我在我的 flutter 应用程序中使用 firebase 消息传递，但是当我运行我的项目时，它显示 Stringtoken=FirebaseInstanceId.getInstance().getToken(senderId, "*");

Question

I'm using firebase messaging in my flutter app but when I run my project it show String token = FirebaseInstanceId.getInstance().getToken(senderId, "*");

when I run my application it shows this error in the console:

C:\Users\cerbi\AppData\Local\Pub\Cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:166: error: cannot find symbol String token = FirebaseInstanceId.getInstance().getToken(senderId, "*"); ^ symbol: variable FirebaseInstanceId location: class FlutterFirebaseMessagingPlugin Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details.

What went wrong: Execution failed for task ':firebase_messaging:compileDebugJavaWithJavac'.

and when I navigate to the specific file stated in the error message here is the code in there

        private Task<Map<String, Object>> getToken(Map<String, Object> arguments) {
            return Tasks.call(
                cachedThreadPool,
                () -> {
                  String senderId =
                      arguments.get("senderId") != null
                          ? (String) arguments.get("senderId")
                          : Metadata.getDefaultSenderId(FirebaseApp.getInstance());
                  String token = FirebaseInstanceId.getInstance().getToken(senderId, "*");
                  return new HashMap<String, Object>() {
                    {
                      put("token", token);
                    }
                  };
                });
          }

What can I do to resolve this problem, it seems that the existing code is not working anymore

Answer 1

You should use

FirebaseMessaging.getInstance().token

to get token, since

FirebaseInstanceId.getInstance().getToken

is deprecated.

Answer 2

To retrieve the current registration token for an app instance, you need to call FirebaseMessaging.instance.getToken(); as stated here in their official guide.