whoami9426
V2EX  ›  Swift

请教 SwiftUI 布局的问题

  •  
  •   whoami9426 · Jul 27, 2024 · 5283 views
    This topic created in 662 days ago, the information mentioned may be changed or developed.

    想要实现一个上下分页滑动,左右分页滑动的交互效果

     var body: some View{
      ScrollView(showsIndicators: false){
                LazyVStack(spacing:0){
                    ForEach(1...10, id: \.self){ index in
                        ScrollView(.horizontal,showsIndicators: false){
                            LazyHStack(spacing:0){
                                
                                VStack {
                                    Text("Left View \(index)")
                                        .font(.system(.largeTitle))
                                        .foregroundStyle(.white)
                                }
                                .frame(maxWidth: .infinity, maxHeight: .infinity)
                                .background(Color.black)
                                .containerRelativeFrame([.horizontal,.vertical])
                               
                                
                                VStack {
                                    Text("Right View \(index)")
                                        .font(.system(.largeTitle))
                                        .foregroundStyle(.white)
                                }
                                .frame(maxWidth: .infinity, maxHeight: .infinity)
                                .background(Color.blue)
                                .containerRelativeFrame([.horizontal,.vertical])
                                
                            }.scrollTargetLayout()
                        }
                        .ignoresSafeArea()
                        .containerRelativeFrame([.horizontal,.vertical])
                        .scrollTargetBehavior(.paging)
                        .onAppear(perform: {
                            UIScrollView.appearance().bounces = false
                            UIScrollView.appearance().alwaysBounceVertical = false
                            UIScrollView.appearance().alwaysBounceHorizontal = false
                        })
                    }
                }.scrollTargetLayout()
            }
            .ignoresSafeArea()
            .containerRelativeFrame([.horizontal,.vertical])
            .scrollTargetBehavior(.paging)
    }
    

    目前用这种方式实现,但是有个问题,滑动到 RightView 可以上下滑动到下一层,有什么办法在滑动到 RightView 时只允许左滑回 Left View

    2 replies    2024-07-27 22:53:34 +08:00
    kemchenj
        2
    kemchenj  
       Jul 27, 2024
    最外层的 ScrollView 可以用 scrollDisabled(:_) 去控制是否禁用滚动手势,在内层的 ScrollView 用 GeometryReader 之类的监控一下 offset ,判断是否需要禁用滚动手势
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