UIBarButtonItem in navigation bar programmatically

Question

I ve been looking around for this solution for a while but haven t got any   e g one solution is    self navigationItem setRightBarButtonItem UIBarButtonItem barButtonSystemItem   Stop  target  self  action  nil   animated  true    This code will add a button with  stop  image  Just like this  there are other solutions with  search   refresh  etc  But what if I want to add a button programmatically with the image I want

User · Answer

This is a crazy thing of apple  When you say self navigationItem rightBarButtonItem title then it will say nil while on the GUI it shows Edit or Save  Fresher likes me will take a lot of time to debug this behavior   There is a requirement that the Item will show Edit in the firt load then user taps on it It will change to Save title  To archive this  i did as below     view did load will say Edit title  private func loadRightBarItem         let logoutBarButtonItem   UIBarButtonItem title   Edit   style   done  target  self  action   selector handleEditBtn       self navigationItem rightBarButtonItem    logoutBarButtonItem        tap Edit item will change to Save title   objc private func handleEditBtn         print  clicked on Edit btn       let logoutBarButtonItem   UIBarButtonItem title   Save   style   done  target  self  action   selector handleSaveBtn       self navigationItem rightBarButtonItem    logoutBarButtonItem     blockEditTable isBlock  false        tap Save item will display Edit title   objc private func handleSaveBtn        print  clicked on Save btn       let logoutBarButtonItem   UIBarButtonItem title   Edit   style   done  target  self  action   selector handleEditBtn       self navigationItem rightBarButtonItem    logoutBarButtonItem      saveInvitation       blockEditTable isBlock  true

User · Answer

Setting LeftBarButton with Original Image   let menuButton   UIBarButtonItem image  UIImage named   imagename   withRenderingMode  alwaysOriginal   style   plain  target  self  action   selector classname functionname   self navigationItem leftBarButtonItem    menuButton

User · Answer

Custom button image without setting button frame     You can use init image  UIImage   style  UIBarButtonItemStyle  target  Any   action  Selector   to initializes a new item using the specified image and other properties   let button1   UIBarButtonItem image  UIImage named   imagename    style   plain  target  self  action  Selector  action       action  selector Class MethodName  for swift 3 self navigationItem rightBarButtonItem    button1   Check this Apple Doc  reference      UIBarButtonItem with custom button image using button frame  FOR Swift 3 0        let btn1   UIButton type   custom      btn1 setImage UIImage named   imagename    for   normal      btn1 frame   CGRect x  0  y  0  width  30  height  30      btn1 addTarget self  action   selector Class Methodname   for   touchUpInside      let item1   UIBarButtonItem customView  btn1       let btn2   UIButton type   custom      btn2 setImage UIImage named   imagename    for   normal      btn2 frame   CGRect x  0  y  0  width  30  height  30      btn2 addTarget self  action   selector Class MethodName   for   touchUpInside      let item2   UIBarButtonItem customView  btn2         self navigationItem setRightBarButtonItems  item1 item2   animated  true      FOR Swift 2 0 and older   let btnName   UIButton   btnName setImage UIImage named   imagename    forState   Normal  btnName frame   CGRectMake 0  0  30  30  btnName addTarget self  action  Selector  action    forControlEvents   TouchUpInside          Set Right Left Bar Button item let rightBarButton   UIBarButtonItem   rightBarButton customView   btnName self navigationItem rightBarButtonItem   rightBarButton      Or simply use init customView   like    let rightBarButton   UIBarButtonItem customView  btnName   self navigationItem rightBarButtonItem   rightBarButton      For System UIBarButtonItem  let camera   UIBarButtonItem barButtonSystemItem   Camera  target  self  action  Selector  btnOpenCamera    self navigationItem rightBarButtonItem   camera     For set more then 1 items use rightBarButtonItems or for left side leftBarButtonItems  let btn1   UIButton   btn1 setImage UIImage named   img1    forState   Normal  btn1 frame   CGRectMake 0  0  30  30  btn1 addTarget self  action  Selector  action1     forControlEvents   TouchUpInside  let item1   UIBarButtonItem   item1 customView   btn1  let btn2   UIButton   btn2 setImage UIImage named   img2    forState   Normal  btn2 frame   CGRectMake 0  0  30  30  btn2 addTarget self  action  Selector  action2     forControlEvents   TouchUpInside  let item2   UIBarButtonItem   item2 customView   btn2  self navigationItem rightBarButtonItems    item1 item2    Using setLeftBarButtonItem or setRightBarButtonItem  let btn1   UIButton   btn1 setImage UIImage named   img1    forState   Normal  btn1 frame   CGRectMake 0  0  30  30  btn1 addTarget self  action  Selector  action1     forControlEvents   TouchUpInside  self navigationItem setLeftBarButtonItem UIBarButtonItem customView  btn1   animated  true        For swift    2 2 action should be  selector Class MethodName      for e g  btnName addTarget self  action   selector Class MethodName   forControlEvents   TouchUpInside

