Question

这两个按钮显示相同的ViewController。

ViewController1.swift

@objc func btnEdit()
{
    print("Edit")
    let editDeptt = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
    self.navigationController?.pushViewController(editDeptt, animated: true)
}

@IBAction func btnNewDeptt(_ sender: Any)
{
    let addDepttVC = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC

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

ViewController2.swift

override func viewDidLoad() {
    super.viewDidLoad()

      //How to identify i come from which button
}

Answer 1

在名为AddApartmentVC的{{1}}中添加一个属性，并在推送视图控制器之前进行设置。

首先创建一个枚举：

action

然后在enum Action { case edit, newDept, unknown }：

中定义此属性

AddApartmentVC

然后在你的按钮＆＃39;操作，将属性设置为所需的值：

var action = Action.unknown

或

editDeptt.action = .edit

最后，在addDepttVC.action = .newDept中，检查值：

viewDidLoad()

Answer 2

在identify中添加一个实例变量名称AddDepartmentVC，然后从当前的VC中设置相同的值，就像这样

let editDeptt = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
editDeptt.identify = "button1"

然后你可以推送它并检查AddDepartmentVC

中的变量

Answer 3

在ViewController2。swift中，声明一个像这样的变量

class ViewController2: UIViewController{
   let var originTag: Int = 0
}

override func viewDidLoad() {
    super.viewDidLoad()
    if originTag == 0
    {
        // come from button 1 - btnEdit
    }
    else
    {
        // come from button 2 - btnNewDeptt
    }
}

在ViewController 1中，像这样设置originTag。

@objc func btnEdit()
{
    print("Edit")
    let editDeptt = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
    editDeptt.originTag = 0
    self.navigationController?.pushViewController(editDeptt, animated: true)
}

@IBAction func btnNewDeptt(_ sender: Any)
{
    let addDepttVC = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
    addDepttVC.originTag = 1
    self.navigationController?.pushViewController(addDepttVC, animated: true)
}

Answer 4

只需为按钮指定标签 -

Button1.tag=1
Button2.tag=2

然后检查你的按钮 -

func onClickButton(sender: UIButton){
switch(sender.tag){
    case 101 :
        print("I am from button 1")
    default :
        print("I am from button 2")
    }
}

Answer 5

使用它完全适合你。

在Viewcontroller1.Swift

中获取上面类的一个公共变量

public var btnComingFrom = "first"

@objc func btnEdit()
{

   btnComingFrom = "first"

    print("Edit")
    let editDeptt = 
 self.storyboard?.instantiateViewController(withIdentifier: "Add Department") 
as! AddDepartmentVC
    self.navigationController?.pushViewController(editDeptt, animated: true)
}

@IBAction func btnNewDeptt(_ sender: Any)
{
   btnComingFrom = "second"

    let addDepttVC = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC

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

ViewController2.swift

override func viewDidLoad()
{
    super.viewDidLoad()

      if btnComingFrom == "first"
      {
       print("you are coming from first button")
      }
      if btnComingFrom == "second"
      {
       print("you are coming from second button")
      }
}

如何识别我来自哪个按钮

5 个答案: