求教个广播的问题
新手求教个广播的问题。
InstallReceiver receiver = new InstallReceiver();
IntentFilter filter = new IntentFilter();
registerReceiver(receiver, filter);

class InstallReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
if(intent.getAction().equals(Intent.ACTION_PACKAGE_ADDED)){
String packName = intent.getDataString().substring(8);

System.out.println(packName);

}
}
}

这样写有什么问题吗，最后广播没反映啊。