我正在Unity3d中开发一款使用Firebase身份验证的Android应用程序，在我尝试使用Firebase数据库包之前，它运行良好。它进口得很好。但是当我输入代码来为我的应用程序的Start（）函数设置我的数据库时，例如FirebaseApp.DefaultInstance.SetEditorDatabaseUrl("https://YOUR-Firebase-APP.Firebaseio.com/");（在Firebase统一指南https://Firebase.google.com/docs/database/unity/start中）。几乎每次我使用身份验证或数据库功能时，或者几秒钟之后崩溃都会崩溃。
在添加数据库包之前，这是我的start（）函数：
Firebase.Auth.FirebaseAuth auth;
Firebase.Auth.FirebaseUser user;
Firebase.DependencyStatus dependencyStatus = Firebase.DependencyStatus.UnavailableOther;
void Start () {
dependencyStatus = Firebase.FirebaseApp.CheckDependencies();
if (dependencyStatus != Firebase.DependencyStatus.Available) {
Firebase.FirebaseApp.FixDependenciesAsync().ContinueWith(task => {
dependencyStatus = Firebase.FirebaseApp.CheckDependencies();
if (dependencyStatus == Firebase.DependencyStatus.Available) {
InitializeFirebase();
} else {
// This should never happen if we're only using Firebase Analytics.
// It does not rely on any external dependencies.
Debug.LogError(
"Could not resolve all Firebase dependencies: " + dependencyStatus);
}
});
} else {
InitializeFirebase();
}
}void InitializeFirebase() {
Debug.Log("Setting up Firebase Auth");
auth = Firebase.Auth.FirebaseAuth.DefaultInstance;
auth.StateChanged += AuthStateChanged;
}
// Track state changes of the auth object.
void AuthStateChanged(object sender, System.EventArgs eventArgs) {
if (auth.CurrentUser != user) {
if (user == null && auth.CurrentUser != null) {
Debug.Log("Signed in " + auth.CurrentUser.DisplayName);
} else if (user != null && auth.CurrentUser == null) {
Debug.Log("Signed out " + user.DisplayName);
}
user = auth.CurrentUser;
//Debug.Log("Signed in " + auth.CurrentUser.DisplayName);
}
}
这是我应用数据库连接后的代码（我刚刚在InitializeFirebase（）函数的初始化和几行中添加了一个变量）：
Firebase.Auth.FirebaseAuth auth;
Firebase.Auth.FirebaseUser user;
DatabaseReference mRef;
Firebase.DependencyStatus dependencyStatus = Firebase.DependencyStatus.UnavailableOther;
void Start () {
dependencyStatus = Firebase.FirebaseApp.CheckDependencies();
if (dependencyStatus != Firebase.DependencyStatus.Available) {
Firebase.FirebaseApp.FixDependenciesAsync().ContinueWith(task => {
dependencyStatus = Firebase.FirebaseApp.CheckDependencies();
if (dependencyStatus == Firebase.DependencyStatus.Available) {
InitializeFirebase();
} else {
// This should never happen if we're only using Firebase Analytics.
// It does not rely on any external dependencies.
Debug.LogError(
"Could not resolve all Firebase dependencies: " + dependencyStatus);
}
});
} else {
InitializeFirebase();
}
void InitializeFirebase() {
Debug.Log("Setting up Firebase Auth");
auth = Firebase.Auth.FirebaseAuth.DefaultInstance;
auth.StateChanged += AuthStateChanged;
FirebaseApp app = FirebaseApp.DefaultInstance;
app.SetEditorDatabaseUrl("https://testapp-509c4.firebaseio.com/");
mRef = FirebaseDatabase.DefaultInstance.RootReference;
}
// Track state changes of the auth object.
void AuthStateChanged(object sender, System.EventArgs eventArgs) {
if (auth.CurrentUser != user) {
if (user == null && auth.CurrentUser != null) {
Debug.Log("Signed in " + auth.CurrentUser.DisplayName);
} else if (user != null && auth.CurrentUser == null) {
Debug.Log("Signed out " + user.DisplayName);
}
user = auth.CurrentUser;
//Debug.Log("Signed in " + auth.CurrentUser.DisplayName);
}
}
我不确定问题是什么。也许两个实例都尝试访问相同的权限或实例。每次我尝试auth.CreateUserWithEmailAndPasswordAsync(email, password)或italicauth.SignInWithEmailAndPasswordAsync(username_text,password_text)等函数时，我都会在日志中收到此错误
在我尝试连接到firebase数据库之前，它工作得很好
每次我执行其中一项功能时，Android logcat都会显示此信息（即使它崩溃与否）：
12-01 00:55:51.214 4615-4639/? I/Unity: NullReferenceException: Object reference not set to an instance of an object
at Intro.Login () [0x00000] in <filename unknown>:0
at UnityEngine.Events.InvokableCall.Invoke (System.Object[] args) [0x00000] in <filename unknown>:0
at UnityEngine.Events.InvokableCallList.Invoke (System.Object[] parameters) [0x00000] in <filename unknown>:0
at UnityEngine.Events.UnityEventBase.Invoke (System.Object[] parameters) [0x00000] in <filename unknown>:0
at UnityEngine.Events.UnityEvent.Invoke () [0x00000] in <filename unknown>:0
at UnityEngine.UI.Button.Press () [0x00000] in <filename unknown>:0
at UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) [0x00000] in <filename unknown>:0
at UnityEngine.EventSystems.ExecuteEvents.Execute (IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) [0x00000] in <filename unknown>:0
at UnityEngine.EventSystems.ExecuteEvents.Execute[IPointerClickHandler] (UnityEngine.GameObject target, UnityEngi
12-01 00:55:51.224 21998-22429/? E/AsyncOperation: serviceID=16, operation=ValidateAuthServiceOperation
java.lang.NullPointerException: onPostInitComplete can be called only once per call to getRemoteService
at iri.a(:com.google.android.gms:74)
at ioj.a(:com.google.android.gms:987)
at ipf.a(:com.google.android.gms:66)
at ixg.a(:com.google.android.gms:284)
at eks.a(:com.google.android.gms:125)
at eks.a(:com.google.android.gms:113)
at ixn.run(:com.google.android.gms:113)
at jaq.run(:com.google.android.gms:450)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at jew.run(:com.google.android.gms:17)
at java.lang.Thread.run(Thread.java:841)
请帮忙，如果您需要我项目中的更多代码，请告诉我。 谢谢
答案 0 :(得分：0)
我认为FirebaseApp.DefaultInstance.SetEditorDatabaseUrl注定要使用统一编辑器，所以你不应该包含Android。
尝试像这样包装：
#if UNITY_EDITOR
FirebaseApp.DefaultInstance.SetEditorDatabaseUrl
#endif
答案 1 :(得分：0)
缺少Firebase统一编辑器参考。尝试添加：
using Firebase.Unity.Editor;
答案 2 :(得分：0)
Firebase Unity 最新版本已弃用 SetEditorDatabaseUrl
string BaseURL = "https://yourapp-e756f.firebaseio.com/";
FirebaseApp.DefaultInstance.SetEditorDatabaseUrl(BaseURL ); //Deprecated
//please comment the code.