问题描述

新手学Android的广播，为什么接收不到广播数据，急急急急

我是动态注册的 ，代码如下：
public class LoginActivity extends Activity implements OnClickListener{
public static String ACTION= "ok";
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
button = (Button) findViewById(R.id.bt);
button.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.bt:
//跳转的同时发送广播数据
Intent intent1 = new Intent(this, Activity01.class);
startActivity(intent1);
Intent intent = new Intent(ACTION);
intent.putExtra("info", "hello");
sendBroadcast(intent);
break;
default:
break;
}
}
}

接收者如下：
public class Activity01 extends Activity {
private TextView tv;

private MyBroadcast myBroad;
public static String ACTION = "ok";
private String text;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity01);
    myBroad = new MyBroadcast();
    IntentFilter filter = new IntentFilter(ACTION);
    registerReceiver(myBroad, filter);
    tv = (TextView) findViewById(R.id.tv);
    tv.setText(text);
}

public class MyBroadcast extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        text = intent.getExtras().getString("info");
    }
}

@Override
protected void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
    unregisterReceiver(myBroad);
}

}

为什么我的第二个Activity里接收不到数据呢？求高手指点。

解决方案

广播发过去的时候Activity01的接受者还没注册呢~

解决方案二：

有高手指点下吗？谢谢啦！！！

解决方案三：

有人吗，急急急急急急！