How to create a button programmatically

Question

How do I programmatically create graphical elements  like a UIButton  in Swift  I tried to create and add button into a view  but wasn t able to

User · Answer

The API hasn t changed - only the syntax has  You can make a UIButton and add it like this   var button   UIButton frame  CGRectMake 0  0  50  50   self view addSubview button     assuming you re in a view controller

User · Answer

var sampleButton UIButton    override func viewDidLoad       super viewDidLoad        override func viewDidAppear animated  Bool       sampleButton   UIButton type   RoundedRect      sampleButton frame   CGRect x 50  y 500  width 70  height 50     sampleButton  setTitle  Sample  n UI Button   forState   Normal    sampleButton  titleLabel  lineBreakMode    ByWordWrapping   sampleButton  titleLabel  textAlignment    Center   sampleButton  setTitleColor UIColor whiteColor    forState   Normal    sampleButton  layer cornerRadius   6   sampleButton  backgroundColor   UIColor redColor   colorWithAlphaComponent 0 6    sampleButton  tintColor    UIColor brownColor         Add padding around text   sampleButton  titleEdgeInsets   UIEdgeInsetsMake -10 -10 -10 -10    sampleButton  contentEdgeInsets   UIEdgeInsetsMake 5 5 5 5       Action set up   sampleButton  addTarget self  action   sampleButtonClicked   forControlEvents   TouchUpInside    self view addSubview sampleButton         Button Constraints    sampleButton  translatesAutoresizingMaskIntoConstraints   false      To anchor above the tab bar on the bottom of the screen    let bottomButtonConstraint   sampleButton  bottomAnchor constraintEqualToAnchor bottomLayoutGuide topAnchor  constant  -20       edge of the screen in InterfaceBuilder    let margins   view layoutMarginsGuide   let leadingButtonConstraint   sampleButton  leadingAnchor constraintEqualToAnchor margins leadingAnchor     bottomButtonConstraint active   true   leadingButtonConstraint active   true       func sampleButtonClicked       print  sample Button Clicked

User · Answer

You can create like this and you can add action also like this      import UIKit  let myButton   UIButton frame  CGRect x  0  y  0  width  50  height  50    init nibName nibNameOrNil  String   bundle nibBundleOrNil  NSBundle           super init nibName  nibName  bundle  nibBundle           myButton targetForAction  tappedButton    withSender  self     func tappedButton sender  UIButton           println  tapped button

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Swift 3  let btn   UIButton type   custom  as UIButton btn backgroundColor    blue btn setTitle  Button   for   normal  btn frame   CGRect x  100  y  100  width  200  height  100  btn addTarget self  action   selector clickMe   for   touchUpInside  self view addSubview btn   func clickMe sender UIButton       print  Button Clicked       Output

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Swift  Ui Button create programmatically  let myButton   UIButton    myButton titleLabel  frame   CGRectMake 15  54  300  500  myButton titleLabel  text    Button Label  myButton titleLabel  textColor   UIColor redColor   myButton titleLabel  textAlignment    Center self view addSubview myButton

User · Answer

Write this sample code in Swift 4 2 for add Button Programmatically    override func viewDidLoad         super viewDidLoad           let myButton   UIButton frame  CGRect x  100  y  100  width  100  height  50           myButton backgroundColor    green         myButton setTitle  Hello UIButton   for   normal          myButton addTarget self  action   selector myButtonAction   for   touchUpInside          self view addSubview myButton       objc func myButtonAction sender  UIButton         print  My Button tapped

User · Answer

override func viewDidLoad      super viewDidLoad          Do any additional setup after loading the view  typically from a nib       var imageView   UIImageView frame  CGRectMake 100  150  150  150        var image   UIImage named   BattleMapSplashScreen png        imageView image   image      self view addSubview imageView

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Uilabel code   var label  UILabel   UILabel   label frame   CGRectMake 50  50  200  21  label backgroundColor   UIColor blackColor   label textColor   UIColor whiteColor   label textAlignment   NSTextAlignment Center label text    test label  self view addSubview label

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For Swift 3 let button   UIButton   button frame   CGRect x  self view frame size width - 60  y  60  width  50  height  50  button backgroundColor   UIColor red button setTitle  quot your Button Name quot   for   normal  button addTarget self  action   selector buttonAction   for   touchUpInside  self view addSubview button   func buttonAction sender  UIButton         print  quot Button tapped quot      For Swift 4   let button   UIButton    button frame   CGRect x  self view frame size width - 60  y  60  width  50  height  50   button backgroundColor   UIColor red  button setTitle  quot Name your Button  quot   for   normal   button addTarget self  action   selector buttonAction   for   touchUpInside   self view addSubview button     objc func buttonAction sender  UIButton         print  quot Button tapped quot

