废话不多说，先看效果图：
这是主Activity代码：
[java]
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1. public class RollActivity extends Activity {
2. private View view;
3. private Button btn;
4. private PopupWindow mPopupWindow;
5. private View[] btns;
6. /** Called when the activity is first created. */
7. @Override
8. public void onCreate(Bundle savedInstanceState) {
9. super.onCreate(savedInstanceState);
10. setContentView(R.layout.main);
11. // LinearLayout layout=(LinearLayout) view.findViewById(R.id.layout_main);
12. // //设置背景图片旋转180
13. // Bitmap mBitmap=setRotate(R.drawable.bg_kuang);
14. // BitmapDrawable drawable=new BitmapDrawable(mBitmap);
15. // layout.setBackgroundDrawable(drawable);
16.
17. this.findViewById(R.id.btn);
18. new OnClickListener(){
19.
20. @Override
21. public void onClick(View v) {
22. // TODO Auto-generated method stub
23. showPopupWindow(btn);
24. }
25.
26. });
27.
28. initPopupWindow(R.layout.popwindow);
29.
30. }
31.
32. private void initPopupWindow(int resId){
33. LayoutInflater mLayoutInflater = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
34. null);
35.
36. new PopupWindow(view, 400,LayoutParams.WRAP_CONTENT);
37. // mPopupWindow.setBackgroundDrawable(new BitmapDrawable());//必须设置background才能消失
38. mPopupWindow.setBackgroundDrawable(getResources().getDrawable(R.drawable.bg_frame));
39. true);
40.
41. //自定义动画
42. // mPopupWindow.setAnimationStyle(R.style.PopupAnimation);
43. //使用系统动画
44. mPopupWindow.setAnimationStyle(android.R.style.Animation_Dialog);
45. mPopupWindow.update();
46. true);
47. true);
48.
49. new View[3];
50. 0]=view.findViewById(R.id.btn_0);
51. 1]=view.findViewById(R.id.btn_1);
52. 2]=view.findViewById(R.id.btn_2);
53. 0].setOnClickListener(new OnClickListener() {
54.
55. @Override
56. public void onClick(View v) {
57. // TODO Auto-generated method stub
58. //doSomething
59. }
60. });
61. 1].setOnClickListener(new OnClickListener() {
62.
63. @Override
64. public void onClick(View v) {
65. // TODO Auto-generated method stub
66. //doSomething
67. }
68. });
69. 2].setOnClickListener(new OnClickListener() {
70.
71. @Override
72. public void onClick(View v) {
73. // TODO Auto-generated method stub
74. //doSomething
75. }
76. });
77. }
78. private void showPopupWindow(View view) {
79. if(!mPopupWindow.isShowing()){
80. // mPopupWindow.showAsDropDown(view,0,0);
81. 0, 0);
82. }
83. }
84. public Bitmap setRotate(int resId) {
85. new Matrix();
86. Bitmap mFgBitmap = BitmapFactory.decodeResource(getResources(), resId);
87. mFgMatrix.setRotate(180f);
88. return mFgBitmap=Bitmap.createBitmap(mFgBitmap, 0, 0,
89. true);
90. }
91. }
PopupWindow的布局popwindow.xml
注意3个LinearLayout里必须设置clickable和background，这样当点击上去的时候才会有点击效果。
android:clickable="true"
android:background="@drawable/state_btn_pressed"
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1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout
3. xmlns:android="http://schemas.android.com/apk/res/android"
4. android:layout_width="fill_parent"
5. android:layout_height="wrap_content"
6. android:orientation="horizontal"
7. android:id="@+id/layout_main"
8. >
9. <LinearLayout android:layout_width="fill_parent"
10. android:layout_height="wrap_content"
11. android:orientation="vertical"
12. android:gravity="center_horizontal"
13. android:clickable="true"
14. android:background="@drawable/state_btn_pressed"
15. android:layout_weight="1"
16. android:id="@+id/btn_0"
17. >
18. <ImageView android:layout_width="wrap_content"
19. android:layout_height="wrap_content"
20. android:scaleType="fitCenter"
21. android:src="@drawable/ic_call"
22. >
23. </ImageView>
24. <TextView android:layout_width="wrap_content"
25. android:layout_height="wrap_content"
26. android:textColor="#000000"
27. android:textSize="18px"
28. android:text="电话">
29. </TextView>
30. </LinearLayout>
31. <LinearLayout android:layout_width="fill_parent"
32. android:layout_height="wrap_content"
33. android:orientation="vertical"
34. android:gravity="center_horizontal"
35. android:clickable="true"
36. android:background="@drawable/state_btn_pressed"
37. android:layout_weight="1"
38. android:id="@+id/btn_1"
39. >
40. <ImageView android:layout_width="wrap_content"
41. android:layout_height="wrap_content"
42. android:scaleType="fitCenter"
43. android:src="@drawable/ic_home"
44. >
45. </ImageView>
46. <TextView android:layout_width="wrap_content"
47. android:layout_height="wrap_content"
48. android:textColor="#000"
49. android:textSize="18px"
50. android:text="空间">
51. </TextView>
52. </LinearLayout>
53.
