原來我們通常這樣設(shè)置導(dǎo)航欄、tablebar顏色

    NSMutableDictionary *attrs = [NSMutableDictionary dictionary];
    attrs[NSFontAttributeName] = [UIFont systemFontOfSize:12];
    attrs[NSForegroundColorAttributeName] = [UIColor grayColor];
    
    NSMutableDictionary *selAttrs = [NSMutableDictionary dictionary];
    selAttrs[NSFontAttributeName] = attrs[NSFontAttributeName];
    selAttrs[NSForegroundColorAttributeName] = [UIColor lightGrayColor];
   
    UITabBarItem *item = [UITabBarItem appearance];
    
    [item setTitleTextAttributes:attrs forState:UIControlStateNormal];
    [item setTitleTextAttributes:selAttrs forState: UIControlStateDisabled];

但是發(fā)現(xiàn)

[item setTitleTextAttributes:sforState:UIControlStateDisabled]；

毫無作用，就跟不存在一樣，而

[item setTitleTextAttributes: forState:UIControlStateNormal];

卻是好用的··但是永遠(yuǎn)失去了不可用狀態(tài)的顏色效果
最后經(jīng)過研究，發(fā)現(xiàn)解決方法不再是設(shè)置

[item appearance];

而是設(shè)置

[UITabBar appearance];
[UINavigationBar appearance];

的TintColor，應(yīng)該是新版本更改了api。