Greg Peckory Greg Peckory - 2 months ago 17
Swift Question

Changing tab bar item image and text color iOS

Here is my tab bar:

enter image description here

The following image shows the program being run and the "NEWS" item selected:

enter image description here

It is clear the bar tint color is working fine as I want !

But the tintColor only affects the image and not the text.

Also, when the an item is selected (as seen above, news) the item color goes blue! How do I prevent this from happening? I want it to stay white.

Why is the text changing to a white color when selected but not when it is unselected?

I basically want the item color and text color to be white all the time.

How do I achieve this? Thanks for any help.

Does it require swift code for each individual item?

EDIT:

enter image description here

Answer

From UITabBarItem class docs:

By default, the actual unselected and selected images are automatically created from the alpha values in the source images. To prevent system coloring, provide images with UIImageRenderingModeAlwaysOriginal.

The clue is not whether you use UIImageRenderingModeAlwaysOriginal, the important thing is when to use it.

To prevent the grey color for unselected items, you will just need to prevent the system colouring for the unselected image. Here is how to do this:

var firstViewController:UIViewController = UIViewController()
// The following statement is what you need
var customTabBarItem:UITabBarItem = UITabBarItem(title: nil, image: UIImage(named: "YOUR_IMAGE_NAME")?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal), selectedImage: UIImage(named: "YOUR_IMAGE_NAME"))
firstViewController.tabBarItem = customTabBarItem

As you can see, I asked iOS to apply the original color (white, yellow, red, whatever) of the image ONLY for the UNSELECTED state, and leave the image as it is for the SELECTED state.

Also, you may need to add a tint color for the tab bar in order to apply a different color for the SELECTED state (instead of the default iOS blue color). As per your screenshot above, you are applying white color for the selected state:

self.tabBar.tintColor = UIColor.whiteColor()

EDIT:

enter image description here

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