Firebase令牌身份验证错误

我正在使用firebase存储上传文件，但是当我上传时，我得到这个错误

E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.android.gms.internal.zzand: Please sign in before trying to get a token.

我谷歌了一下，但找不到答案!

我想你在上传文件之前没有签名。在启动器活动的onCreate()中，尝试以下代码

FirebaseAuth mAuth = FirebaseAuth.getInstance();

然后在onStart()中，

FirebaseUser user = mAuth.getCurrentUser();
if (user != null) {
  // do your stuff
} else {
  signInAnonymously();
}

signInAnonymously ()

private void signInAnonymously() {
    mAuth.signInAnonymously().addOnSuccessListener(this, new  OnSuccessListener<AuthResult>() {
            @Override
            public void onSuccess(AuthResult authResult) {
                // do your stuff
            }
        })
        .addOnFailureListener(this, new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception exception) {
                Log.e(TAG, "signInAnonymously:FAILURE", exception);
            }
        });
}

这可能会解决你的问题

注意:首先在您的firebase项目中启用匿名登录。身份验证→登录方法

我也面临同样的问题，这是因为默认情况下firebase只允许从已经过身份验证的用户上传文件。

在storage util异常上面可能有类似这样的日志:

E/StorageUtil: error getting token java.util.concurrent.ExecutionException: com.google.android.gms.internal.zzajb: Please sign in before trying to get a token.

我们有自己的身份验证过程而不使用firebase，所以我们决定更改firebase控制台的存储规则。

service firebase.storage {
  match /b/{bucket}/o {
    match /{allPaths=**} {
    allow read, write;
    }
  }
}

注意:更改规则将允许任何用户上传文件到您的firebase云服务器

也许你只是无法"get started" to firebase。我这么说是因为我创建了一个项目，通过Android Studio IDE连接到firebase存储，但我必须在控制台上手动"开始"。

以下步骤对我有效:

生成正确的google服务。

build.gradle (app)

 dependencies {
 compile 'com.google.firebase:firebase-storage:10.2.0'
 compile 'com.google.firebase:firebase-auth:10.2.0'
 compile 'com.google.firebase:firebase-core:10.2.0'
 compile 'com.google.firebase:firebase-database:10.2.0'
 compile 'com.firebase:firebase-client-android:2.4.0'
 }

确保在构建中添加了以下依赖项。Gradle(项目根目录)

dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'
classpath 'com.google.gms:google-services:3.0.0'
}

在您的活动中下载文件时添加以下代码:

// Declaration reference
private StorageReference storageRef;

private void downloadImageFromFireBase()
{
showProgressDialog("Downloading image..");
storageRef = storage.getReferenceFromUrl("gs://XXX.appspot.com/").child("av"+ datePassed +".jpg");
showImageFromFireBaseDataBase();
}
private void showImageFromFireBaseDataBase()
{
    try {
        final File localFile = File.createTempFile("images", "jpg");
        final Bitmap[] bitmap = new Bitmap[1];
            storageRef.getFile(localFile).addOnSuccessListener(new OnSuccessListener<FileDownloadTask.TaskSnapshot>() {
                @Override
                public void onSuccess(FileDownloadTask.TaskSnapshot taskSnapshot) {
                    Log.e("Test", "success!");
                    bitmap[0] = BitmapFactory.decodeFile(localFile.getAbsolutePath());
                    raysImage.setImageBitmap(bitmap[0]);
                }
            }).addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception exception) {
                    Log.e("Test", "fail :( " + exception.getMessage());
                }
            });
        }catch(IOException e){
        Log.e("ImageView",e.toString());
        }
    }

您必须先登录FirebaseAuth。

你可以匿名登录，

但是如果你想登录用户的Google id，试试这样。

为了方便使用，我创建了一个管理器类。

创建(你的)GoogleUserManager类

object YourGoogleUserManager {
    private lateinit var gso: GoogleSignInOptions
    private lateinit var firebaseAuth: FirebaseAuth
    fun init(context: Context) {
        firebaseAuth = FirebaseAuth.getInstance()
        gso = GoogleSignInOptions
            .Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(context.getString(R.string.default_web_client_id))
            .build()
    }
    fun startGoogleSignInForResult(
        fragment: Fragment,
        onSuccess: (AuthResult) -> Unit,
        onFail: (Exception) -> Unit
    ): ActivityResultLauncher<Intent> {
        return fragment.registerForActivityResult(
            ActivityResultContracts.StartActivityForResult()
        ) {
            val task = GoogleSignIn.getSignedInAccountFromIntent(it.data)
            handleGoogleSignInResult(task, onSuccess, onFail)
        }
    }
    fun signIn(
        activityResultLauncher: ActivityResultLauncher<Intent>,
        activity: Activity
    ) {
        val googleSignInClient = GoogleSignIn.getClient(activity, gso)
        activityResultLauncher.launch(googleSignInClient.signInIntent)
    }
    private fun handleGoogleSignInResult(
        task: Task<GoogleSignInAccount>,
        onSuccess: (AuthResult) -> Unit,
        onFail: (Exception) -> Unit
    ) {
        try {
            val account = task.getResult(ApiException::class.java)
            val credential = GoogleAuthProvider.getCredential(account?.idToken, null)
            firebaseAuth.signInWithCredential(credential)
                .addOnSuccessListener {
                    CatHolicLogger.log("success to firebase google sign in")
                    onSuccess(it)
                }
                .addOnFailureListener {
                    CatHolicLogger.log("fail to firebase google sign in")
                    onFail(it)
                }
        } catch (e: ApiException) {
            CatHolicLogger.log("fail to firebase google sign in")
            onFail(e)
        }
    }
    fun signOut() {
        firebaseAuth.signOut()
    }
}

初始化应用程序中的管理器

class YourApplication : Application() {
    ...
    override fun onCreate() {
        super.onCreate()
        initGoogleUserManager()
    }
    ...
    private fun initGoogleUserManager() {
        YourGoogleUserManager.init(this)
    }
}

在你的Fragment(or Activity)中使用manager

class YourFragment : Fragment() {
    ...
    ...
    private val startGoogleSignInForResult =
        YourGoogleUserManager.startGoogleSignInForResult(this, onSuccess = {
            // your job after success to sign in
        }, onFail = {
            // your job after fail to sign in
        })
    ...
    ...
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        binding.signInButton.setOnClickListener {
            YourGoogleUserManager.signIn(startGoogleSignInForResult, requireActivity())
        }
    }
}

它可以是像互联网连接一样简单的东西，如果你所有的代码都是正确的，并且你已经在firebase上验证了所有用户

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