setTitleTextAttributes doesn't work for UITabBarItem when it is unselected in swift

Question

I am trying to custom my UITabBarController . I have it embedded in my UIViewController , I also created a class for this UITabBarController .

override func viewDidLoad() {
    super.viewDidLoad()

    //custom tab bar
    self.tabBar.barTintColor = UIColor(red: 0.0/255.0, green: 102.0/255.0, blue: 153.0/255.0, alpha: 1)
    self.tabBar.tintColor = UIColor(red: 171.0/255.0, green: 203.0/255.0, blue: 61.0/255.0, alpha: 1)
    self.tabBarItem.setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.whiteColor()], forState:UIControlState.Normal)
    self.tabBarItem.setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.whiteColor()], forState:UIControlState.Disabled)

    for item in self.tabBar.items as [UITabBarItem]
    {
        item.image = item.selectedImage.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
    }


    // Do any additional setup after loading the view.
}

setTitleTextAttributes doesn't have any effects on the tab bar item. Can somebody please help me to find where the error is?

Answer 1

Here is the code that works in this case to put still in the UITabBarController:

override func viewDidLoad() {
super.viewDidLoad()

//custom tab bar
self.tabBar.barTintColor = UIColor(red: 0.0/255.0, green: 102.0/255.0, blue: 153.0/255.0, alpha: 1)
self.tabBar.tintColor = UIColor(red: 171.0/255.0, green: 203.0/255.0, blue: 61.0/255.0, alpha: 1)

for item in self.tabBar.items as [UITabBarItem]
{
    item.image = item.selectedImage.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
item.setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.whiteColor()], forState:UIControlState.Normal)
    item.setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.whiteColor()], forState:UIControlState.Disabled)
    item.setTitleTextAttributes([NSForegroundColorAttributeName: UIColor(red: 171.0/255.0, green: 203.0/255.0, blue: 61.0/255.0, alpha: 1)], forState:UIControlState.Selected)
}
}

Answer 2

选项卡栏项目属于各个子视图控制器，因此您需要更改这些控制器中的属性，而不是选项卡栏控制器。