ios - SwiftUI 删除 View 上的空格

Question

在 SwiftUI View 中，我尝试显示一个简单的 TOP 蓝色条、一个红色矩形和一个下条，正如您从附图中看到的那样，顶部有一个奇怪的空白区域，顶部的红色矩形是我的想删除，但我不明白为什么会在那里。



这是简单的代码:

    var body: some View {

        GeometryReader { geometry in
            VStack {
                //upper top bar
                HStack{
                    Text("TOP BAR")

                }.frame(width: geometry.size.width, height: geometry.size.height/10)
                    .background(LinearGradient(gradient: Gradient(colors: [Color("BlueW"), Color("DARK")]), startPoint: .topLeading, endPoint: .bottomTrailing).shadow(radius: 2)).edgesIgnoringSafeArea(.all)

// <<<<<<<<<<<<<<<<<<< PROBLEM HERE <<<<<<<<<<<<<<<<<<
                // testing rectangle
                Rectangle().foregroundColor(.red)

                //lower bar
                ZStack {

                    HStack {
                        Image(systemName: "house")
                            .resizable()
                            .aspectRatio(contentMode: .fit)
                            .padding(20)
                            .frame(width: geometry.size.width/3, height: 75)
                            .foregroundColor(self.viewRouter.currentView == "home" ? .black : .gray)
                            .onTapGesture {
                                self.viewRouter.currentView = "home"
                        }
                        ZStack {
                            Circle()
                                .foregroundColor(Color.white)
                                .frame(width: 75, height: 75)
                            Button(action: {
                                self.isAddPresented = true
                            }) {
                                Image(systemName: "plus.circle.fill")
                                    .resizable()
                                    .aspectRatio(contentMode: .fit)
                                    .frame(width: 75, height: 75)
                                    .foregroundColor(.green)
                                    .rotationEffect(Angle(degrees: self.showPopUp ? 90 : 0))
                            }
                            .sheet(isPresented: self.$isAddPresented) {
                                AirportView(dm: self.dm, airport: self.general.airportData, dismissFlag: self.$isAddPresented)

                            }
                        }

                        .offset(y: -geometry.size.height/10/2)
                        .onTapGesture {
                            withAnimation {
                                self.showPopUp.toggle()
                            }

                        }
                        Image(systemName: "paperplane.fill")
                            .resizable()
                            .aspectRatio(contentMode: .fit)
                            .padding(20)
                            .frame(width: geometry.size.width/3, height: 75)
                            .foregroundColor(self.viewRouter.currentView == "routekit" ? .black : .gray)
                            .onTapGesture {
                                self.viewRouter.currentView = "routekit"
                        }

                    }.frame(width: geometry.size.width, height: geometry.size.height/10)
                        .background(LinearGradient(gradient: Gradient(colors: [Color("BlueW"), Color("DARK")]), startPoint: .topLeading, endPoint: .bottomTrailing).shadow(radius: 2))
                }
            }

        }.edgesIgnoringSafeArea(.bottom)
    }

Answer 1

问题出在HStack使其边缘忽略所有安全区域( .edgesIgnoringSafeArea(.all) )。



如您所见，如果您检查 View ，您的绿色 View ( HStack )实际上位于 GeometryReader 内。 ，但它的框架在外面。

解决方法:删除.edgesIgnoringSafeArea(.all) .

新问题但是，顶部安全区域会有一个空白区域。

解决方案:

套装GeometryReader至 .edgesIgnoringSafeArea([.top, .bottom])
瞧!