android home键监听

注册监听

可以在Activity里注册，也可以在Service里面

[java] view plaincopyprint?

1. //注册广播   
2.         registerReceiver(mHomeKeyEventReceiver, new IntentFilter(  
3.                 Intent.ACTION_CLOSE_SYSTEM_DIALOGS));  

//注册广播registerReceiver(mHomeKeyEventReceiver, new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));

完整的代码如下：

[java] view plaincopyprint?

1. package com.example.homedemo;  
2.   
3. import android.os.Bundle;  
4. import android.app.Activity;  
5. import android.content.BroadcastReceiver;  
6. import android.content.Context;  
7. import android.content.Intent;  
8. import android.content.IntentFilter;  
9. import android.text.TextUtils;  
10. import android.view.Menu;  
11. import android.widget.Toast;  
12.   
13. public class MainActivity extends Activity {  
14.   
15.     @Override  
16.     protected void onCreate(Bundle savedInstanceState) {  
17.         super.onCreate(savedInstanceState);  
18.         setContentView(R.layout.activity_main);  
19.         //注册广播   
20.         registerReceiver(mHomeKeyEventReceiver, new IntentFilter(  
21.                 Intent.ACTION_CLOSE_SYSTEM_DIALOGS));  
22.     }  
23.   
24.        
25.     /** 
26.      * 监听是否点击了home键将客户端推到后台 
27.      */  
28.     private BroadcastReceiver mHomeKeyEventReceiver = new BroadcastReceiver() {  
29.         String SYSTEM_REASON = "reason";  
30.         String SYSTEM_HOME_KEY = "homekey";  
31.         String SYSTEM_HOME_KEY_LONG = "recentapps";  
32.            
33.         @Override  
34.         public void onReceive(Context context, Intent intent) {  
35.             String action = intent.getAction();  
36.             if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {  
37.                 String reason = intent.getStringExtra(SYSTEM_REASON);  
38.                 if (TextUtils.equals(reason, SYSTEM_HOME_KEY)) {  
39.                      //表示按了home键,程序到了后台  
40.                     Toast.makeText(getApplicationContext(), "home", 1).show();  
41.                 }else if(TextUtils.equals(reason, SYSTEM_HOME_KEY_LONG)){  
42.                     //表示长按home键,显示最近使用的程序列表  
43.                 }  
44.             }   
45.         }  
46.     };  
47. }  

package com.example.homedemo;import android.os.Bundle;import android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.text.TextUtils;import android.view.Menu;import android.widget.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//注册广播registerReceiver(mHomeKeyEventReceiver, new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));} /** * 监听是否点击了home键将客户端推到后台 */private BroadcastReceiver mHomeKeyEventReceiver = new BroadcastReceiver() {String SYSTEM_REASON = "reason";String SYSTEM_HOME_KEY = "homekey";String SYSTEM_HOME_KEY_LONG = "recentapps"; @Overridepublic void onReceive(Context context, Intent intent) {String action = intent.getAction();if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {String reason = intent.getStringExtra(SYSTEM_REASON);if (TextUtils.equals(reason, SYSTEM_HOME_KEY)) { //表示按了home键,程序到了后台Toast.makeText(getApplicationContext(), "home", 1).show();}else if(TextUtils.equals(reason, SYSTEM_HOME_KEY_LONG)){//表示长按home键,显示最近使用的程序列表}} }};}

下面是以前写的监听方式，现在大部分都不好使了，这次作为更新