Android实现广播监听HOME键操作，android监听home键,先写了个Service，

Android实现广播监听HOME键操作，android监听home键,先写了个Service，

先写了个Service，在服务中通过广播来监听HOME键操作:public class HomeService extends Service{private MonitoHomeReceiver mHomeBroadcastReceiver;@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();mHomeBroadcastReceiver = new MonitoHomeReceiver();/*** Android对屏幕下方常用按键消息处理是不一致的：* 1、搜索按键的消息在onKeyDown或者onKeyUp中接收；* 2、菜单按键的消息在onCreateOptionsMenu、onKeyDown或onKeyUp方法中接收；* 3、返回按键的消息可以在onBackPressed、onKeyDown或onKeyUp方法中接收。* 对于Home按键消息的处理，既不能通过onKeyDown、onKeyUp接收到，android也没有提供专有的方法接收按键消息* 但办法总是有的，点击Home按键时都会发出一个action为Intent.ACTION_CLOSE_SYSTEM_DIALOGS的广播，通过注册它来监听Home按键消息*/IntentFilter homeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);registerReceiver(mHomeBroadcastReceiver, homeFilter);}public class MonitoHomeReceiver extends BroadcastReceiver{final String HOME_DIALOG_REASON = "homereason";final String HOME_DIALOG_REASON_HOME = "homekey";@Overridepublic void onReceive(Context context, Intent intent) {String action = intent.getAction();if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {String reason = intent.getStringExtra(HOME_DIALOG_REASON);if (reason != null &amp;&amp; reason.equals(HOME_DIALOG_REASON_HOME)) {Toast.makeText(getApplicationContext(), "点击Home键", Toast.LENGTH_SHORT).show();return;}}}}@Overridepublic void onDestroy() {unregisterReceiver(mHomeBroadcastReceiver);mHomeBroadcastReceiver = null;super.onDestroy();}}然后在Activity中启动Service:public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);/**按钮点击事件*/findViewById(R.id.test_home_btn).setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(MainActivity.this,HomeService.class);startService(intent);}});}}最后就是个简单的布局文件：<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <Button        android:id="@+id/test_home_btn"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="测试Home键" /></LinearLayout>最后不要忘记在AndroidManifest.xml中用<Service></Service>标签注册HomeService 服务。