Android中 Popwindow的使用

1.使用 popwindow实现如下效果：

2.代码如下：MainActivity.java

 

[java] view plaincopy

1. package mtpop.window.main;  
2.   
3. import android.app.Activity;  
4. import android.content.Context;  
5. import android.content.res.Resources;  
6. import android.os.Bundle;  
7. import android.view.Gravity;  
8. import android.view.LayoutInflater;  
9. import android.view.View;  
10. import android.view.View.OnClickListener;  
11. import android.view.ViewGroup.LayoutParams;  
12. import android.widget.Button;  
13. import android.widget.LinearLayout;  
14. import android.widget.PopupWindow;  
15. import android.widget.PopupWindow.OnDismissListener;  
16. import android.widget.TextView;  
17.   
18. public class MainActivity extends Activity  
19. {  
20.   
21.     private static final String TAG = "MainActivity";  
22.     private Button button;  
23.   
24.     @Override  
25.     public void onCreate(Bundle savedInstanceState)  
26.     {  
27.         super.onCreate(savedInstanceState);  
28.         setContentView(R.layout.main);  
29.   
30.         button = (Button) findViewById(R.id.button);  
31.         button.setOnClickListener(new OnClickListener()  
32.         {  
33.             @Override  
34.             public void onClick(View v)  
35.             {  
36.                 // 显示 popupWindow   
37.                 PopupWindow popupWindow = makePopupWindow(MainActivity.this);  
38.                 int[] xy = new int[2];  
39.                 button.getLocationOnScreen(xy);  
40.                 popupWindow.showAtLocation(button,Gravity.RIGHT|Gravity.TOP,-xy[0]/2,xy[1]+button.getWidth());  
41.                 //popupWindow.showAsDropDown(button,0, 0);   
42.             }  
43.         });  
44.     }  
45.   
46.     // 创建一个包含自定义view的PopupWindow   
47.     private PopupWindow makePopupWindow(Context cx)  
48.     {  
49.         PopupWindow window;  
50.         window = new PopupWindow(cx);  
51.           
52.         //View contentView = LayoutInflater.from(this).inflate(R.layout.popwindow, null);   
53.         //window.setContentView(contentView);   
54.         Button b1 = new Button(this);  
55.         b1.setText("first");  
56.         b1.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));  
57.           
58.         Button b2 = new Button(this);  
59.         b2.setText("Second");  
60.         b2.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));  
61.           
62.         LinearLayout linearLayout = new LinearLayout(this);  
63.         linearLayout.addView(b1);  
64.         linearLayout.addView(b2);  
65.         linearLayout.setOrientation(LinearLayout.VERTICAL);  
66.           
67.         window.setContentView(linearLayout);  
68.         window.setBackgroundDrawable(getResources().getDrawable(R.drawable.pop_bg));  
69.         window.setWidth(DisplayManager.dipToPixel(150));  
70.         window.setHeight(DisplayManager.dipToPixel(150));  
71.           
72.         // 设置PopupWindow外部区域是否可触摸   
73.         window.setFocusable(true); //设置PopupWindow可获得焦点   
74.         window.setTouchable(true); //设置PopupWindow可触摸   
75.         window.setOutsideTouchable(true); //设置非PopupWindow区域可触摸   
76.         return window;  
77.     }  
78. }  

1. package mtpop.window.main;

2.  

3. import android.app.Activity;

4. import android.content.Context;

5. import android.content.res.Resources;

6. import android.os.Bundle;

7. import android.view.Gravity;

8. import android.view.LayoutInflater;

9. import android.view.View;

10. import android.view.View.OnClickListener;

11. import android.view.ViewGroup.LayoutParams;

12. import android.widget.Button;

13. import android.widget.LinearLayout;

14. import android.widget.PopupWindow;

15. import android.widget.PopupWindow.OnDismissListener;

16. import android.widget.TextView;

17.  

18. public class MainActivity extends Activity

19. {

20.  

21. private static final String TAG = "MainActivity";

22. private Button button;

23.  

24. @Override

25. public void onCreate(Bundle savedInstanceState)

26. {

27. super.onCreate(savedInstanceState);

28. setContentView(R.layout.main);

29.  

30. button = (Button) findViewById(R.id.button);

31. button.setOnClickListener(new OnClickListener()

32. {

33. @Override

34. public void onClick(View v)

35. {

36. // 显示 popupWindow

37. PopupWindow popupWindow = makePopupWindow(MainActivity.this);

38. int[] xy = new int[2];

39. button.getLocationOnScreen(xy);

40. popupWindow.showAtLocation(button,Gravity.RIGHT|Gravity.TOP,-xy[0]/2,xy[1]+button.getWidth());

41. //popupWindow.showAsDropDown(button,0, 0);

42. }

43. });

44. }

45.  

46. // 创建一个包含自定义view的PopupWindow

47. private PopupWindow makePopupWindow(Context cx)

48. {

49. PopupWindow window;

50. window = new PopupWindow(cx);

51.  

52. //View contentView = LayoutInflater.from(this).inflate(R.layout.popwindow, null);

53. //window.setContentView(contentView);

54. Button b1 = new Button(this);

55. b1.setText("first");

56. b1.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));

57.  

58. Button b2 = new Button(this);

59. b2.setText("Second");

60. b2.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));

61.  

