Tab icon with UIAlertAction swift?
@IBAction func addToCart(sender: AnyObject) {
let itemObjectTitle = itemObject.valueForKey("itemDescription") as! String
let alertController = UIAlertController(title: "Add \(itemObjectTitle) to cart?", message: "", preferredStyle: .Alert)
let yesAction = UIAlertAction(title: "Yes", style: UIAlertActionStyle.Default) { (action) in
var tabArray = self.tabBarController?.tabBar.items as NSArray!
var tabItem = tabArray.objectAtIndex(1) as! UITabBarItem
let badgeValue = "1"
if let x = badgeValue.toInt() {
tabItem.badgeValue = "\(x)"
}
}
I don't know why I can't just do + = "(x)"
Error: binary operator '+ =' cannot be applied to operands of type String? and 'String'
I want it to increase by 1 every time the user selects "Yes". Right now, obviously, he remains at level 1.
+3
Mike
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2 answers
You can try to access the badgeValue badge and convert it to Integer like this:
Swift 2
if let badgeValue = tabBarController?.tabBar.items?[1].badgeValue,
nextValue = Int(badgeValue)?.successor() {
tabBarController?.tabBar.items?[1].badgeValue = String(nextValue)
} else {
tabBarController?.tabBar.items?[1].badgeValue = "1"
}
Swift 3 or later
if let badgeValue = tabBarController?.tabBar.items?[1].badgeValue,
let value = Int(badgeValue) {
tabBarController?.tabBar.items?[1].badgeValue = String(value + 1)
} else {
tabBarController?.tabBar.items?[1].badgeValue = "1"
}
To remove a badge, simply assign nil to the badgeValue badge, overriding the viewDidAppear method:
override func viewDidAppear(animated: Bool) {
tabBarController?.tabBar.items?[1].badgeValue = nil
}
+10
Leo dabus
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Works with Swift 2:
let tabController = UIApplication.sharedApplication().windows.first?.rootViewController as? UITabBarController
let tabArray = tabController!.tabBar.items as NSArray!
let alertTabItem = tabArray.objectAtIndex(2) as! UITabBarItem
if let badgeValue = (alertTabItem.badgeValue) {
let intValue = Int(badgeValue)
alertTabItem.badgeValue = (intValue! + 1).description
print(intValue)
} else {
alertTabItem.badgeValue = "1"
}
+1
Mostafa mohamed raafat
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