Question

我在btnHome中有两个按钮（btnProfile和HomeView）。成功登录后，会显示相同的HomeView，但应隐藏btnProfile。

Answer 1

您可以将成功登录操作的标记保存到NSUserDefaults，并在viewWillAppear方法中检查。您UIViewController的示例：

class LoginViewController: UIViewController {

    let btnProfile = UIButton()

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        let hasLoginAction = UserDefaults.standard.bool(forKey: "success_login")
        btnProfile.isHidden = hasLoginAction
    }

    func login() { 
        //just example, your logic logic here
        UserDefaults.standard.set(true, forKey: "success_login")
    }
}

Objective-C版本：

@interface ViewController ()

@property (nonatomic) IBOutlet UIButton *btnProfile;

@end

@implementation ViewController

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    BOOL hasLogin = [[NSUserDefaults standardUserDefaults] boolForKey:@"success_login"];
    self.btnProfile.hidden = hasLogin;
}

- (void)login {
    //just example, your logic logic here
    [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"success_login"];
}


@end

Answer 2

NSUserDefaults

当您在此时登录成功时，设置[[NSUserDefaults standardUserDefaults] setValue:@"YES" forKey:@"LoginSuccess"];值。

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成功登录后隐藏HomeView中的按钮

2 个答案: