java - 为什么我无法导入 GoogleSignInClient 类？

Question

我正在尝试使用 google 无提示登录，但由于某种原因未定义 GoogleSignInClient 类。当我按 alt-enter 时，它只是说“创建类”而不是导入类。感谢任何帮助，谢谢!

private void signInSilently() {
    GoogleSignInClient signInClient = GoogleSignIn.getClient(this, GoogleSignInOptions.DEFAULT_GAMES_SIGN_IN);
    signInClient.silentSignIn().addOnCompleteListener(this,
            new OnCompleteListener<GoogleSignInAccount>() {
                @Override
                public void onComplete(@NonNull Task<GoogleSignInAccount> task) {
                    if (task.isSuccessful()) {
                        // The signed in account is stored in the task's result.
                        GoogleSignInAccount signedInAccount = task.getResult();
                    } else {
                        // Player will need to sign-in explicitly using via UI
                    }
                }
            });
}

@Override
protected void onResume() {
    super.onResume();
    signInSilently();
}

另外:

implementation 'com.google.firebase:firebase-core:16.0.0'
implementation 'com.google.firebase:firebase-database:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.1'
implementation 'com.google.android.gms:play-services-auth:15.0.1'
implementation 'com.google.android.gms:play-services-identity:15.0.1'

Answer 1

我已经通过更新文件解决了问题

build.gradle (Project: projectname)

在这个特定部分

来自:

classpath 'com.google.gms:google-services:3.1.1'

与:

classpath 'com.google.gms:google-services:3.3.1'