我使用下面的代码来自定义我的UINavigationBar在显示ContactPickerViewController时的外观:idspecialNavBarAppearance=[UINavigationBarappearanceWhenContainedInInstancesOfClasses:@[[CNContactPickerViewControllerclass]]];[specialNavBarAppearancesetBarTintColor:[UIColorcolorWithRed:213/255.0fgreen:38/255.0fblue:46/255.0falpha