SwiftUI 2.0 List with children - 如何让显示按钮的可点击区域覆盖整个列表项
SwiftUI 2.0 List with children - how to make the tappable area of the disclosure button cover the whole list item
我正在为 iOS 14 制作一个 SwiftUI 应用程序,我有一个侧边栏列表,它使用列表的新 children:
属性使列表可扩展:
但是,目前我只能在精确单击披露箭头时展开此列表。例如,当我单击 'My Cool Project' 文本时,我希望能够扩展此列表。
这在“文件”应用程序中是可能的 - 当我单击 'Locations' 的文本时,我可以看到“位置”项的所有子项,但我不知道如何在我的应用程序中执行此操作应用
澄清一下,每个项目的 List
项是一个 Text
视图,子列表项是 NavigationLink
这种行为在 SwiftUI 中是否可行,甚至是通过 onTapGesture 编程或使用 List
以外的其他东西?提前感谢任何 help/advice!
这是一个方法演示(当然,在您的项目中,您会将 expand/collapse 状态移动到视图模型中)
struct DemoDisclosureGroups: View {
let items: [Bookmark] = [.example1, .example2, .example3]
@State private var flags: [Bool] = [false, false, false]
var body: some View {
List {
ForEach(Array(items.enumerated()), id: \.1.id) { i, group in
DisclosureGroup(isExpanded: $flags[i]) {
ForEach(group.items ?? []) { item in
Label(item.name, systemImage: item.icon)
}
} label: {
Label(group.name, systemImage: group.icon)
.contentShape(Rectangle())
.onTapGesture {
withAnimation {
self.flags[i].toggle()
}
}
}
}
}
}
}
struct Bookmark: Identifiable {
let id = UUID()
let name: String
let icon: String
var items: [Bookmark]?
// some example websites
static let apple = Bookmark(name: "Apple", icon: "1.circle")
static let bbc = Bookmark(name: "BBC", icon: "square.and.pencil")
static let swift = Bookmark(name: "Swift", icon: "bolt.fill")
static let twitter = Bookmark(name: "Twitter", icon: "mic")
// some example groups
static let example1 = Bookmark(name: "Favorites", icon: "star", items: [Bookmark.apple, Bookmark.bbc, Bookmark.swift, Bookmark.twitter])
static let example2 = Bookmark(name: "Recent", icon: "timer", items: [Bookmark.apple, Bookmark.bbc, Bookmark.swift, Bookmark.twitter])
static let example3 = Bookmark(name: "Recommended", icon: "hand.thumbsup", items: [Bookmark.apple, Bookmark.bbc, Bookmark.swift, Bookmark.twitter])
}
我正在为 iOS 14 制作一个 SwiftUI 应用程序,我有一个侧边栏列表,它使用列表的新 children:
属性使列表可扩展:
但是,目前我只能在精确单击披露箭头时展开此列表。例如,当我单击 'My Cool Project' 文本时,我希望能够扩展此列表。
这在“文件”应用程序中是可能的 - 当我单击 'Locations' 的文本时,我可以看到“位置”项的所有子项,但我不知道如何在我的应用程序中执行此操作应用
澄清一下,每个项目的 List
项是一个 Text
视图,子列表项是 NavigationLink
这种行为在 SwiftUI 中是否可行,甚至是通过 onTapGesture 编程或使用 List
以外的其他东西?提前感谢任何 help/advice!
这是一个方法演示(当然,在您的项目中,您会将 expand/collapse 状态移动到视图模型中)
struct DemoDisclosureGroups: View {
let items: [Bookmark] = [.example1, .example2, .example3]
@State private var flags: [Bool] = [false, false, false]
var body: some View {
List {
ForEach(Array(items.enumerated()), id: \.1.id) { i, group in
DisclosureGroup(isExpanded: $flags[i]) {
ForEach(group.items ?? []) { item in
Label(item.name, systemImage: item.icon)
}
} label: {
Label(group.name, systemImage: group.icon)
.contentShape(Rectangle())
.onTapGesture {
withAnimation {
self.flags[i].toggle()
}
}
}
}
}
}
}
struct Bookmark: Identifiable {
let id = UUID()
let name: String
let icon: String
var items: [Bookmark]?
// some example websites
static let apple = Bookmark(name: "Apple", icon: "1.circle")
static let bbc = Bookmark(name: "BBC", icon: "square.and.pencil")
static let swift = Bookmark(name: "Swift", icon: "bolt.fill")
static let twitter = Bookmark(name: "Twitter", icon: "mic")
// some example groups
static let example1 = Bookmark(name: "Favorites", icon: "star", items: [Bookmark.apple, Bookmark.bbc, Bookmark.swift, Bookmark.twitter])
static let example2 = Bookmark(name: "Recent", icon: "timer", items: [Bookmark.apple, Bookmark.bbc, Bookmark.swift, Bookmark.twitter])
static let example3 = Bookmark(name: "Recommended", icon: "hand.thumbsup", items: [Bookmark.apple, Bookmark.bbc, Bookmark.swift, Bookmark.twitter])
}