每次生成新的Firebase令牌 [英] Firebase token is generated every time new

问题描述

我们在应用程序中使用Firebase Cloud Messaging来显示推送通知.根据 FirebaseInstanceId 文档，实例ID为除以下情况外稳定:

We are using Firebase Cloud Messaging in our app to displaying push notifications. According to FirebaseInstanceId doc, Instance ID is stable except when:

• 应用程序删除实例ID
• 应用已在新设备上还原
• 用户卸载/重新安装应用程序
• 用户清除应用数据

但是，每次我们启动应用程序(以前已停止，未恢复)时，都会通过 FirebaseInstanceIdService onTokenRefreshed()回调返回不同的令牌.

However every time we launch the app (previously stopped, not resumed), a different Token is returned through the FirebaseInstanceIdService onTokenRefreshed() callback.

我想知道这是服务的正常行为还是代码中存在错误.

I was wondering if this is the normal behaviour of the service or there is a bug in the code.

root build gradle 文件中的依赖项:

classpath 'com.google.gms:google-services:3.0.0'

应用构建gradle 文件中的依赖项:

"com.google.firebase:firebase-messaging:9.2.1"
"com.google.android.gms:play-services-base:9.2.1"

// defined at the bottom of the same file: plugin for firebase
apply plugin: 'com.google.gms.google-services'

FirebaseInstanceIdService :

@Override
public void onTokenRefresh() {
  // Get the saved token from the shared preferences
  final String oldToken = PrefsHelper.getStringValue(PREF_DEVICE_TOKEN);
       
  Log.d(TAG, "Old token: " + oldToken);
        
  // Get updated InstanceID token.
  final String refreshedToken = FirebaseInstanceId.getInstance().getToken();

  Log.d(TAG, "Refreshed token: " + refreshedToken);

  if (TextUtils.isEmpty(oldToken)) {
    handleNewToken(refreshedToken);
  } else {
    handleTokenUpdate(oldToken, refreshedToken);
  }
}

推荐答案

我们正在使用 Firebase项目中也有Cloud Messaging .

我们在android应用中使用firebase:

We use firebase in android app with:

compile 'com.google.firebase:firebase-core:9.0.2'

每当我们重新启动应用程序时，我们收到的令牌都会保留.

The token we receipt persist whenever we relaunch the app.

最好确保每次启动应用程序时，令牌是否在您的 FirebaseInstanceService 中刷新:

It's better to make sure if each time you launch the app, token get refreshed in your FirebaseInstanceService:

public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {

  private static final String TAG = "MyFirebaseIIDService";

  @Override public void onTokenRefresh() {
    ...

    // Get updated InstanceID token.
    String refreshedToken = FirebaseInstanceId.getInstance().getToken();
    // check here.
    Log.d(TAG, "Refreshed token: " + refreshedToken);

    ...
  }
}

然后确保在服务器中正确设置了 Firebase服务器 .

Then make sure in your server you have correctly set the Firebase Server.

如果每次启动应用程序时都获得一个不同的令牌，则可能是一个错误.但请确保您已使用最新的Firebase库测试了您的android项目

It could be a bug if you getting a different token every time you launching your app. But make sure you have tested your android project with the newest Firebase Library.

这个问题可能与您的问题有关:
Firebase Android身份验证失败:expired_token(Auth令牌已过期)

This questions could be related to your problem:
Firebase Android Authentication failed: expired_token (Auth token is expired)

这篇关于每次生成新的Firebase令牌的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！