Android中监听开机、Home键广播

1.监听开机广播，可实现开机自启

a、清单文件中注册广播
<receiver
   android:name=".service.MyReceiver"
   android:enabled="true"
   android:exported="true">
   <intent-filter android:priority="1000">
   <action android:name="android.intent.action.BOOT_COMPLETED"/>
      <action android:name="android.intent."/>
   </intent-filter>
</receiver>

b、广播接收器接收广播
public class MyReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")){
            //在这里可以去打开你的应用
            Intent i = new Intent(context, LoginActivity.class);
            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(i);
        }
    }
}

2.监听Home键广播

因为点击Home键或者MENU键在应用内，通过onKeyDown或者onKeyUp是监听不到的；所以要想监听它的状态则需要使用广播

a、Home键的广播监听需要在代码中注册，8.0以上在清单文件中注册好像是收不到的
MyReceiver mHomeKeyReceiver = new MyReceiver();
IntentFilter homeFilter = new IntentFilter();
homeFilter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
context.registerReceiver(mHomeKeyReceiver, homeFilter);

b、广播接收器中进行自己的处理
public class MyReceiver extends BroadcastReceiver {
    final String SYSTEM_DIALOG_REASON_KEY = "reason";
    final String SYSTEM_DIALOG_REASON_GLOBAL_ACTIONS = "globalactions";
    final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
    final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")){
            Intent i = new Intent(context, LoginActivity.class);
            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(i);
        }else{
            String action = intent.getAction();
            if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
                String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
                if (reason != null) {
                    if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {
                        //按home键，自己的处理
                    } else if (reason
                            .equals(SYSTEM_DIALOG_REASON_RECENT_APPS)) {
                    }
                }
            }
        }
    }
}