对于谷歌登录，startActivityForResult()已弃用

implementation 'com.google.android.gms:play-services-auth:20.1.0'

<meta-data
    android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />

// 创建GoogleSignInOptions对象，指定需要获取的用户信息和请求的权限
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
        .requestEmail()
        .build();

// 在Activity的onCreate方法中初始化GoogleSignInClient对象
GoogleSignInClient mGoogleSignInClient = GoogleSignIn.getClient(this, gso);

// 在登录按钮的点击事件中调用谷歌登录
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
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) {
        Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
        handleSignInResult(task);
    }
}

private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
    try {
        GoogleSignInAccount account = completedTask.getResult(ApiException.class);
        // 登录成功，可以获取用户信息并进行相关操作

    } catch (ApiException e) {
        // 登录失败，处理异常
    }
}