[英]How can I implement a pull down to dismiss a modal view in SwiftUI?
我正在显示一个模态图像选择器,并且希望能够在不单击角落的取消按钮的情况下关闭视图(通过像 UIKit 一样下拉)。
我的图像选择器与此一起显示。
.sheet(isPresented: $isShowPhotoLibrary) {
ImagePicker(sourceType: .photoLibrary)
}
并像这样实例化......
struct ImagePicker: UIViewControllerRepresentable {
var sourceType: UIImagePickerController.SourceType = .photoLibrary
func makeUIViewController(context: UIViewControllerRepresentableContext<ImagePicker>) -> UIImagePickerController {
// Return an instance of UIImagePickerController
let imagePicker = UIImagePickerController()
imagePicker.allowsEditing = false
imagePicker.sourceType = sourceType
return imagePicker
}
func updateUIViewController(_ uiViewController: UIImagePickerController, context: UIViewControllerRepresentableContext<ImagePicker>) {
}
}
UIImagePickerController
覆盖整个工作表的区域并且不允许处理拖动,因此,作为一种解决方法,一种可能的方法是添加某种凹口(概念是可识别的,因此可用性会很清楚)
这是一个演示(您可以根据您的应用程序设计构建样式/背景)
VStack(spacing: 0) {
RoundedRectangle(cornerRadius: 2)
.frame(width: 60, height: 4).foregroundColor(.gray)
.padding(.vertical, 4)
ImagePicker(sourceType: .photoLibrary)
}
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