62. LinearLayout linearLayout = new LinearLayout(this);

63. linearLayout.addView(b1);

64. linearLayout.addView(b2);

65. linearLayout.setOrientation(LinearLayout.VERTICAL);

66.  

67. window.setContentView(linearLayout);

68. window.setBackgroundDrawable(getResources().getDrawable(R.drawable.pop_bg));

69. window.setWidth(DisplayManager.dipToPixel(150));

70. window.setHeight(DisplayManager.dipToPixel(150));

71.  

72. // 设置PopupWindow外部区域是否可触摸

73. window.setFocusable(true); //设置PopupWindow可获得焦点

74. window.setTouchable(true); //设置PopupWindow可触摸

75. window.setOutsideTouchable(true); //设置非PopupWindow区域可触摸

76. return window;

77. }

78. }

3. main.xml

 

 

[html] view plaincopy

1. <?xml version="1.0" encoding="utf-8"?>  
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
3.     android:layout_width="fill_parent"  
4.     android:layout_height="fill_parent"  
5.     android:orientation="vertical" >  
6.   
7.     <LinearLayout  
8.         android:layout_width="fill_parent"  
9.         android:layout_height="wrap_content"  
10.         android:background="@android:color/darker_gray"  
11.         android:orientation="horizontal" >  
12.   
13.         <TextView  
14.             android:layout_width="fill_parent"  
15.             android:layout_height="wrap_content"  
16.             android:layout_weight="1"  
17.             android:text="Title" />  
18.   
19.         <Button  
20.             android:id="@+id/button"  
21.             android:layout_width="wrap_content"  
22.             android:layout_height="wrap_content"  
23.             android:text="click" />  
24.     </LinearLayout>  
25.   
26. </LinearLayout>  

1. <?xml version="1.0" encoding="utf-8"?>

2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

3. android:layout_width="fill_parent"

4. android:layout_height="fill_parent"

5. android:orientation="vertical" >

6.  

7. <LinearLayout

8. android:layout_width="fill_parent"

9. android:layout_height="wrap_content"

10. android:background="@android:color/darker_gray"

11. android:orientation="horizontal" >

12.  

13. <TextView

14. android:layout_width="fill_parent"

15. android:layout_height="wrap_content"

16. android:layout_weight="1"

17. android:text="Title" />

18.  

19. <Button

20. android:id="@+id/button"

21. android:layout_width="wrap_content"

22. android:layout_height="wrap_content"

23. android:text="click" />

24. </LinearLayout>

25.  

26. </LinearLayout>

注意：   

 

     * 新建一个popupWindow弹出框 popupWindow是一个阻塞式的弹出框，这就意味着在我们退出这个弹出框之前，程序会一直等待，    

     * 这和AlertDialog不同哦，AlertDialog是非阻塞式弹出框，AlertDialog弹出的时候，后台可是还可以做其他事情的哦。     *

 

 

******************************************************************

1.PopupWindow的隐藏

  

[java] view plaincopy

1. final PopupWindow window = mPageStatWin;  
2. if(null != window && window.isShowing()) {  
3.     win.dismiss();  
4. }  

1. final PopupWindow window = mPageStatWin;

2. if(null != window && window.isShowing()) {

3. win.dismiss();

4. }

2.Popupwindow的显示及位置设置

 

window.showAtLocation(parent, Gravity.RIGHT | Gravity.BOTTOM, 10,10);

 

第一个参数指定PopupWindow的锚点view，即依附在哪个view上。

第二个参数指定起始点为parent的右下角，第三个参数设置以parent的右下角为原点，向左、上各偏移10像素。

 

   

//将PopupWindow作为anchor的下拉窗口显示。即在anchor的左下角显示
window.showAsDropDown(anchor);
//xoff,yoff基于anchor的左下角进行偏移。
window.showAsDropDown(anchor, xoff, yoff);

如果没有充足的空间显示PopupWindow，那么PopupWindow的左下角将位于anchor的左上角来显示。

 

 

 

         * popupWindow.showAsDropDown（View view）弹出对话框，位置在紧挨着view组件    

         * showAsDropDown(View anchor, int xoff, int yoff)弹出对话框，位置在紧挨着view组件，x y 代表着偏移量     

         * showAtLocation(View parent, int gravity, int x, int y)弹出对话框 

          * parent 父布局 gravity 依靠父布局的位置如Gravity.CENTER  x y 坐标值         

 

[java] view plaincopy

1. window.setWidth(DisplayManager.dipToPixel(150));  
2. window.setHeight(DisplayManager.dipToPixel(150));  
3.   
4. // 设置PopupWindow外部区域是否可触摸   
5. window.setFocusable(true); //设置PopupWindow可获得焦点   
6. window.setTouchable(true); //设置PopupWindow可触摸   
7. window.setOutsideTouchable(true); //设置非PopupWindow区域可触摸  

1. window.setWidth(DisplayManager.dipToPixel(150));

2. window.setHeight(DisplayManager.dipToPixel(150));

3.  

4. // 设置PopupWindow外部区域是否可触摸

5. window.setFocusable(true); //设置PopupWindow可获得焦点

6. window.setTouchable(true); //设置PopupWindow可触摸

7. window.setOutsideTouchable(true); //设置非PopupWindow区域可触摸

        设置其可以获得焦点，可触摸，外部区域可触摸(很重要)