UIView touch event in controller

Question

How can I add UIView touchbegin action or touchend action programmatically as Xcode is not providing from Main.storyboard?

Solution 1

You will have to add it through code. First, create the view and add it to the hierarchy:

var myView = UIView(frame: CGRectMake(100, 100, 100, 100))
self.view.addSubview(myView) 

After that initialize gesture recognizer. Until Swift 2:

let gesture = UITapGestureRecognizer(target: self, action: "someAction:")

After Swift 2:

let gesture = UITapGestureRecognizer(target: self, action:  #selector (self.someAction (_:)))

Then bind it to the view:

self.myView.addGestureRecognizer(gesture)

    

Swift 3:

func someAction(_ sender:UITapGestureRecognizer){     
  // do other task
}
    

Swift 4 just add @objc before func:

@objc func someAction(_ sender:UITapGestureRecognizer){     
    // do other task
}

Swift UI:

Text("Tap me!").tapAction {
    print("Tapped!")
}

Solution 2

Swift 4 / 5:

let gesture = UITapGestureRecognizer(target: self, action:  #selector(self.checkAction))
self.myView.addGestureRecognizer(gesture)

@objc func checkAction(sender : UITapGestureRecognizer) {
    // Do what you want
}

Swift 3:

let gesture = UITapGestureRecognizer(target: self, action:  #selector(self.checkAction(sender:)))
self.myView.addGestureRecognizer(gesture)

func checkAction(sender : UITapGestureRecognizer) {
    // Do what you want
}

Solution 3

Updating @Crashalot's answer for Swift 3.x:

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    if let touch = touches.first {
        let currentPoint = touch.location(in: self)
        // do something with your currentPoint
    }
}

override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
    if let touch = touches.first {
        let currentPoint = touch.location(in: self)
        // do something with your currentPoint
    }
}

override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
    if let touch = touches.first {
        let currentPoint = touch.location(in: self)
        // do something with your currentPoint
    }
}

Solution 4

Updating @Chackle's answer for Swift 2.x:

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
    if let touch = touches.first {
        let currentPoint = touch.locationInView(self)
        // do something with your currentPoint
    }
}

override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
    if let touch = touches.first {
        let currentPoint = touch.locationInView(self)
        // do something with your currentPoint
    }
}

override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
    if let touch = touches.first {
        let currentPoint = touch.locationInView(self)
        // do something with your currentPoint
    }
}

Solution 5

For swift 4

@IBOutlet weak var someView: UIView!  
let gesture = UITapGestureRecognizer(target: self, action:  #selector (self.someAction (_:)))
self.someView.addGestureRecognizer(gesture)

@objc func someAction(_ sender:UITapGestureRecognizer){
    print("view was clicked")
}

View more solutions

Comments

[Miknash]

That one is for button, the OP wants to add event for UIView

[Suragch]

Use a UILongPressGestureRecognizer with the minimumPressDuration set to zero. See this answer. It doesn't require subclassing or overriding anything.

[dhaval shah]

@Chacle, I have more than 10 Uiview in my page, and i want to add action in some of Sub UIView. So for that what should i change?

[Chackle]

It depends what you want to use it for. Do you want to tell which UIView you press or do you want to handle some presses in each of the UIView?

[dhaval shah]

I have did that it is giving me an error when i click on the uiView. My code: let gesture = UITapGestureRecognizer(target: self.uiPendingView, action: "touchPending") self.uiPendingView.addGestureRecognizer(gesture) and method: func touchPending(sender: AnyObject) { println("METHOD>>>>>>>>>>>>>>>>>") }

[dhaval shah]

I want touchevent for some specifi UIview only.

[Rizwan Shaikh]

just add : in "touchPending:" ans in function it look like func touchPending(sender: UITapGestureRecognizer)

[Miknash]

you are missing ':' in action.

[C Williams]

Hi, How can I distinguish which UIView got clicked when they all have the same someAction function?

[Miknash]

Easiest way would be to use tag property and then in function determine which view is sender

[Yogesh Patel]

Very well great example thanks to showing me!! that we can also do this using touchEvent .. i know only two way button and gesture.. Thanks +1

[Wimukthi Rajapaksha]

Furthermore you can design a custom view xib and then bind it into the touch event. But it depends on your requirement. [Here] (stackoverflow.com/questions/27371194/…)

[J A S K I E R]

FIRST 2 LINES SHOULD BE CALLED FROM VIEWDIDLOAD!

[Keval Langalia]

by the way, this touch will not work in simulator. so if you're working on simulator, you can't test the code.