FirebaseUI iOS删除取消按钮

Question

我是iOS开发的新手。我想用Firebase建立授权。我正在使用FirebaseUI-iOS。我想隐藏初始屏幕上的取消按钮。你有任何想法怎么做吗？

我以编程方式创建Firebase authViewController：

import UIKit
import Firebase
import FirebaseAuthUI
import FirebaseGoogleAuthUI

class AuthViewController: UIViewController {

fileprivate var _authHandle: FIRAuthStateDidChangeListenerHandle!
var user: FIRUser?

override func viewDidLoad() {
    super.viewDidLoad()
    configureAuth()
}

func configureAuth() {
    let provider: [FUIAuthProvider] = [FUIGoogleAuth()]
    FUIAuth.defaultAuthUI()?.providers = provider
    FUIAuth.defaultAuthUI()?.isSignInWithEmailHidden = true

    // listen for changes in the authorization state
    _authHandle = FIRAuth.auth()?.addStateDidChangeListener { (auth: FIRAuth, user: FIRUser?) in
        // check if there is a current user
        if let activeUser = user {
            // check if the current app user is the current FIRUser
            if self.user != activeUser {
                self.user = activeUser
                let name = user!.email!.components(separatedBy: "@")[0]
                print(name)
            }
        } else {
            // user must sign in
            self.loginSession()
        }
    }
}

func loginSession() {
    let authViewController = FUIAuth.defaultAuthUI()!.authViewController()
    present(authViewController, animated: true, completion: nil)
}

deinit {
    FIRAuth.auth()?.removeStateDidChangeListener(_authHandle)
}
}

Answer 1

扩展VC并将其添加到viewWillAppear

中

extension FUIAuthBaseViewController{
  open override func viewWillAppear(_ animated: Bool) {
    self.navigationItem.leftBarButtonItem = nil
  }
}

Answer 2

为此，您可以在leftBarButtonItem或nil中将viewDidLoad设置为viewWillAppear。

self.navigationItem.leftBarButtonItem = nil

Answer 3

您应该设置

FUIAuth.defaultAuthUI()?.shouldHideCancelButton = true

Answer 4

在目标C中，只需扩展FUIAuthPickerView Controller。

在此扩展选择器视图的ViewDidLoad中，添加以下两行：

self.navigationController.navigationItem.hidesBackButton = NO;
[[self navigationItem] setLeftBarButtonItem:nil];

请注意，在实例化Auth UI的文件中，您将需要此方法：

- (FUIAuthPickerViewController *)authPickerViewControllerForAuthUI:(FUIAuth *)authUI {
return [[FUICustomAuthPickerViewController alloc] initWithAuthUI:authUI];
}