I've been trying to find the solution to this for the last week, and I have had no luck after trying every possible solution I could find or think of. Every solution I found and have attempted has either not worked, or been outdated.
I have 5 UITabBarItem
's in a UITabBar
placed within UITabBarController
. I want to change the background color of the UITabBarItem
when it is selected, and of course have it change back when the selected item changes.
I am using Swift, and iOS SDK 8.3 in Xcode 6.3.1. If you can only answer in Objective-C that is fine too, any answer will help! Thank you all in advance, I really appreciate it!
EDIT: Here is a visual example of what I would want it to do.
In your tabBarController, you can set the default UITabBar tintColor, barTintColor, selectionIndicatorImage (cheating a bit here) and renderingMode of the images, see comments below:
class MyTabBarController: UITabBarController, UINavigationControllerDelegate {
...
override func viewDidLoad() {
...
// Sets the default color of the icon of the selected UITabBarItem and Title
UITabBar.appearance().tintColor = UIColor.redColor()
// Sets the default color of the background of the UITabBar
UITabBar.appearance().barTintColor = UIColor.blackColor()
// Sets the background color of the selected UITabBarItem (using and plain colored UIImage with the width = 1/5 of the tabBar (if you have 5 items) and the height of the tabBar)
UITabBar.appearance().selectionIndicatorImage = UIImage().makeImageWithColorAndSize(UIColor.blueColor(), size: CGSizeMake(tabBar.frame.width/5, tabBar.frame.height))
// Uses the original colors for your images, so they aren't not rendered as grey automatically.
for item in self.tabBar.items as! [UITabBarItem] {
if let image = item.image {
item.image = image.imageWithRenderingMode(.AlwaysOriginal)
}
}
}
...
}
And you will want to extend the UIImage class to make the plain colored image with the size you need:
extension UIImage {
func makeImageWithColorAndSize(color: UIColor, size: CGSize) -> UIImage {
UIGraphicsBeginImageContextWithOptions(size, false, 0)
color.setFill()
UIRectFill(CGRectMake(0, 0, size.width, size.height))
var image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
}