Question

我是IOS开发的新手......我来自android背景我想在xcode中实现登录... 当用户点击登录按钮并且如果成功，对于first login它应该进入OTP屏幕并且在用户是注册用户之后......每当他/她点击登录按钮时它应该回家屏幕... 所以基本上我希望login按钮切换到不同的屏幕（没有导航）

例如，此func是登录完成时的

func LoginDone()
{
    if (registeredUser()){
     //switch to OTP screen and also send The username to that .swift file
    }

    else{
     //switch to homescreen and send some data to that .swift file
    }     
}

Answer 1

您可以从登录屏幕连接两个segue。

在故事板中，将登录界面中的segue连接到OTP屏幕，将另一个segue从登录屏幕连接到主屏幕。请记住从故事板中的控制器开始拖动，不控制器中的任何视图。

在右侧面板中为每个segue指定一个标识符。我将调用第一个segue（登录 - >＆gt; OTP）＆＃34; showOTP＆＃34;和第二个segue（登录 - ＆gt;主屏幕）＆＃34; showHome＆＃34;。

在if语句中：

func LoginDone() {

    if (registeredUser()){
         performSegue(withIdentifier: "showOTP", sender: data)
    } else {
         performSegue(withIdentifier: "showHome", sender: data)
    }

}

这里我使用data作为sender参数。请将其替换为您要发送给其他视图控制器的数据。

然后，覆盖prepareForSegue：

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "showOTP" {
        let vc = segue.destination as! OTPController // Here replace OTPController with the class name of the OTP screen
        vc.username = sender as! String // username is a property in OTPController used to accept the value passed to it. If you don't have this, declare it.
    } else if segue.identifier == "showHome" {
        let vc = segue.destination as! HomeController // Here replace HomeController with the class name of the home screen
        vc.data = sender as! SomeType // data is a property in HomeController used to accept the value passed to it. If you don't have this, declare it.
        // replace SomeType with the type of data you are passing.
    }
}

如何动态切换屏幕

1 个答案: