android ResultReceiver用法

16lz 2021-01-26

ResultReceiver是一个用来接收其他进程回调结果的通用接口。要使用它，你需要创建一个子类并且实现onReceiveResult(int, android.os.Bundle)方法。

在其他线程中可以通过send(int, android.os.Bundle)方法发送数据。

它是一种进程间(IPC)传递信息信息的机制，和广播类似。实现代码：

ResultReceiver receiver = new MyResultReceiver(handler);
Bundle resultData =new Bundle();
resultData.putString(MyResultReceiver.RESULT_KEY, msg)；
receiver.send(MyResultReceiver.RESULT_CODE_ONE, resultData);

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public class MyResultReceiver extends ResultReceiver{
public MyResultReceiver(Handler handler) {
super(handler);
}
@Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
// TODO Auto-generated method stub
super.onReceiveResult(resultCode, resultData);
String msg = resultData.getString(RESULT_KEY);
if(resultCode==RESULT_CODE_ONE){
Log.e("MyResultReceiver", msg);
}else if(resultCode==RESULT_CODE_TWO){
Log.e("MyResultReceiver", msg);
}
}
}

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