[英]How to navigate to another view in NavigationView without NavigationButton in SwiftUI?
[英]SwiftUI NavigationButton: How to navigate to different destinations
List(list) { feature in
NavigationButton(destination: destination)) {
ListCell(feature: feature)
}
}
我想通过更改目标视图而不是每一行的单个视图来导航到不同的视图
有办法吗?
是的,有办法。
这是具有完全动态“单元”的主体。 tableRow
函数呈现单元格的内容,而destination
函数则计算NavigationButton
的目标。
var body: some View {
List {
// Renders the table with all the active conversations
ForEach(appData.currentUser.conversations) { conversation in
NavigationButton(destination: self.destination(for: conversation) ) {
self.tableRow(for: conversation)
}
}
}
}
destination
函数非常简单,这里唯一的“窍门”是将AnyView
用作返回类型。
private func destination (for conversation: Conversation) -> AnyView {
if conversation.mode == .personal {
return AnyView(ConversationDetail(conversation: conversation))
} else if conversation.mode == .groupChat {
return AnyView(ConversationDetailGroup(conversation: conversation))
} else {
return AnyView(ConversationDetailJoin(conversation: conversation))
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.