Android：事件ACTION_POWER_CONNECTED未发送到我的BroadcastReceiver

public class ChargingOnReceiver extends BroadcastReceiver { 
    public void onReceive(Context context,Intent intent) { 
        context.startActivity(someActivity);
        Log.d(tag,"Phone was connected to power");
    } 
}

我希望我的接收器能够监听android.intent.action.ACTION_POWER_CONNECTED,所以我把它放到了清单中：

<reciever android:name=".ChargingOnReceiver"
          android:enabled="true"
          android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.ACTION_POWER_CONNECTED" />
    </intent-filter>
</reciever>

但是当我把G1放到充电器上时,ChargingOnReceiver显然没有启动@H_673_2@(通过USB线连接到我的笔记本电脑).任何帮助深表感谢.