Android PopupWindow弹出对话框的实现

Java代码  

1. package com.easyway.ui.popupWindow;  
2.   
3. import android.app.Activity;  
4. import android.content.Context;  
5. import android.os.Bundle;  
6. import android.view.Gravity;  
7. import android.view.LayoutInflater;  
8. import android.view.View;  
9. import android.view.View.OnClickListener;  
10. import android.widget.Button;  
11. import android.widget.EditText;  
12. import android.widget.PopupWindow;  
13.   
14. /** 
15.  * PopupWindow弹出对话框的实现 
16.  *  
17.  *              //获取布局管理对象 
18.  *              LayoutInflater inflater = (LayoutInflater)    
19.  *                 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);    
20.  *              //获取相关的自定义布局视图 
21.  *              final View vPopupWindow=inflater.inflate(R.layout.popupwindow, null, false); 
22.  *              //PopupWindow的对话框的弹出 
23.  *              final PopupWindow pw= new PopupWindow(vPopupWindow,300,300,true); 
24.  *         
25.  *         
26.  *         
27.  *                //显示popupWindow对话框 
28.                 pw.showAtLocation(parent, Gravity.CENTER, 0, 0); 
29.  * @author longgangbai 
30.  * 
31.  */  
32. public class AndroidPopupWindowActivity extends Activity {  
33.       
34.             Button btnPopupWindow;  
35.             /** Called when the activity is first created. */  
36.             @Override  
37.             public void onCreate(Bundle savedInstanceState) {  
38.                 super.onCreate(savedInstanceState);  
39.                 setContentView(R.layout.main);  
40.                 //定义按钮  
41.                 btnPopupWindow=(Button)this.findViewById(R.id.Button01);  
42.                 btnPopupWindow.setOnClickListener(new ClickEvent());  
43.             }  
44.               
45.               
46.             //统一处理按键事件  
47.             class ClickEvent implements OnClickListener{  
48.   
49.                 @Override  
50.                 public void onClick(View v) {  
51.                     // TODO Auto-generated method stub  
52.                     if(v==btnPopupWindow)  
53.                     {  
54.                         showPopupWindow(AndroidPopupWindowActivity.this,  
55.                                 AndroidPopupWindowActivity.this.findViewById(R.id.Button01));  
56.                     }  
57.                 }  
58.             }  
59.   
60.             /** 
61.              * 显示相关的PopupWindow对话框 
62.              * @param context 
63.              * @param parent 
64.              */  
65.             public void showPopupWindow(Context context,View parent){  
66.                 //获取布局管理对象  
67.                 LayoutInflater inflater = (LayoutInflater)     
68.                    context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);     
69.                 //获取相关的自定义布局视图  
70.                 final View vPopupWindow=inflater.inflate(R.layout.popupwindow, null, false);  
71.                 //PopupWindow的对话框的弹出  
72.                 final PopupWindow pw= new PopupWindow(vPopupWindow,300,300,true);  
73.   
74.                 //OK按钮及其处理事件  
75.                 Button btnOK=(Button)vPopupWindow.findViewById(R.id.BtnOK);  
76.                 btnOK.setOnClickListener(new OnClickListener(){  
77.                     @Override  
78.                     public void onClick(View v) {  
79.                         //设置文本框内容  
80.                         EditText edtUsername=(EditText)vPopupWindow.findViewById(R.id.username_edit);  
81.                         edtUsername.setText("username");  
82.                         EditText edtPassword=(EditText)vPopupWindow.findViewById(R.id.password_edit);  
83.                         edtPassword.setText("password");  
84.                     }  
85.                 });  
86.                   
87.               //Cancel按钮及其处理事件  
88.                 Button btnCancel=(Button)vPopupWindow.findViewById(R.id.BtnCancel);  
89.                 btnCancel.setOnClickListener(new OnClickListener(){  
90.                     @Override  
91.                     public void onClick(View v) {  
92.                         pw.dismiss();//关闭  
93.                     }  
94.                 });  
95.                 //显示popupWindow对话框  
96.                 pw.showAtLocation(parent, Gravity.CENTER, 0, 0);  
97.             }  
98.               
99.         }