Google plus login getIdToken returns null

Question

我试图在我的应用程序中集成google plus登录。但是当我调用getServerAuthCode()和getIdToken()时，它总是返回null。我不知道到底是什么问题。

     private void handleSignInResult (GoogleSignInResult result)
     {
        Log.d(TAG, "handleSignInResult:" + result.isSuccess());
        if (result.isSuccess()) {
            GoogleSignInAccount acct = result.getSignInAccount();
            Toast.makeText(getApplicationContext(), acct.getDisplayName() + "-" + acct.getEmail() + "-" + acct.getServerAuthCode(), Toast.LENGTH_SHORT).show();
            Log.d(TAG, "Server Token google" + acct.getServerAuthCode() + "-ID token" + acct.getIdToken());
            create_account_method(acct.getEmail(), acct.getDisplayName(), acct.getServerAuthCode());
        } else {
        }
    }

Answer 1

可能您已经解决了，但供将来参考。我也遇到过同样的问题，而解决方法其实很简单。

在这个链接中阅读getIdToken文档后，我发现当我构建GoogleSignInOptions对象时，它缺少了requesttidtoken (serverClientId)和. requestserverauthcode (serverClientId, false)调用。

代码如下:

String serverClientId = getResources().getString(R.string.google_server_client_id);
GoogleSignInOptions gso = new GoogleSignInOptions
                .Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestEmail()
                .requestIdToken(serverClientId)
                .requestServerAuthCode(serverClientId, false)
                .build();

Answer 2

初始化是否正确?试试这个

onResume() {
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestEmail()
            .requestProfile()
            .requestScopes(new Scope(Scopes.PLUS_ME))
            .requestScopes(new Scope(Scopes.PLUS_LOGIN))
            .build();
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .enableAutoManage(this, this)
            .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
            .build();
}

点击登录按钮后

public void gmailLogin(GoogleApiClient mGoogleApiClient) {
    Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
    startActivityForResult(signInIntent, RC_SIGN_IN);
}
 @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == RC_SIGN_IN) {
        GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
    }
}