Google Sign in doesn't return any result when 'Use another account' to sign in

问题

This seems to be a basic feature but after following the signing-in tutorial, it only works if I choose the account that is already registered on the device.

After choosing 'Use another account' and completing some steps to authenticate it looses the call-back result, (onActivityResult is not called).

I use GoogleSignInOptions: no exception occurs and I can't add any listener to detect exceptions.

However, GoogleApiClient works fine but there are some deprecated methods, thus I decided to switch to GoogleSignInOptions to avoid deprecation issues.
Initizlization:

googleSignInOptions = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestEmail()
                .build();

googleSignInClient = GoogleSignIn.getClient(this, googleSignInOptions);

when click:

signInButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                signIn();
            }
        });

private void signIn() {
        googleSignInClient.signOut();
        Intent signInIntent = googleSignInClient.getSignInIntent();
        startActivityForResult(signInIntent, 123);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 123 && data != null) {
            handleSignInResult(data);
        }
    }

    private void handleSignInResult(Intent data) {
        Task<GoogleSignInAccount> signInTask = GoogleSignIn.getSignedInAccountFromIntent(data);
        try {
            GoogleSignInAccount googleSignInAccount = signInTask.getResult(ApiException.class);
            if (googleSignInAccount != null) {
                updateUI(googleSignInAccount);
            }
        } catch (ApiException e) {
            e.printStackTrace();
        }
    }

Anyone can help please?

回答1:

UPDATE: This bug has now been fixed in the Oauth2 Library

---

So I ran into the same issue as well. What I have found is that this is an open issue reported back in March. So this is probably not an issue with your code.

I found another stackoverflow question about the difference between Oauth2 and googleAuthUtil, using the other library mentioned, I have found that this bug doesn't exist.

I imported this package into my gradle

implementation('com.google.api-client:google-api-client-android:1.23.0') {
    exclude group: 'org.apache.httpcomponents'
}

and authenticate off of the GoogleAccountCredential object.

    GoogleAccountCredential credential = new GoogleAccountCredential(context, scope);
    startActivityForResult(credential.newChooseAccountIntent(), resultCode);

You need GET_ACCOUNTS permission for this method.

来源：https://stackoverflow.com/questions/50114176/google-sign-in-doesnt-return-any-result-when-use-another-account-to-sign-in