Google Firebase 在 Android 应用中注销并忘记用户 [英] Google Firebase sign out and forget user in Android app

问题描述

当我调用 mFirebaseAuth.signOut() 或 mFirebaseUser.delete() 时，我的 FirebaseAuth.AuthStateListener() 工作正常并返回 null 作为 onAuthStateChanged 中的 FirebaseUser 实例，我刷新 UI 并显示使用 Google 登录"按钮.

When I call mFirebaseAuth.signOut() or mFirebaseUser.delete() my FirebaseAuth.AuthStateListener() works correctly and returns null as FirebaseUser instance in onAuthStateChanged, I refresh UI and show "Sign in with Google" button.

但是当我想再次登录时，我没有看到与用户的对话框(我的设备上有 2 个用户，附上图片).该应用程序仅在第一次登录时显示此对话框，之后它会使用相同的用户.如果我在设置屏幕上清除应用程序的数据，我将能够再次看到此对话框.

But when I want to log in again, I don't see the dialog with users (I have 2 users on my device, attached the image). The app shows this dialog only in first sign in, after that it uses the same user. If I clear app's data on the settings screen I will be able to see this dialog again.

我的问题是如何在每次注销后显示此对话框.

My question is how to show this dialog after every sign out.

我在按下登录"按钮时运行此代码:

I run this code when press Sign In button:

// in onCreate()
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();
mGoogleApiClient = new GoogleApiClient.Builder(this)
                .enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */)
                .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
                .build();

// in OnClickListener
Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
            startActivityForResult(signInIntent, FirebaseActivity.REQUEST_SIGN_IN);

在 onActivityResult() 中，我得到了一个 GoogleSignInResult 的实例，所以我需要的一切都在我调用 startActivityForResult() 之后发生.

In onActivityResult(), I get an instance of GoogleSignInResult so everything I need happens after I call startActivityForResult().

推荐答案

在 Firebase Auth Quickstart 示例代码，Google 提供商的注销包括这些步骤.您在退出时是否调用了 GoogleSignInClient.signOut()?

In the Firebase Auth Quickstart sample code, the sign-out for Google provider includes these steps. Are you calling GoogleSignInClient.signOut() when you sign-out?

private void signOut() {
    // Firebase sign out
    mAuth.signOut();

    // Google sign out
    mGoogleSignInClient.signOut().addOnCompleteListener(this,
            new OnCompleteListener<Void>() {
                @Override
                public void onComplete(@NonNull Task<Void> task) {
                    updateUI(null);
                }
            });
}

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