在CNContactPicker中更改取消和完成按钮的颜色

Question

let cnPicker = CNContactPickerViewController()
cnPicker.delegate = self
self.present(cnPicker, animated: true, completion: nil)

取消和完成按钮为白色。

我需要将它们更改为黑色，找不到任何信息。

我该怎么做？

Answer 1

确实如此，在当前

上更改UINavigationBar.appearance()的条形tintcolor和tintcolor

let cnPicker = CNContactPickerViewController()
 cnPicker.delegate = self
 changeAppearance()
self.present(cnPicker, animated: true, completion: nil)

 func changeAppearance() {
    UINavigationBar.appearance().tintColor = .black
    UINavigationBar.appearance().barTintColor = . black
    UINavigationBar.appearance().titleTextAttributes = [NSAttributedStringKey.foregroundColor:.black]
    UINavigationBar.appearance().barStyle = .white // customize 
}

关闭CNContactPickerViewController再次更改外观

 func contactPickerDidCancel(_ picker: CNContactPickerViewController) 
{
    resetAppearance()
}

func contactPicker(_ picker: CNContactPickerViewController, didSelect contact: CNContact) {
    resetAppearance()
}

func contactPicker(_ picker: CNContactPickerViewController, didSelect contactProperty: CNContactProperty) {
    resetAppearance()
}

 func resetAppearance() {
    UINavigationBar.appearance().tintColor = .white
    UINavigationBar.appearance().barTintColor = .white
    UINavigationBar.appearance().titleTextAttributes = [NSAttributedStringKey.foregroundColor:.black]
    UINavigationBar.appearance().barStyle = .black // customize 
}