How to change UITabBar Selection color

问题:

I need to change the selection color of UITabBar from default blue to red. How do we do this.

回答1:

Update September 2017: It's been two years since I've written this answer and since it's receiving upvotes regularly, I should say this is probably the worst possible answer to this question, it's error prone, likely to break because of iOS updates, hard to debug, etc., so please don't do the things I've written and apply better solutions such as subclassing UITabBar or UITabBarController. Thanks.

You can do this by setting a "tintColor" attribute (Key Path) for you UITabBar.

1. Select the UITabBar in the document outline. (NOT the Controller with the yellow icon.)
2. Select Identity Inspector in the Utilities area.
3. Click the + in "User Defined Runtime Attributes."
4. Add a "tintColor" Key Path of type "Color" and the color you want.

This should do it. You can check it against the screenshot below.

More on this: There's a "Tint" attribute in Identity Inspector of UITabBar which I believed would do the exact same thing but apparently, it does nothing. It's default value is the exact default fill color when a UITabBarItem is selected, so my guess is it would be fixed in the stable release Xcode 7. Fingers crossed.

回答2:

In IOS5, UITabBar has a selectedImageTintColor property which does what you need.

回答3:

In iOS 7 it's simply the tintColor. One way to accomplish this could be to subclass UITabBarViewController, set the custom class in the storyboard, and in your viewDidLoad method of the subclassed tabBarVC add this:

[[self tabBar] setTintColor:[UIColor redColor]];

回答4:

It is extremely easy

Create a custom class of UITabBarController and in -(void)viewDidLoad method add this line:

[[self tabBar] setSelectedImageTintColor:[UIColor greenColor]]; 

回答5:

Because UITextAttributeTextColor is deprecated in iOS 7, you should use:

[UITabBarItem.appearance setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor greenColor]} forState:UIControlStateNormal];    
[UITabBarItem.appearance setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor purpleColor]} forState:UIControlStateSelected];

回答6:

Simply change the following property in Interface Builder for the TabBar

Obviously in my case its White.

回答7:

To achieve above result perform following steps.

Step 1: Add your desired images in Assets.xcassets, and make sure they Render As: Default

Step 2: Select your UITabBar object and set Image Tint color, this color will be selected tab color

Step 3: Select UITabBar object and add Key Path: unselectedItemTintColor, Type: Color, Value: Choose color for unselected item in User Defined Runtime Attributes.

All done.

回答8:

The SDK does not make this easy, but it is technically possible. Apple apparently believes this to be part of their vision of a consistent look and feel.

UITabBar is a subclass of UIView. You can always subclass and implement your own -drawRect:

This is not a trivial task, however, you have to essentially re-implement the class from scratch or you risk some weird side-effects.

回答9:

I've been searching for a way to set the selected text color of a UITabBarItem and have found a dead simple method, using the UIAppearance protocol.

[UITabBarItem.appearance setTitleTextAttributes:@{
        UITextAttributeTextColor : [UIColor greenColor] } forState:UIControlStateNormal];

[UITabBarItem.appearance setTitleTextAttributes:@{
        UITextAttributeTextColor : [UIColor purpleColor] }     forState:UIControlStateSelected];

Please excuse the awful colors!

回答10:

Starting from iOS 8 it's as simple as:

UITabBar.appearance().tintColor = UIColor.redColor()

回答11:

iOS 5.0 fixes this issue but the solution is under NDA. Look up UITabBar in your documentation for an EASY way to do what you want to do.

回答12:

I found the easiest solution -

1. Select Tab Bar in Tab Bar Controller

2. Set Image Tint color

3. Set Tint Color

For reference see the attached image.