android - FCM token 何时到期？

Question

FCM token 何时到期？是6个月吗？

Answer 1

但它不会过期。如果发生以下情况之一，它会自行更新。

根据https://firebase.google.com/docs/cloud-messaging/android/client :

1. -应用删除Instance ID
2. -应用在新设备上恢复
3. -用户卸载/重新安装应用程序
4. -用户清除应用数据。

Monitor token generation

The onTokenRefreshcallback fires whenever a new token is generated, so calling getToken in its context ensures that you are accessing a current, available registration token. Make sure you have added the service to your manifest, then call getToken in the context of onTokenRefresh, and log the value as shown:

@Override
public void onTokenRefresh() {
    // Get updated InstanceID token.
    String refreshedToken = FirebaseInstanceId.getInstance().getToken();
    Log.d(TAG, "Refreshed token: " + refreshedToken);

    // If you want to send messages to this application instance or
    // manage this apps subscriptions on the server side, send the
    // Instance ID token to your app server.
    sendRegistrationToServer(refreshedToken);
}

编辑

onTokenRefresh()现在已弃用。 onNewToken()应改为使用。