User · Answer

For create UIButton from storyboard  1 - Drag UIButton object from Object Library to ViewController in storyboard file 2 - Show Assistant editor 3 - Drag with right click from UIButton create above into your class  The result is the following    IBAction func buttonActionFromStoryboard sender  UIButton        println  Button Action From Storyboard       For create UIButton programmatically  1- Write into  override func viewDidLoad              let uiButton      UIButton buttonWithType UIButtonType System  as UIButton         uiButton frame    CGRectMake 16  116  288  30          uiButton setTitle  Second   forState  UIControlState Normal           uiButton addTarget self  action   buttonActionFromCode    forControlEvents  UIControlEvents TouchUpInside          self view addSubview uiButton    2- add the IBAction func    IBAction func buttonActionFromCode sender UIButton        println  Button Action From Code

User · Answer

It is possible  You do everything pretty much the same way except use the swift syntax  For example you could make a UIButton in code like this    var button  UIButton   UIButton frame  CGRectMake 0  0  100  100

User · Answer

For Swift 5 just the same as Swift 4   let button   UIButton    button frame   CGRect x  self view frame size width - 60  y  60  width  50  height  50   button backgroundColor   UIColor red  button setTitle  Name your Button    for   normal   button addTarget self  action   selector buttonAction   for   touchUpInside   self view addSubview button     objc func buttonAction sender  UIButton         print  Button tapped

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Here is a complete solution to add a UIButton programmatically with the targetAction  Swift 2 2  override func viewDidLoad       super viewDidLoad      let button   UIButton frame  CGRect x  100  y  100  width  100  height  50     button backgroundColor    greenColor     button setTitle  Test Button   forState   Normal    button addTarget self  action   selector buttonAction   forControlEvents   TouchUpInside     self view addSubview button     func buttonAction sender  UIButton       print  Button tapped       It is probably better to use NSLayoutConstraint rather than frame to correctly place the button for each iPhone screen   Updated code to Swift 3 1   override func viewDidLoad       super viewDidLoad      let button   UIButton frame  CGRect x  100  y  100  width  100  height  50     button backgroundColor    green   button setTitle  Test Button   for   normal    button addTarget self  action   selector buttonAction   for   touchUpInside     self view addSubview button     func buttonAction sender  UIButton       print  Button tapped       Updated code to Swift 4 2   override func viewDidLoad       super viewDidLoad      let button   UIButton frame  CGRect x  100  y  100  width  100  height  50     button backgroundColor    green   button setTitle  Test Button   for   normal    button addTarget self  action   selector buttonAction   for   touchUpInside     self view addSubview button      objc func buttonAction sender  UIButton       print  Button tapped       The above still works if func buttonAction is declared private or internal

User · Answer

let myFirstButton   UIButton               myFirstButton setTitle  Software Button   forState   Normal              myFirstButton setTitleColor UIColor redColor    forState   Normal              myFirstButton frame   CGRectMake 100  300  150  50              myFirstButton backgroundColor   UIColor purpleColor               myFirstButton layer cornerRadius   14             myFirstButton addTarget self  action   pressed    forControlEvents   TouchUpInside              self view addSubview myFirstButton              myFirstButton hidden true             nameText delegate   self   func pressed sender  UIButton             var alertView   UIAlertView           alertView addButtonWithTitle  Ok           alertView title    title          alertView message    message          alertView show

User · Answer

I usually go for setup an extension of UIBotton  Swift 5   let button  UIButton   UIButton   override func viewDidLoad             super viewDidLoad        button setup title   OK   x  100  y  430  width  220  height  80  color   yellow          buttonD setTitleColor  black  for   normal     extension UIButton       func setup title  String  x  CGFloat  y  CGFloat  width  CGFloat  height  CGFloat  color  UIColor           frame   CGRect x  x  y  y  width  width  height  height          backgroundColor   color         setTitle title   for   normal

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UILabel      let label   UILabel       label frame   CGRectMake 35  100  250  30      label textColor   UIColor blackColor       label textAlignment   NSTextAlignment Center     label text    Hello World      self view addSubview label          UIButton      let btn  UIButton   UIButton type  UIButtonType Custom  as UIButton     btn frame   CGRectMake 130  70  60  20      btn setTitle  Click   forState  UIControlState Normal      btn setTitleColor UIColor blackColor    forState   Normal      btn addTarget self  action Selector  clickAction    forControlEvents  UIControlEvents TouchUpInside      view addSubview btn           Button Action       IBAction func clickAction sender AnyObject                print  Click Action

User · Answer

How to do this using Swift 3 0   func createButton         let button   UIButton type   system      button frame   CGRect x  100 0  y  100 0  width  100 0  height  100 0      button setTitle NSLocalizedString  Button   comment   Button    for   normal      button backgroundColor    green     button addTarget self  action   selector buttonAction sender     for   touchUpInside      view addSubview button      objc func buttonAction sender  UIButton        print  Button pushed

