请问 FlutterJPush.addReceiveCustomMsgListener 之后接收不到消息是怎么回事呐？

[xujiyou]

FlutterJPush.addReceiveCustomMsgListener((JPushMessage msg) { print(msg.message); setState(() { print("收到推送消息提醒: $msg"); }); });
打印不出消息，但是会打印：
D/JPushReceiver(23526): JPushReceiver