UITabBar图标文字颜色

Question

如何更改UITabBar的文本颜色（如果它很重要，它包含在UINavigationController中）？ 如果我写这个 -

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

然后颜色会像预期的那样变成绿色，但如果我写这个 -

UITabBar.appearance().tintColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1.0)

文字变得不可见

同样如此

UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.redColor()], forState:.Selected) //red color 

UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor(red: CGFloat(104), green: CGFloat(154), blue: CGFloat(26), alpha: CGFloat(1))], forState:.Selected) //invisible

Answer 1

请尝试这样写：

UITabBar.appearance().tintColor = UIColor(red: 255.0/255.0, green: 255.0/255.0, blue: 255.0/255.0, alpha: 1.0)

Answer 2

你必须将红色，绿色和蓝色除以255，就像这样

UIColor(red:255/255.0, green:255/255.0, blue: 255/255.0, alpha: 1.0)