我用的是Fragment ， 发送写在一个类中，接收写在另外一个类的内部类中。代码动态实现注册。
代码：
myReceiver = new zcd.netanything.MyCar.myReceiver();
IntentFilter filter = new IntentFilter();
//向过滤器中添加action
filter.addAction("zcd.netanything");
//注册广播
getActivity().registerReceiver(myReceiver, filter);
//broadcast
Intent intent=new Intent();
intent.putExtra("wifiurl",wifiurl.getText().toString());
intent.putExtra("wificom",wificom.getText().toString());
intent.putExtra("wificamera",wificamera.getText().toString());
intent.setAction("zcd.netanything");
getActivity().sendBroadcast(intent);
博客来源：http://www.cnblogs.com/xiaobo-Linux/ 小波linux qq463431476 (赵存档)
内部类：
//内部类 广播接收
public static class myReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
wifiurl = intent.getStringExtra("wifiurl");
wificom = intent.getStringExtra("wificom");
wificamera = intent.getStringExtra("wificamera");
Toast.makeText(context, "广播已经接收", Toast.LENGTH_SHORT).show();
}
}
这样就可以了。