User · Answer

FOR Swift 5  let searchBarButtonItem   UIBarButtonItem image  UIImage named   quot searchIcon quot    style   plain  target  self  action   selector onSearchButtonClicked           self navigationItem rightBarButtonItem    searchBarButtonItem   objc func onSearchButtonClicked   sender  Any       print  quot SearchButtonClicked quot

User · Answer

In Swift 3 0   UIBarButtonItem programmatically set up as follows     override func viewDidLoad             super viewDidLoad           let testUIBarButtonItem   UIBarButtonItem image  UIImage named   quot test png quot    style   plain  target  self  action   selector self clickButton           self navigationItem rightBarButtonItem    testUIBarButtonItem            objc func clickButton                print  quot button click quot

User · Answer

It s much easier with Swift 4 or Swift 4 2  inside your ViewDidLoad method  define your button and add it to the navigation bar   override func viewDidLoad         super viewDidLoad        let logoutBarButtonItem   UIBarButtonItem title   Logout   style   done  target  self  action   selector logoutUser       self navigationItem rightBarButtonItem    logoutBarButtonItem      then you need to define the function that you mentioned inside action parameter as below   objc func logoutUser         print  clicked       You need to add the  objc prefix as it s still making use of the legacy stuff  Objective C

User · Answer

iOS 11  Setting a custom button using constraint   let buttonWidth   CGFloat 30  let buttonHeight   CGFloat 30   let button   UIButton type   custom  button setImage UIImage named   img name    for   normal  button addTarget self  action   selector buttonTapped sender     for   touchUpInside  button widthAnchor constraint equalToConstant  buttonWidth  isActive   true button heightAnchor constraint equalToConstant  buttonHeight  isActive   true  self navigationItem rightBarButtonItem   UIBarButtonItem init customView  button

User · Answer

Just setup UIBarButtonItem with customView  For example     var leftNavBarButton   UIBarButtonItem customView yourButton    self navigationItem leftBarButtonItem   leftNavBarButton   or use setFunction     self navigationItem setLeftBarButtonItem UIBarButtonItem customView  yourButton   animated  true

User · Answer

func viewDidLoad    let homeBtn  UIButton   UIButton type  UIButtonType custom           homeBtn setImage UIImage named   Home png    for               homeBtn addTarget self  action   selector homeAction   for  UIControlEvents touchUpInside           homeBtn frame   CGRect x  0  y  0  width  30  height  30           let homeButton   UIBarButtonItem customView  homeBtn            let backBtn  UIButton   UIButton type  UIButtonType custom           backBtn setImage UIImage named   back png    for               backBtn addTarget self  action   selector backAction   for  UIControlEvents touchUpInside           backBtn frame   CGRect x  -10  y  0  width  30  height  30           let backButton   UIBarButtonItem customView  backBtn          self navigationItem setLeftBarButtonItems  backButton homeButton   animated  true

User · Answer

I have same issue and I have read  answers in another topic then I solve another similar way  I do not know which is more effective  similar issue    play button   IBAction func startIt sender  AnyObject        startThrough          play button  func startThrough         timer   NSTimer scheduledTimerWithTimeInterval 1  target  self  selector  Selector  updateTime    userInfo  nil  repeats  true        let pauseButton   UIBarButtonItem barButtonSystemItem   Pause  target  self  action   pauseIt        self toolBarIt items  removeLast        self toolBarIt items  append  pauseButton       func pauseIt         timer invalidate         let play   UIBarButtonItem barButtonSystemItem   Play  target  self  action   startThrough        self toolBarIt items  removeLast        self toolBarIt items  append  play

User · Answer

I just stumbled upon this question and here is an update for Swift 3 and iOS 10   let testUIBarButtonItem   UIBarButtonItem image  UIImage named   test png    style   plain  target  self  action  nil  self navigationItem rightBarButtonItem    testUIBarButtonItem   It is definitely much faster than creating the UIButton with all the properties and then subsequently adding the customView to the UIBarButtonItem   And if you want to change the color of the image from the default blue to e g  white  you can always change the tint color   test tintColor   UIColor white     PS You should obviously change the selector etc  for your app

[ios] UIBarButtonItem in navigation bar programmatically?

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