如何動態切換屏幕

Question

我是新的IOS開發...我來自android背景 我想在xcode中實現登錄... 當用戶單擊登錄按鈕，如果成功，對於first login它應該去OTP屏幕和用戶追求的是一個註冊的用戶...每當他/她點擊登錄按鈕就應該到主屏幕...... 所以基本上我想login按鈕切換到不同的屏幕（無導航）

例如，此功能是登錄完成時

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

您可以從登錄屏幕連接兩個塞格斯。

在故事板，連接從登錄屏幕到OTP屏幕SEGUE，並從登錄屏幕主屏幕另一SEGUE。請記住從故事板中的控制器開始拖動，而不是控制器中的任何視圖。

給每個原因請看在右側面板的標識符。我將調用第一個segue（登錄 - > OTP）「showOTP」和第二個segue（登錄 - >主屏幕）「showHome」。

if語句：

func LoginDone() { 

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

} 

這裏我用data作爲sender參數。請將其替換爲您要發送到其他視圖控制器的數據。

然後，覆蓋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. 
    } 
}