android 多个activity 共用一套广播BroadcastReceiver

「爱情、让人受尽委屈。」 2022-07-24 09:28 283阅读 0赞

public abstract class ParentActivity extends Activity {
public static final String ACTION_1 = “com.example.action1”;
public static final String ACTION_2 = “com.example.action2”;

@Override  
protected void onCreate(Bundle savedInstanceState) \{  
    super.onCreate(savedInstanceState);  
    IntentFilter intentFilter = new IntentFilter();  
    intentFilter.addAction(ACTION\_1);  
    intentFilter.addAction(ACTION\_2);  
    registerReceiver(receiver, intentFilter);  
\}  
protected abstract void doAction1();  
protected abstract void doAction2(String arg);  
BroadcastReceiver receiver = new BroadcastReceiver() \{  
    @Override  
    public void onReceive(Context context, Intent intent) \{  
        String action = intent.getAction();  
        if (action.equals(ACTION\_1)) \{  
            doAction1();  
        \} else if (action.equals(ACTION\_2)) \{  
            String arg = intent.getStringExtra("arg");  
            doAction2(arg);  
        \}  
    \}  
\};  
@Override  
protected void onDestroy() \{  
    unregisterReceiver(receiver);  
    super.onDestroy();  
\};