我正在尝试更改我的自定义标签栏的标签栏项目的图标颜色，
但是setSelectedImageTintColor和setTintColor不能一起工作。
如果编码顺序是

[[UITabBar appearance] setSelectedImageTintColor:[UIColor greenColor]];
[[UITabBar appearance] setTintColor:[UIColor redColor]];

则输出为

如果代码顺序是

[[UITabBar appearance] setTintColor:[UIColor redColor]];
[[UITabBar appearance] setSelectedImageTintColor:[UIColor greenColor]];

则输出为

我在didFinishLaunchingWithOptions方法中使用了以下代码，前两行工作正常，问题出在最后两行

//To set color for unselected tab bar item's title color
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary  dictionaryWithObjectsAndKeys: [UIColor redColor], NSForegroundColorAttributeName, nil] forState:UIControlStateNormal];

//To set color for selected tab bar item's title color
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor greenColor], NSForegroundColorAttributeName,nil] forState:UIControlStateSelected];

//To set color for unselected icons
[[UITabBar appearance] setTintColor:[UIColor redColor]];

//To set color for selected icons
[[UITabBar appearance] setSelectedImageTintColor:[UIColor greenColor]];

**注意-**我有单独的自定义标签栏类，但我不会更改自定义标签栏类中的图标颜色

谢谢期待。