如果 selectedSegmentIndex 不同，则不同 ViewController

Question

我的密码是

@IBAction func pressedButton(_ sender: Any) {  
        self.resignFirstResponder()
        if mySegment.selectedSegmentIndex == 0 {

这里我需要如果我在 ViewControllerA 上选择了 Segment #0（然后按下我的按钮）然后转到 ViewControllerB，如果 Segment # 1 然后 ViewControllerC，如果段 #2 然后 ViewControllerD.
可能吗？

Answer 1

是的，如果你使用 UINavigationController 或 present

，你可以在 IB 中为他们设置 id 并推送

if mySegment.selectedSegmentIndex == 0 {

     let so = self.storyboard?.instantiateViewController(withIdentifier: "AID")

     self.navigationController?.pushViewController(so!, animated: true)
}
else  if mySegment.selectedSegmentIndex == 1 {

    let so = self.storyboard?.instantiateViewController(withIdentifier: "BID")

    self.navigationController?.pushViewController(so!, animated: true)
}

Answer 2

Swift:

    if(sender.selectedSegmentIndex==0)
     {

       let lvc = self.storyboard?.instantiateViewController(withIdentifier: "cellVC") as! YourViewController1
       self.navigationController?.pushViewController(lvc!, animated: true)
     }

   else 
     {
        let vc = self.storyboard?.instantiateViewController(withIdentifier: "cellVC1") as! YourViewController2
        self.navigationController?.pushViewController(vc!, animated: true)
     }

对象：

 if(sender.selectedSegmentIndex==0)
 {
  viewcontroller1 *yourView1=[[viewcontroller alloc]init];
  [self.navigationController pushViewController:yourView1 animated:YES];
 }
 else 
 {
  viewcontroller2 *yourView2=[[viewcontroller2 alloc]init];
  [self.navigationController pushViewController:yourView2 animated:YES];
 }

Answer 3

您应该为通用解决方案创建枚举，而不是使用 if else 条件。

像这样创建 ViewController 的枚举，

enum CurrentViewController : Int {
    case ViewControllerB
    case ViewControllerC
    case ViewControllerD

    var description : String {
        switch self {
            case .ViewControllerB: return "ViewControllerB"
            case .ViewControllerC: return "ViewControllerC"
            case .ViewControllerD: return "ViewControllerD"
        }
    }
}

现在转到合适的控制器，你可以这样做，

let currentViewController = CurrentViewController(rawValue: mySegment.selectedSegmentIndex)
let viewController = self.storyboard?.instantiateViewController(withIdentifier: (currentViewController?.description)!)
self.navigationController?.pushViewController(viewController!, animated: true)

以上是适用于所有人的通用解决方案。如有任何疑问，请告诉我。

Answer 4

首先为每个 viewController 连接一个 segue。 control-从 ViewControllerA 顶部的 viewController 图标拖动到另一个 ViewController 和 select segue 类型。
单击 viewController 之间的 segue 箭头，并在 Attributes Inspector[=45] 中设置其 identifier =]右边.

为每个 ViewControllerB、ViewControllerC 和 ViewControllerD 重复第 1 步和第 2 步，为其提供唯一的 id，例如 "segueToB"、"segueToC" 和 "segueToD".

在您的按钮代码中，执行以下操作：

let idx = mySegment.selectedSegmentIndex let segueID = ["segueToB", "segueToC", "segueToD"][idx] self.performSegue(withIdentifier: segueID, sender: self)

连接两个segue的Demo：

Answer 5

可以 ,只需设置 StoryBoard

中 ViewController 的 id

if mySegment.selectedSegmentIndex == 0 {

 let vcB = self.storyboard?.instantiateViewController(withIdentifier: "VCB")
 self.navigationController?.pushViewController(vcB, animated: true)

}else  if mySegment.selectedSegmentIndex == 1 {

let vcC = self.storyboard?.instantiateViewController(withIdentifier: "VCB")
self.navigationController?.pushViewController(vcC, animated: true)

}else  if mySegment.selectedSegmentIndex == 2 {

let vcD = self.storyboard?.instantiateViewController(withIdentifier: "VCD")
self.navigationController?.pushViewController(vcD, animated: true)

}

如果 selectedSegmentIndex 不同，则不同 ViewController

Different ViewController if different selectedSegmentIndex

uisegmentedcontrol

ios

swift