isShow = false;
37. }
38.
39. private void initAnimation() {
40. // 从自已-1倍的位置移到自己原来的位置
41. mShowAnimation = new TranslateAnimation(Animation.RELATIVE_TO_SELF,
42. 0.0f, Animation.RELATIVE_TO_SELF, 0.0f,
43. Animation.RELATIVE_TO_SELF, -1.0f, Animation.RELATIVE_TO_SELF,
44. 0.0f);
45. mHideAnimation = new TranslateAnimation(Animation.RELATIVE_TO_SELF,
46. 0.0f, Animation.RELATIVE_TO_SELF, 0.0f,
47. Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
48. -1.0f);
49. mShowAnimation.setDuration(500);
50. mHideAnimation.setDuration(500);
51.
52. }
53.
54. @Override
55. public void onClick(View v) {
56. if (v.getId() == R.id.button) {
57. if (isShow) {
58. isShow = false;
59. mMenu.startAnimation(mHideAnimation);
60. mMenu.setVisibility(View.GONE);
61. } else {
62. isShow = true;
63. mMenu.startAnimation(mShowAnimation);
64. mMenu.setVisibility(View.VISIBLE);
65. }
66. }
67. }
68. }
