iOS 之 UITabBar 设置标题 Console 提示:

问题现象：

2018-02-24 14:17:32.518 WeiBo[6691:205592] button text attributes only respected for UIControlStateNormal, UIControlStateSelected and UIControlStateDisabled. state = 1 is interpreted as UIControlStateSelected.

vc.tabBarItem.setTitleTextAttributes([NSAttributedStringKey.foregroundColor: .orange],
                                     for: .highlighted)

改为：

vc.tabBarItem.setTitleTextAttributes([NSAttributedStringKey.foregroundColor: .orange],
                                     for: .selected)