How to set image in a tab bar item in Swift? - ios

Question

I have taken a view controller & embedded it in a navigation Controller and again this has been embedded in a tab bar controller. when I am trying to set a image via story board, the image does not appear on a tab bar icon. Here image name is 25.
What can I do? How can I do it programmatically? what should I take proper image size for this purpose?

Answer 1

In your MainTabbarViewController
Bind the outlet of your tabbar:
#IBOutlet weak var myTabBar: UITabBar?
override func viewDidLoad() {
super.viewDidLoad()
myTabBar?.tintColor = UIColor.white
tabBarItem.title = ""
setTabBarItems()
}
set the tabbar items here defined method below:
func setTabBarItems(){
let myTabBarItem1 = (self.tabBar.items?[0])! as UITabBarItem
myTabBarItem1.image = UIImage(named: "Unselected")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
myTabBarItem1.selectedImage = UIImage(named: "Selected ")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
myTabBarItem1.title = ""
myTabBarItem1.imageInsets = UIEdgeInsets(top: 6, left: 0, bottom: -6, right: 0)
let myTabBarItem2 = (self.tabBar.items?[1])! as UITabBarItem
myTabBarItem2.image = UIImage(named: "Unselected")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
myTabBarItem2.selectedImage = UIImage(named: "Selected")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
myTabBarItem2.title = ""
myTabBarItem2.imageInsets = UIEdgeInsets(top: 6, left: 0, bottom: -6, right: 0)
let myTabBarItem3 = (self.tabBar.items?[2])! as UITabBarItem
myTabBarItem3.image = UIImage(named: "Unselected")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
myTabBarItem3.selectedImage = UIImage(named: "Selected")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
myTabBarItem3.title = ""
myTabBarItem3.imageInsets = UIEdgeInsets(top: 6, left: 0, bottom: -6, right: 0)
let myTabBarItem4 = (self.tabBar.items?[3])! as UITabBarItem
myTabBarItem4.image = UIImage(named: "Unselected")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
myTabBarItem4.selectedImage = UIImage(named: "Selected")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
myTabBarItem4.title = ""
myTabBarItem4.imageInsets = UIEdgeInsets(top: 6, left: 0, bottom: -6, right: 0)
}

Answer 2

add AppDelegate class :
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool
{
window=UIWindow(frame: UIScreen.main.bounds)
self.window?.rootViewController = setTabbar()
self.window?.makeKeyAndVisible()
window?.backgroundColor=UIColor.white
return true
}
func setTabbar() -> UITabBarController
{
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let tabbarcntrl = UITabBarController()
let Home = storyboard.instantiateViewController(withIdentifier: "HomeView") // 1st tab bar viewcontroller
let Followed = storyboard.instantiateViewController(withIdentifier: "FollowedView") // 2nd tab bar viewcontroller
let Message = storyboard.instantiateViewController(withIdentifier: "MessageView") // 3rd tab bar viewcontroller
// all viewcontroller embedded navigationbar
let nvHome = UINavigationController(rootViewController: Home)
let nvFollowed = UINavigationController(rootViewController: Followed)
let nvMessage = UINavigationController(rootViewController: Message)
// all viewcontroller navigationbar hidden
nvHome.setNavigationBarHidden(true, animated: false)
nvFollowed.setNavigationBarHidden(true, animated: false)
nvMessage.setNavigationBarHidden(true, animated: false)
tabbarcntrl.viewControllers = [nvHome,nvFollowed,nvMessage]
let tabbar = tabbarcntrl.tabBar
tabbar.barTintColor = UIColor.black
tabbar.backgroundColor = UIColor.black
tabbar.tintColor = UIColor(red: 43/255, green: 180/255, blue: 0/255, alpha: 1)
//UITabBar.appearance().tintColor = UIColor.white
let attributes = [NSFontAttributeName:UIFont(name: "Montserrat-Light", size: 10)!,NSForegroundColorAttributeName:UIColor.white]
let attributes1 = [NSFontAttributeName:UIFont(name: "Montserrat-Light", size: 10)!,NSForegroundColorAttributeName:UIColor(red: 43/255, green: 180/255, blue: 0/255, alpha: 1)]
UITabBarItem.appearance().setTitleTextAttributes(attributes, for: .normal)
UITabBarItem.appearance().setTitleTextAttributes(attributes1, for: .selected)
let tabHome = tabbar.items![0]
tabHome.title = "Home" // tabbar titlee
tabHome.image=UIImage(named: "icon_home.png")?.withRenderingMode(.alwaysOriginal) // deselect image
tabHome.selectedImage = UIImage(named: "icon_home.png")?.withRenderingMode(.alwaysOriginal) // select image
tabHome.titlePositionAdjustment.vertical = tabHome.titlePositionAdjustment.vertical-4 // title position change
let tabFoll = tabbar.items![1]
tabFoll.title = "Followed"
tabFoll.image=UIImage(named: "icon_fold.png")?.withRenderingMode(.alwaysOriginal)
tabFoll.selectedImage=UIImage(named: "icon_fold.png")?.withRenderingMode(.alwaysOriginal)
tabFoll.titlePositionAdjustment.vertical = tabFoll.titlePositionAdjustment.vertical-4
let tabMsg = tabbar.items![3]
tabMsg.title = "Message"
tabMsg.image=UIImage(named: "icon_mail.png")?.withRenderingMode(.alwaysOriginal)
tabMsg.selectedImage=UIImage(named: "icon_mail.png")?.withRenderingMode(.alwaysOriginal)
tabMsg.titlePositionAdjustment.vertical = tabMsg.titlePositionAdjustment.vertical-4
return tabbarcntrl
}

Answer 3

Set both images- for select/selected state

Answer 4

You are doing all the things in right way But the only problem is your tabbaritem image is not in correct size .Just look this table for actual size of tabbaritem images.

Answer 5

In swift 4 and 5 you can use the below extension. Remember one thing always pass the same number of images , selected images and title but if you do not want to set title then pass nil in title.
extension UITabBarController{
func setUpImagaOntabbar(_ selectedImage : [UIImage], _ image : [UIImage], _ title : [String]?){
for (index,vals) in image.enumerated(){
if let tab = self.tabBar.items?[index]{
tab.image = image[index]
tab.image = selectedImage[index]
if let tile = title[index]{
tab.title = title[index]
}
}
}
}
}