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11.import android.view.WindowManager;
12.import android.widget.ImageView;
13.
14.public class WindowManagerTest extends Activity {
15. /** Called when the activity is first created. */
16.
17. private float mPosX;
18. private float mPosY;
19.
20. Bitmap bitmap;
21.
22. WindowManager.LayoutParams mWindowParams;
23.
24. WindowManager mWindowManager;
25.
26. ImageView v;
27.
28. @Override
29. public void onCreate(Bundle savedInstanceState) {
30. super.onCreate(savedInstanceState);
31.
32. setContentView(R.layout.main);
33.
34. bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.button);
35.
36. addViewToWindowManage(bitmap, 200, 200);
37. }
38.
39. public boolean onTouchEvent(MotionEvent motion){
40. switch(motion.getAction()){
41. case MotionEvent.ACTION_DOWN:
42. mPosX = motion.getX();
43. mPosY = motion.getY();
44. return true;
45. case MotionEvent.ACTION_MOVE:
46. mPosX = motion.getX();
47. mPosY = motion.getY();
48. updateViewPosition(v, (int)mPosX,(int) mPosY);
49. return true;
50. case MotionEvent.ACTION_UP:
51. removeView(v);
52. return true;
53. }
54.
55. return true;
56. }
57.
58. void addViewToWindowManage(Bitmap bm, int x, int y) {
59. mWindowParams = new WindowManager.LayoutParams();
60. mWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
61. mWindowParams.x = x;
62. mWindowParams.y = y;
63. mWindowParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
64. mWindowParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
65. mWindowParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
66. | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
67. | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
68. | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
69. mWindowParams.format = PixelFormat.TRANSLUCENT;
70. mWindowParams.windowAnimations = 0;
71. v = new ImageView(this);
72. v.setImageBitmap(bm);
73. mWindowManager = (WindowManager) this.getSystemService("window");
74. mWindowManager.addView(v, mWindowParams);
75. }
76.
77. void updateViewPosition(View v,int x,int y){
78. mWindowParams.alpha = 1.0f;
79. mWindowParams.x = x ;
80. mWindowParams.y = y;
81. mWindowManager.updateViewLayout(v, mWindowParams);
82. }
83.
84. void removeView(View v){
85. mWindowManager.removeView(v);;
86. }
87.}
代码包下载地址：http-://download.csdn.-net/source/3521066
LauncherApplication中有变量，一个是LauncherModel，一个是IconCache。在本类中生成LauncherModel对象，作为全局使用的操作数据的对象,并且为Launcher注册了相应的广播，一种是package的remove,update,add,还有快捷方式的Observer,在有快捷方式的变动，重新load。IconCache,是为程序的快捷方式提供默认的图标。
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