CODEWITHSUNDEEP
iphoneuitabbarcontroller
RAGOpoR
RAGOpoR

Reputation: 8168

how to change UITabbar selected color?

according to this post for now, Is apple will also reject this code?

and how to implement what apple will approve?

@interface UITabBar (ColorExtensions)
- (void)recolorItemsWithColor:(UIColor *)color shadowColor:(UIColor *)shadowColor shadowOffset:(CGSize)shadowOffset shadowBlur:(CGFloat)shadowBlur;
@end

@interface UITabBarItem (Private)
@property(retain, nonatomic) UIImage *selectedImage;
- (void)_updateView;
@end

@implementation UITabBar (ColorExtensions)
- (void)recolorItemsWithColor:(UIColor *)color shadowColor:(UIColor *)shadowColor shadowOffset:(CGSize)shadowOffset shadowBlur:(CGFloat)shadowBlur
{
        CGColorRef cgColor = [color CGColor];
        CGColorRef cgShadowColor = [shadowColor CGColor];
        for (UITabBarItem *item in [self items])
                if ([item respondsToSelector:@selector(selectedImage)] &&
                    [item respondsToSelector:@selector(setSelectedImage:)] &&
                    [item respondsToSelector:@selector(_updateView)])
                {
                        CGRect contextRect;
                        contextRect.origin.x = 0.0f;
                        contextRect.origin.y = 0.0f;
                        contextRect.size = [[item selectedImage] size];
                        // Retrieve source image and begin image context
                        UIImage *itemImage = [item image];
                        CGSize itemImageSize = [itemImage size];
                        CGPoint itemImagePosition; 
                        itemImagePosition.x = ceilf((contextRect.size.width - itemImageSize.width) / 2);
                        itemImagePosition.y = ceilf((contextRect.size.height - itemImageSize.height) / 2);
                        UIGraphicsBeginImageContext(contextRect.size);
                        CGContextRef c = UIGraphicsGetCurrentContext();
                        // Setup shadow
                        CGContextSetShadowWithColor(c, shadowOffset, shadowBlur, cgShadowColor);
                        // Setup transparency layer and clip to mask
                        CGContextBeginTransparencyLayer(c, NULL);
                        CGContextScaleCTM(c, 1.0, -1.0);
                        CGContextClipToMask(c, CGRectMake(itemImagePosition.x, -itemImagePosition.y, itemImageSize.width, -itemImageSize.height), [itemImage CGImage]);
                        // Fill and end the transparency layer
                        CGContextSetFillColorWithColor(c, cgColor);
                        contextRect.size.height = -contextRect.size.height;
                        CGContextFillRect(c, contextRect);
                        CGContextEndTransparencyLayer(c);
                        // Set selected image and end context
                        [item setSelectedImage:UIGraphicsGetImageFromCurrentImageContext()];
                        UIGraphicsEndImageContext();
                        // Update the view
                        [item _updateView];
                }
}
@end

Upvotes: 2

Views: 6877

Answers (4)

Jakub
Jakub

Reputation: 13860

for iOS 10 (or higher):

To set selected color just set:

let tabBarAppearace = UITabBar.appearance()
tabBarAppearace.tintColor = UIColor.nowYouBlue

Above will work for all iOS version currently supported, but to change unselected color:

    if #available(iOS 10.0, *) {
        tabBarAppearace.unselectedItemTintColor = UIColor.red
    } else {
        // Fallback on earlier versions
    }

Above code will look like this on iOS 10.

enter image description here

Upvotes: 0

pyanfield
pyanfield

Reputation: 479

[[UITabBar appearance] setSelectedImageTintColor:[UIColor whiteColor]];

Upvotes: 3

Muhammad Rizwan
Muhammad Rizwan

Reputation: 3480

I suggest instead of changing color why don't you use selected tabbaritem image, like In iOS 6 I have change the selected tabbatitem image like -

in tabbar controller delegate method 

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController

{
    if([tabBarController selectedIndex] == 0)
    {
        [viewController.tabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"selected.png"]withFinishedUnselectedImage:[UIImage imageNamed:@"unselect.png"]];
    }    
}

through this you can change your image.

Or you can use directly in your view controllers init(or ViewWillAppear) method, like

        [viewController.tabBarItem setFinishedSelectedImage:[UIImage imageNamed:@"selected.png"]withFinishedUnselectedImage:[UIImage imageNamed:@"unselect.png"]];

Upvotes: 0

Jens Willy Johannsen
Jens Willy Johannsen

Reputation: 764

Yes, Apple will reject an app if you use that code.

I just had an app rejected for using private API calls. Specifically "_updateView". And I used the exact same code as above.

(If other people say that their app got approved with the same code it's just because it wasn't checked for use of private APIs.)

Upvotes: 5

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