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

User · Answer

Swift 4 2    IBOutlet weak var viewLabel1  UIView   IBOutlet weak var viewLabel2  UIView    override func viewDidLoad         super viewDidLoad        let myView   UITapGestureRecognizer target  self  action   selector someAction           self viewLabel1 addGestureRecognizer myView       objc func someAction   sender UITapGestureRecognizer      viewLabel2 isHidden   true

User · Answer

Put this in your UIView subclass  it s easiest if you make a sublcass for this functionality    class YourView  UIView        Define your initialisers here    override func touchesBegan touches  Set lt NSObject gt   withEvent event  UIEvent        if let touch   touches first as  UITouch         let currentPoint   touch locationInView self           do something with your currentPoint              override func touchesMoved touches  Set lt NSObject gt   withEvent event  UIEvent        if let touch   touches first as  UITouch         let currentPoint   touch locationInView self           do something with your currentPoint              override func touchesEnded touches  Set lt NSObject gt   withEvent event  UIEvent        if let touch   touches first as  UITouch         let currentPoint   touch locationInView self           do something with your currentPoint

User · Answer

Create outlets from views that were created in StoryBoard    IBOutlet weak var redView  UIView   IBOutlet weak var orangeView  UIView   IBOutlet weak var greenView  UIView       Override the touchesBegan method  There are 2 options  everyone can determine which one is better for him    Detect touch in special view   override func touchesBegan   touches  Set lt UITouch gt   with event  UIEvent          if let touch   touches first           if touch view    self redView               tapOnredViewTapped             else if touch view    self orangeView               orangeViewTapped             else if touch view    self greenView               greenViewTapped             else               return                     Detect touch point on special view   override func touchesBegan   touches  Set lt UITouch gt   with event  UIEvent         if let touch   touches first           let location   touch location in  view          if redView frame contains location                redViewTapped             else if orangeView frame contains location                orangeViewTapped             else if greenView frame contains location                greenViewTapped                         Lastly  you need to declare the functions that will be called  depending on which view the user clicked   func redViewTapped         print  redViewTapped      func orangeViewTapped         print  orangeViewTapped      func greenViewTapped         print  greenViewTapped

User · Answer

Updating  Crashalot s answer for Swift 3 x   override func touchesBegan   touches  Set lt UITouch gt   with event  UIEvent         if let touch   touches first           let currentPoint   touch location in  self             do something with your currentPoint          override func touchesMoved   touches  Set lt UITouch gt   with event  UIEvent         if let touch   touches first           let currentPoint   touch location in  self             do something with your currentPoint          override func touchesEnded   touches  Set lt UITouch gt   with event  UIEvent         if let touch   touches first           let currentPoint   touch location in  self             do something with your currentPoint

User · Answer

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

User · Answer

Just an update to above answers    If you want to have see changes in the click event  i e  Color of your UIVIew shud change whenever user clicks the UIView then make changes as below     class ClickableUIView  UIView       override func touchesBegan touches  Set lt UITouch gt   withEvent event  UIEvent                 if let touch   touches first                   let currentPoint   touch locationInView self                     do something with your currentPoint                            self backgroundColor   UIColor magentaColor    Color when UIView is clicked                     override func touchesMoved touches  Set lt UITouch gt   withEvent event  UIEvent                 if let touch   touches first                   let currentPoint   touch locationInView self                     do something with your currentPoint                            self backgroundColor   UIColor magentaColor    Color when UIView is clicked                     override func touchesEnded touches  Set lt UITouch gt   withEvent event  UIEvent                 if let touch   touches first                   let currentPoint   touch locationInView self                     do something with your currentPoint                            self backgroundColor   UIColor whiteColor    Color when UIView is not clicked      class closes here   Also  call this Class from Storyboard  amp  ViewController as    IBOutlet weak var panVerificationUIView ClickableUIView

User · Answer

You will have to add it through code  Try this              1 create UIView programmetically     var myView   UIView frame  CGRectMake 100  100  100  100          2 add myView to UIView hierarchy     self view addSubview myView          3  add action to myView     let gesture   UITapGestureRecognizer target  self  action   someAction           or for swift 2       let gestureSwift2AndHigher   UITapGestureRecognizer target  self  action    selector  self someAction            self myView addGestureRecognizer gesture       func someAction sender UITapGestureRecognizer                  do other task               or for Swift 3     func someAction   sender UITapGestureRecognizer                  do other task               or for Swift 4      objc func someAction   sender UITapGestureRecognizer                  do other task               update for Swift UI      Text  Tap me             tapAction                print  Tapped

User · Answer

Updating  stevo mit s answer for Swift 4 x   override func touchesBegan   touches  Set lt UITouch gt   with event  UIEvent         if let touch   touches first           let currentPoint   touch location in  self view             do something with your currentPoint          override func touchesMoved   touches  Set lt UITouch gt   with event  UIEvent         if let touch   touches first           let currentPoint   touch location in  self view             do something with your currentPoint          override func touchesEnded   touches  Set lt UITouch gt   with event  UIEvent         if let touch   touches first           let currentPoint   touch location in  self view             do something with your currentPoint

User · Answer

you can used this way  create extension   extension UIView        func addTapGesture action    escaping   - gt Void            let tap   MyTapGestureRecognizer target  self   action   selector self handleTap               tap action   action         tap numberOfTapsRequired   1          self addGestureRecognizer tap          self isUserInteractionEnabled   true             objc func handleTap   sender  MyTapGestureRecognizer            sender action             class MyTapGestureRecognizer  UITapGestureRecognizer       var action      - gt Void     nil     and use this way    IBOutlet weak var testView  UIView  testView addTapGesture

User · Answer

Updating  Chackle s answer for Swift 2 x   override func touchesBegan touches  Set lt UITouch gt   withEvent event  UIEvent         if let touch   touches first           let currentPoint   touch locationInView self             do something with your currentPoint          override func touchesMoved touches  Set lt UITouch gt   withEvent event  UIEvent         if let touch   touches first           let currentPoint   touch locationInView self             do something with your currentPoint          override func touchesEnded touches  Set lt UITouch gt   withEvent event  UIEvent         if let touch   touches first           let currentPoint   touch locationInView self             do something with your currentPoint

User · Answer

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

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