Vuzix刀片上的Firebase(Unity SDK):OntokenReceived从未触发

Question

我试图让firebase在Vuzix刀片上的Unity项目中运行，以便在那里接收推送通知。但是，OnTokenReceived回调从未被调用，因此我没有任何代币来解决推送通知。

Vuzix Blade在Android 5上运行，我已经安装了Google Play服务和Google Play商店，因为它们默认不安装，而是Firebase需要的。Firebase似乎正常启动，或者至少我在LogCat上没有任何错误消息，并且CheckAndFixDependenciesAsync()用Firebase.DependencyStatus.Available正确完成。

相同的APK在我的Android手机(OnePlus 5(上运行良好，在该手机上我获得了一个令牌，并且在应用程序运行和后台可以接收通知。

我正在使用Unity 2018.3和Firebase SDK 5.7.0(尽管结果为5.6.0，但结果相同(。

private void Awake()
{
    Firebase.FirebaseApp.CheckAndFixDependenciesAsync().ContinueWith(
            task =>
            {
                var dependencyStatus = task.Result;
                if ( dependencyStatus == Firebase.DependencyStatus.Available ) // this is always true
                {
                    // Create and hold a reference to your FirebaseApp,
                    // where app is a Firebase.FirebaseApp property of your application class.
                    m_kFirebaseApp = Firebase.FirebaseApp.DefaultInstance;
                    // Set a flag here to indicate whether Firebase is ready to use by your app.
                    Firebase.Messaging.FirebaseMessaging.TokenRegistrationOnInitEnabled = true;
                    Firebase.Messaging.FirebaseMessaging.TokenReceived += OnTokenReceived;
                    Firebase.Messaging.FirebaseMessaging.MessageReceived += OnMessageReceived;
                } 
                else
                {
                    Debug.LogError(string.Format("Could not resolve all Firebase dependencies: {0}", dependencyStatus ) );
                    // Firebase Unity SDK is not safe to use here.
                }
            } );
}
// This never gets called!
public void OnTokenReceived(object sender, Firebase.Messaging.TokenReceivedEventArgs token )
{
    m_kToken = token.Token;
    Debug.Log( "Received Registration Token: " + token.Token );
}

Answer 1

刀片不是不符合CTS的设备吗？由于Firebase SDK需要设备以启用Google Mobile Services(GMS(以进行功能，因此这不允许Firebase进行操作。