IOS 雜筆－13（appearance的巧妙使用）
阿新 • • 發佈：2017-06-19
uic nsf reg ray settitle text src con sel 
NSDictionary * attrs = @{
NSFontAttributeName:[UIFont systemFontOfSize:13],
NSForegroundColorAttributeName:[UIColor grayColor]
};
NSDictionary * selectAttrs = @{
NSFontAttributeName:[UIFont systemFontOfSize:12],
NSForegroundColorAttributeName:[UIColor darkGrayColor]
};
UITabBarItem * item = [UITabBarItem appearance];
[item setTitleTextAttributes:attrs forState:UIControlStateNormal];
[item setTitleTextAttributes:selectAttrs forState:UIControlStateSelected];IOS 雜筆－13（appearance的巧妙使用）