UITabbarItem default color swift

Question

hi i want to change the unselected bur item color to white and i wrote this code :

for item in self.tabBar.items as [UITabBarItem]! {
        if let image = item.image {
            item.image = image.imageWithColor(UIColor.whiteColor()).imageWithRenderingMode(.AlwaysOriginal)
        }
    }

but i gives me this error in the first line :

fatal error: unexpectedly found nil while unwrapping an Optional value

what should i do?

Are you using a custom image as Tab Bar Item Icon or a System Image? — Ishan Handa, Sep 22 '15 at 16:10
Please expand your question with more of your code. A simple iteration like "for item in self.tabBar.items! {}" works well in a standard UITabBarController if there are tabbar items — peacer212, Sep 22 '15 at 16:27
@peacer212 yes i know and it used to work but when i added local notification, it stopped working. i don't know why because these two are totally irrelevant. — Farzam, Sep 22 '15 at 16:45
I can't really help you because I can't reproduce the error. Could you make a [GIST](https://gist.github.com/) with a more complete code example? — peacer212, Sep 22 '15 at 16:54
@peacer212 sure. but before that, is there any other way to make the tabBarItems white? — Farzam, Sep 22 '15 at 16:56
Your approach works fine, I just tested it with the `getImageWithColor ` function of this [link](http://stackoverflow.com/questions/26542035/create-uiimage-with-solid-color-in-swift) — peacer212, Sep 22 '15 at 17:11

score 0 · Answer 1 · edited May 23 '17 at 11:51

Here is a minimum code example that works for me

class MyTabBarController : UITabBarController {

    override func viewDidLoad() {

        if let items = self.tabBar.items {
            for item : UITabBarItem in items {
                if let image = item.image {
                    item.image = getImageWithColor(UIColor.whiteColor(), size: image.size).imageWithRenderingMode(.AlwaysOriginal)
                }
            }
        }
    }

    func getImageWithColor(color: UIColor, size: CGSize) -> UIImage {
        let rect = CGRectMake(0, 0, size.width, size.height)
        UIGraphicsBeginImageContextWithOptions(size, false, 0)
        color.setFill()
        UIRectFill(rect)
        let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return image
    }

}

The getImageWithColor function is taken from this answer. In case you also want the selected tabs to be white squares, set the item.selectedImage property as well.

this works kinda right but it made a white box instead of changing the icons to white — Farzam, Sep 22 '15 at 18:04
ok i fixed it. i changed the function a little bit and now it works fine. thanks. — Farzam, Sep 22 '15 at 18:10
I'm glad it worked this way. Could you update your question the code you used for future references? — peacer212, Sep 22 '15 at 18:29

UITabbarItem default color swift

1 Answers1