java.lang.IllegalArgumentException：必须指定idToken或accessToken

我正在尝试使用firebase实现Google登录身份验证 . 我正在关注this教程 .

错误日志：

java.lang.RuntimeException：将结果ResultInfo {who = null，request = 1002，result = -1，data = Intent {（has extras）}}传递给activity {com.clabs.codefosterapp / com.clabs.codefosterapp . SplashActivity}：java.lang.IllegalArgumentException：必须指定idToken或accessToken . 在android.app.ActivityThread.deliverResults（ActivityThread.java:3389）的android.app.ActivityThread.handleSendResult（ActivityThread.java:3432）android.app.ActivityThread.access $ 1300（ActivityThread.java:135）android.app .ActivityThread $ H.handleMessage（ActivityThread.java:1244）在android.app.Loper.loop（Looper.java：136）的android.app.Handler.dispatchMessage（Handler.java:102）android.app.ActivityThread . main（ActivityThread.java:5045）at java.lang.reflect.Method.invokeNative（Native Method）at java.lang.reflect.Method.invoke（Method.java:515）at com.android.internal.os.ZygoteInit $位于dalvik.system.NativeStart.main（本地方法）的com.android.internal.os.ZygoteInit.main（ZygoteInit.java:595）中的MethodAndArgsCaller.run（ZygoteInit.java:779）引起：java.lang.IllegalArgumentException：必须指定idToken或accessToken . 来自com.google.firebase.auth.GoogleAuthCredential . （未知来源）位于com.clabs.codefosterapp.SplashActivity.firebaseAuthWithGoogle（SplashActivity.java:102）的com.google.firebase.auth.GoogleAuthProvider.getCredential（未知来源）位于android.app的Android.app.ActivityThread.deliverResults（ActivityThread.java:3385）的android.app.Activity.dispatchActivityResult（Activity.java:5423）上的.clabs.codefosterapp.SplashActivity.onActivityResult（SplashActivity.java:91） . ActivityThread.handleSendResult（ActivityThread.java:3432）在Android.app.Handler的android.app.ActivityThread.access $ 1300（ActivityThread.java:135）android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1244） . 在android.app.Looper.loop（Looper.java：136）上的dispatchMessage（Handler.java:102）位于android.app.ActivityThread.main（ActivityThread.java:5045）的java.lang.reflect.Method.invokeNative（Native）方法）在java.lang.reflect.Method.invoke（Method.java:515）at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（Zygo） teInit.java:779）at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:595）at dalvik.system.NativeStart.main（Native Method）

崩溃在下面的行

AuthCredential credential = GoogleAuthProvider.getCredential(account.getIdToken(), null);

我的代码：

private void googleSignIn() {
        Intent intent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
        startActivityForResult(intent, SIGN_IN);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == SIGN_IN) {
            GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
            if (result.isSuccess()) {
                GoogleSignInAccount account = result.getSignInAccount();
                firebaseAuthWithGoogle(account);
            } else {

                Toast.makeText(SplashActivity.this, "Oops! Something Went Wrong", Toast.LENGTH_SHORT).show();
            }

        }
    }
private void firebaseAuthWithGoogle(GoogleSignInAccount account) {

        AuthCredential credential = GoogleAuthProvider.getCredential(account.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (!task.isSuccessful()) {
                            Toast.makeText(SplashActivity.this, "Authentication Failed", Toast.LENGTH_SHORT).show();
                        }
                    }
                });
    }