UITabBarController最初高亮显示所有选项卡栏项目图像

Question

I'm programmatically instantiating a UITabBarController that will manage 2 view controllers, and then setting it as the rootViewController . However when the views appear, it highlights all the tab item's images (although the text is properly highlighted). No matter what I set to the selectedIndex the images will all appear highlighted. Only when you tap on the tab bar items does it actually toggle the highlighted state on the images. What's going on here?

Code:

UITabBarController *tabController = [[UITabBarController alloc] init];
UIStoryboard *storyboard = [self storyboard];
OGVideoStreamViewController *questionsController = [storyboard instantiateViewControllerWithIdentifier:@"OGVideoStreamViewController"];
questionsController.isQuestion = YES;
OGVideoStreamViewController *answersController = [storyboard instantiateViewControllerWithIdentifier:@"OGVideoStreamViewController"];
answersController.isQuestion = NO;
OGMatchesViewController *matchesController = [[OGMatchesViewController alloc] initWithNibName:@"OGMatchesViewController" bundle:nil];

questionsController.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"Questions" image:[UIImage imageNamed:@"Tab Icon - Questions"] tag:0];
answersController.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"Answers" image:[UIImage imageNamed:@"Tab Icon - Answers"] tag:1];
matchesController.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"Inbox" image:[UIImage imageNamed:@"Tab Icon - Inbox"] tag:2];

[tabController setViewControllers:@[questionsController, answersController, matchesController] animated:NO];
tabController.selectedViewController = questionsController;


[[UIApplication sharedApplication] keyWindow].rootViewController = tabController;

Answer 1

I've had the same problem and it was due to me calling:

[UIView appearance].tintColor = [UIColor colorWithRed:1.000
                        green:0.793
                         blue:0.236
                        alpha:1.000];

I called it in my AppDelegate, so i could change it to the following:

self.window.tintColor = [UIColor colorWithRed:1.000
                    green:0.793
                     blue:0.236
                    alpha:1.000];