利用广播在activity之间传递数据问题

Question

我想利用广播在activity之间传递数据（不是直接用intent传递bundle），代码如下：
MainActivity：

public class MainActivity extends Activity{
private Button mButton;

@override
protected void onCreate(Bundle savedInstanceState){
   super.onCreate(savedInstanceState);

   setContentView(R.layout.activity_main);
   mButton = (Button)findViewById(R.id.button);

   mButton.setOnClickListenner(new OnClickListener(){
       @override
       public void onClick(View v){
            
           Intent broadIntent = new Intent("com.example.broadcasttest");
           broadIntent.putExtra("position", 3);

           sendBroadcast(broadIntent);

           startActivity(new Intent(MainActivity.this, SecondActivity.class));        }
   });
}

}

SecondActivity:

public class SecondActivity extends Activity{
private int position;

@override
protected void onCreate(Bundle savedInstanceState){
   super.onCreate(savedInstanceState);

   setContentView(R.layout.activity_second);

   IntenFilter filter = new IntenFilter("com.example.broadcasttest");
   registerReceiver(receiver, filter);
}

BroadcastReceiver receiver = new BroadcastReceiver(){
   @override
   public void OnReceive(Context context, Intent intent){
       position = intent.getIntExtra("position", 0);
       Log.e("","position-->"+position);
   }
}

@override
protected void onDestroy(){
   super.OnDestroy();
   unRegisterReceiver(receiver);
}

}
广播接收不到，请问是什么问题，谢谢。