I came from a background in Android development to the iOS world.
I'm trying to avoid those odd patterns (at least for a Android dev) that connects storyboard items directly to my controller (like @IBOutlet).
I want to know if it's possible to create an anonymous function to delegate some events of a UITabBar:
let tabBarDelegate = UITabBarDelegate {
func tabBar(tabBar: UITabBar, didSelectItem item: UITabBarItem!) {
label.text = item.title
}
}
tabBar.delegate = tabBarDelegate
The error I'm facing is this one: 'UITabBarDelegate' cannot be constructed because it has no accessible initializers
.
I'm really new to this world. How can i accomplish that?
You can't instantiate a UITabBarDelegate because it is a protocol (similar to an interface in Java), not a class.
You have to have one of your classes declare that it implements UITabBarDelegate, then set an instance of that class as the tab bar's delegate.
Here's a short example:
class MyViewController: UIViewController, UITabBarDelegate {
//all of UITabBarDelegate's methods are optional, so you don't have to implement them
func tabBar(tabBar: UITabBar, didSelectItem item: UITabBarItem!) {
}
}
var viewController = MyViewController()
var tabBar = UITabBar()
tabBar.delegate = viewController
Also, I don't believe you can create anonymous classes in Swift.
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