User · Answer

Add this code in viewDidLoad           add Button              var button UIButton frame  CGRectMake 150  240  75  30               button setTitle  Next   forState  UIControlState Normal              button addTarget self  action   buttonTapAction    forControlEvents  UIControlEvents TouchUpInside              button backgroundColor   UIColor greenColor               self view addSubview button    Write this function outside it this will call when you tap on the button  func buttonTapAction sender UIButton         println  Button is working

User · Answer

Yeah in simulator  Some times it wont recognise the selector there is a bug it seems  Even i faced not for your code   then i just changed the action name  selector   It works  let buttonPuzzle UIButton   UIButton frame  CGRectMake 100  400  100  50   buttonPuzzle backgroundColor   UIColor greenColor   buttonPuzzle setTitle  Puzzle   forState  UIControlState Normal  buttonPuzzle addTarget self  action   buttonAction    forControlEvents  UIControlEvents TouchUpInside  buttonPuzzle tag   22  self view addSubview buttonPuzzle    Selector Function is Here   func buttonAction sender UIButton          var btnsendtag UIButton   sender     if btnsendtag tag    22                         println  Button tapped tag 22

User · Answer

You can add UIButton UIlable and UITextfield programmatically in this way    UIButton code     var button     UIButton buttonWithType UIButtonType System  as UIButton let button   UIButton type   System     let preferred over var here button frame   CGRectMake 100  100  100  50  button backgroundColor   UIColor greenColor   button setTitle  Button   forState  UIControlState Normal  button addTarget self  action   Action    forControlEvents  UIControlEvents TouchUpInside  self view addSubview button    UILabel Code  var label  UILabel   UILabel   label frame   CGRectMake 50  50  200  21  label backgroundColor   UIColor blackColor   label textColor   UIColor whiteColor   label textAlignment   NSTextAlignment Center label text    test label  self view addSubview label    UITextField code  var txtField  UITextField   UITextField   txtField frame   CGRectMake 50  70  200  30  txtField backgroundColor   UIColor grayColor   self view addSubview txtField    Hope this is helpful for you

User · Answer

Step 1  Make a new project    Step 2  in ViewController swift  import UIKit  class ViewController  UIViewController        override func viewDidLoad             super viewDidLoad               CODE         let btn   UIButton type  UIButtonType System  as UIButton                 btn backgroundColor   UIColor blueColor           btn setTitle  CALL TPT AGENT   forState  UIControlState Normal          btn frame   CGRectMake 100  100  200  100          btn addTarget self  action   clickMe    forControlEvents  UIControlEvents TouchUpInside          self view addSubview btn              func clickMe sender UIButton           print  CALL              override func didReceiveMemoryWarning             super didReceiveMemoryWarning              Dispose of any resources that can be recreated

User · Answer

This works for me very well   DynamicButtonEvent  IOS  Swift  Xcode   func setupButtonMap        let mapButton   UIButton type   system      mapButton setImage  imageLiteral resourceName   CreateTrip   withRenderingMode  alwaysOriginal   for   normal      mapButton frame   CGRect x  0  y  0  width  34  height  34      mapButton contentMode    scaleAspectFit     mapButton backgroundColor   UIColor clear     mapButton addTarget self  action   selector ViewController btnOpenMap       for   touchUpInside      navigationItem leftBarButtonItem   UIBarButtonItem customView  mapButton         IBAction func btnOpenMap   sender  Any         print  Successful

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func viewDidLoad                        saveActionButton   UIButton frame  CGRect x  self view frame size width - 60  y  0  width  50  height  50                       self saveActionButton backgroundColor   UIColor red  76 255  green  217 255  blue  100 255  alpha  0 7                      saveActionButton addTarget self  action   selector doneAction   for   touchUpInside                      self saveActionButton setTitle  Done   for   normal                      self saveActionButton layer cornerRadius   self saveActionButton frame size width   2                     self saveActionButton layer borderColor   UIColor darkGray cgColor                     self saveActionButton layer borderWidth   1                     self saveActionButton center y   self view frame size height - 80                     self view addSubview saveActionButton                       func doneAction              print  Write your own logic

User · Answer

In Swift 2 and iOS 9 2 1      var button  UIButton   UIButton type  UIButtonType Custom  as UIButton self button frame   CGRectMake 130  70  60  20  self button setTitle  custom button   forState  UIControlState Normal  self button addTarget self  action  buttonActionFuncName   forControlEvents  UIControlEvents TouchUpInside  self button setTitleColor UIColor blackColor    forState   Normal  self button layer borderColor   UIColor blackColor   CGColor self button titleLabel  font   UIFont name   Helvetica-Bold   size  13  self view addSubview self button

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