54. <LinearLayout android:layout_width="fill_parent"
55. android:layout_height="wrap_content"
56. android:orientation="vertical"
57. android:gravity="center_horizontal"
58. android:clickable="true"
59. android:background="@drawable/state_btn_pressed"
60. android:layout_weight="1"
61. android:id="@+id/btn_2"
62. >
63. <ImageView android:layout_width="wrap_content"
64. android:layout_height="wrap_content"
65. android:scaleType="fitCenter"
66. android:src="@drawable/ic_sms"
67. >
68. </ImageView>
69. <TextView android:layout_width="wrap_content"
70. android:layout_height="wrap_content"
71. android:textColor="#000"
72. android:textSize="18px"
73. android:text="短信"
74. >
75. </TextView>
76. </LinearLayout>
77. </LinearLayout>
state_btn_pressed.xml，点击的效果：
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1. <?xml version="1.0" encoding="utf-8"?>
2. <selector xmlns:android="http://schemas.android.com/apk/res/android">
3. <item android:state_pressed="true"
4. android:drawable="@drawable/bg_btn_pressed"
5. android:padding="0dp"/>
6. </selector>
Android 模仿迅雷的 PopupWindow 出现/消失动画
出现：
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1. <?xml version="1.0" encoding="utf-8"?>
2. <set xmlns:android="http://schemas.android.com/apk/res/android">
3. <scale android:fromXScale="0.6" android:toXScale="1.1"
4. android:fromYScale="0.6" android:toYScale="1.1" android:pivotX="50%"
5. android:pivotY="50%" android:duration="200" />
6. <scale android:fromXScale="1.0" android:toXScale="0.91"
7. android:fromYScale="1.0" android:toYScale="0.91" android:pivotX="50%"
8. android:pivotY="50%" android:duration="400" android:delay="200" />
9. <alpha android:interpolator="@android:anim/linear_interpolator"
10. android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="400" />
11. </set>
消失：
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1. <?xml version="1.0" encoding="utf-8"?>
2. <set xmlns:android="http://schemas.android.com/apk/res/android">
3. <scale android:fromXScale="1.0" android:toXScale="1.25"
4. android:fromYScale="1.0" android:toYScale="1.25" android:pivotX="50%"
5. android:pivotY="50%" android:duration="200" />
6. <scale android:fromXScale="1.0" android:toXScale="0.48"
7. android:fromYScale="1.0" android:toYScale="0.48" android:pivotX="50%"
8. android:pivotY="50%" android:duration="400" android:delay="200" />
9. <alpha android:interpolator="@android:anim/linear_interpolator"
10. android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="400" />
11. </set>
最后用下面的 XML 封装：
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1. <?xml version="1.0" encoding="utf-8"?>
2. <resources>
3. <style name="PopupAnimation" parent="android:Animation"
4. mce_bogus="1">
5. <item name="android:windowEnterAnimation">@anim/anim_dialog_show</item>
6. <item name="android:windowExitAnimation">@anim/anim_dialog_hide</item>
7. </style>
8. </resources>
