UISegmented Control Global Tint in Navigation Controller Header - ios7

Question

Setting the global tint in my tableview header isn't tinting as expected, and appears to be a bug.
When I load the view I get
The right hand side retains the default colour, however if I press the right button and the left again it sets to how you would expect it to be:
This problem is only with the segmented control in my navigation bar. The global tinting works when the control is embedded in a "normal" view.
I have a work around which solves the problem. Being, I setting the right control and then back to the left in viewDidLoad.
So is it a bug ? or am i missing something? Thanks.
Add: I am setting the global tint in the storyboard

Answer 1

It's not a bug. Global tinting works for the objects, whose class is used for tinting. If the specific tint scheme is declared for a class, then all the controls belonging to that class will follow the class tint scheme regardless of the view they are added to.
I have tried implementing this & I am here with this code.
Set the global Tinting for UINavigationBar in appDelegate
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
[[UINavigationBar appearance] setTintColor:[UIColor redColor]];
[[UINavigationBar appearance] setBarTintColor:[UIColor yellowColor]];
...
...
}
and I am adding UISegmentControl in UINavigationBar as well as intableView.tableHeaderView in viewDidLoad method.
UISegmentedControl *segment = [[UISegmentedControl alloc]initWithItems:#[#"One", #"Two"]];
segment.frame = CGRectMake(self.view.frame.size.width/2-75, 0, 150, 40);
[self.navigationController.navigationBar addSubview:segment];
UISegmentedControl *tableSegment = [[UISegmentedControl alloc]initWithItems:#[#"One", #"Two"]];
tableSegment.frame = CGRectMake(self.view.frame.size.width/2-75, 0, 150, 40);
[self.navigationController.navigationBar addSubview:tableSegment];
tableView.tableHeaderView = tableSegment;
This yields following result. The UISegmentControl will be tinted with the UINavigationBar 's global tint if it is added into the UINavigationBar container as SubView, otherwise, it will take the default blue color outside UINavigationBar like in the header of UITableView
Now adding a specific tint color for UISegmentedControl as
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
[[UINavigationBar appearance] setTintColor:[UIColor redColor]];
[[UINavigationBar appearance] setBarTintColor:[UIColor yellowColor]];
[[UISegmentedControl appearance] setTintColor:[UIColor brownColor]];
...
...
}
``
It yields this, The UISegmentControl is affected by its global tint now, regardless of its location (like earlier in UINavigationBar & UITableViewHeader). It is
However the TinitColor of UInavigationBar is still applicable on the leftBarButtonItem because there is no global tint scheme declared for the UIBarButtonItem, hence it is adopting the tintColor of the container it is added to.
Adding more code to Clarify
Using global tint for UISegmentedControl & no other global tinting.
[[UISegmentedControl appearance] setTintColor:[UIColor colorWithRed:39.0/255.0 green:64.0/255.0 blue:112.0/255.0 alpha:1]];
Result: You can see the segment control, but notice the backButton, which is having the default tint of UINavigationBar
Using global tint for UISegmentedControl & UINavigationBar
[[UISegmentedControl appearance] setTintColor:[UIColor colorWithRed:39.0/255.0 green:64.0/255.0 blue:112.0/255.0 alpha:1]];
[[UINavigationBar appearance] setTintColor:[UIColor colorWithRed:39.0/255.0 green:64.0/255.0 blue:112.0/255.0 alpha:1]];
Result: You can see the segment control tint & also notice the backButton, which is having the Global tint of UINavigationBar
I have also done a default selection of UISegmentedControl. If you are getting any other result with this code then there must be some thing extra happening in your code.
I hope that helps.

Answer 2

I've had a big issue with tinting in Xcode 5.0.2 recently. I was playing with both Global Tint and Tint for various items when suddenly the inheritance of tintColor stopped working correctly. I ended up cleaning the Storyboard's XML file manually to fix things out.
If you're not doing any UIAppearance magic in your app, it sure looks like a bug to me.