在iOS 13中,可以通过以下步骤更改ImagePicker导航标题:
UIKit
框架,以便使用相关的类和方法。import UIKit
UIImagePickerControllerDelegate
类,该类将负责处理图片选择器的委托方法。class ImagePickerDelegate: NSObject, UIImagePickerControllerDelegate {
// 实现委托方法
}
navigationController(_:willShow:animated:)
方法来更改导航标题。extension ImagePickerDelegate: UINavigationControllerDelegate {
func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool) {
// 检查当前显示的视图控制器是否为UIImagePickerController
guard let imagePickerController = viewController as? UIImagePickerController else { return }
// 更改导航标题
imagePickerController.navigationBar.topItem?.title = "选择照片"
}
}
UIImagePickerController
实例,并设置其委托为自定义的委托类。let imagePickerController = UIImagePickerController()
imagePickerController.delegate = ImagePickerDelegate()
通过以上步骤,就可以在iOS 13中更改ImagePicker导航标题为"选择照片"。这样用户在选择照片时,导航栏的标题将显示为自定义的标题。
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