home键拦截

代码:

 public class HomeKeyReceiver extends BroadcastReceiver {

         private static final String LOG_TAG = "HomeReceiver";
         private static final String SYSTEM_DIALOG_REASON_KEY = "reason";
         private static final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps";
         private static final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";
         private static final String SYSTEM_DIALOG_REASON_LOCK = "lock";
         private static final String SYSTEM_DIALOG_REASON_ASSIST = "assist";

         @Override
         public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
             Log.i(LOG_TAG, "onReceive: action: " + action);
             if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
                 // android.intent.action.CLOSE_SYSTEM_DIALOGS
                 String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);
                 Log.i(LOG_TAG, "reason: " + reason);
                 if (SYSTEM_DIALOG_REASON_HOME_KEY.equals(reason)) {
                     // 短按Home键
                 }
                 else if (SYSTEM_DIALOG_REASON_RECENT_APPS.equals(reason)) {
                     // 长按Home键 或者 activity切换键
                 }
                 else if (SYSTEM_DIALOG_REASON_LOCK.equals(reason)) {
                     // 锁屏
                 }
                 else if (SYSTEM_DIALOG_REASON_ASSIST.equals(reason)) {
                     // samsung 长按Home键
                 }
             }
         }
     }
     private HomeKeyReceiver mHomeKeyReceiver ;
     private  void registerHomeKeyReceiver(Context context) {
         mHomeKeyReceiver = new HomeKeyReceiver();
         final IntentFilter homeFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);

         context.registerReceiver(mHomeKeyReceiver, homeFilter);
     }

     private void unregisterHomeKeyReceiver(Context context) {
         if (null != mHomeKeyReceiver) {
             context.unregisterReceiver(mHomeKeyReceiver);
         }
     }