1.文字设置
[tabBaritem setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor colorWithRed:97 / 255.0 green:197 / 255.0 blue:6 / 255.0 alpha:1.0]} forState:UIControlStateSelected];
[tabBaritem setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor colorWithRed:97 / 255.0 green:197 / 255.0 blue:6 / 255.0 alpha:1.0]} forState:UIControlStateSelected];