Flutter个推推送Android端,退出应用后收到消息报错

场景(Android手机,iOS没有测试)

1.集成getuiflut
2.返回退出APP
3.发送推送透传消息

报错

Tried to send a platform message to Flutter, but FlutterJNI was detached from native C++. Could not send . Channel: getuiflut Response ID: XXX

解决方案

1.重写返回键,使其不退出APP只是让APP进入后台等待

插件类MoveTaskChannel:

class MoveTaskChannel {
  static const String channel = 'move_task';
  static const MethodChannel _methodChannel = MethodChannel(channel);

  static void moveTaskBack() async {
    await _methodChannel.invokeMethod('moveTaskBack');
  }
}

Android端MainActivity:

override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
    GeneratedPluginRegistrant.registerWith(flutterEngine)
    MethodChannel(flutterEngine.dartExecutor, "move_task").setMethodCallHandler { methodCall, result ->
        if (methodCall.method.equals("moveTaskBack")) {
            moveTaskToBack(false);
        }
    }

}

Flutter端退出按键:

return WillPopScope(
  child: Scaffold(
    appBar: AppBar(),
    body: const Center(child: Text('不退出程序,只是返回桌面')),
  ),
  onWillPop: () async {
    if (Platform.isAndroid) {
      MoveTaskChannel.moveTaskBack();
      return false;
    }
    return true;
  },
);

2.重写getuiflut插件里的Android部分,不调用flutter的channel而是在Android端直接处理

clonegetuiflut插件到本地,然后修改Android文件下的 FlutterIntentService类onReceiveMessageData方法:

@Override
public void onReceiveMessageData(Context context, GTTransmitMessage msg) {
    Log.d(TAG, "onReceiveMessageData -> " + "appid = " + msg.getAppid() + "\ntaskid = " + msg.getTaskId() + "\nmessageid = " + msg.getMessageId() + "\npkg = " + msg.getPkgName()
            + "\ncid = " + msg.getClientId() + "\npayload:" + new String(msg.getPayload()));
    Map<String, Object> payload = new HashMap<>();
    payload.put("messageId", msg.getMessageId());
    payload.put("payload", new String(msg.getPayload()));
    payload.put("payloadId", msg.getPayloadId());
    payload.put("taskId", msg.getTaskId());
    try {
        createLocalNotification(new String(msg.getPayload()));
    } catch (JSONException e) {
        Log.e(TAG, "onReceiveMessageData: " + e.getMessage());
    }
}

猜想

由于推送的进程是单独的,然后退出APP后虽然APP死了,但是推送进程还是活着的,不会走离线推送通道,所以会出现这个问题.