How to identify i come from which button - ios

Question

These both button shows same 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

Add a property to your AddApartmentVC called action and set it before you push the view controller.
First create an enum:
enum Action {
case edit, newDept, unknown
}
Then define this property in your AddApartmentVC:
var action = Action.unknown
Then in your buttons' actions, set the property to the desired value:
editDeptt.action = .edit
or
addDepttVC.action = .newDept
Finally, in viewDidLoad(), check the value:
override func viewDidLoad() {
super.viewDidLoad()
switch(action) {
case .edit:
// do something for edit
case .newDept
// create a new Dept
case .unknown
print("what am I doing here?")
}
}

Answer 2

Add an instance variable name identify in your AddDepartmentVC and pass set the value of the same from your current VC like this
let editDeptt = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
editDeptt.identify = "button1"
Then you can push it and check the variable in AddDepartmentVC

Answer 3

In ViewController2.swift, declare one variable like this
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
}
}
In ViewController 1, set originTag like this.
#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

Simply assign a tag for button -
Button1.tag=1
Button2.tag=2
Then check your button -
func onClickButton(sender: UIButton){
switch(sender.tag){
case 101 :
print("I am from button 1")
default :
print("I am from button 2")
}
}

Answer 5

use following it's perfectly working for you.
Take one public variable above class like below in Viewcontroller1.Swift
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")
}
}