SwiftUI 使う時参考「.actionSheet」「.alert」「.sheet」「.fullScreenCover」「.popover」

2020年12月20日

コード

ContentView.swift

import SwiftUI

struct ContentView: View {
    @State var onSheet = false
    @State var onFullScreenCover = false
    @State var onPopover = false
    @State var onAlert = false
    @State var onActionSheet = false

    var body: some View {
        VStack {
            Button(action: {
                self.onActionSheet = true
            }, label: {
                Text(".actionSheet")
            })
            .font(.largeTitle)
            .padding(8.0)
            .actionSheet(isPresented: self.$onActionSheet, content: {
                ActionSheet(title: Text("Action Sheet"), message: Text("Action Sheet Message"), buttons: [
                                .default(Text("Default"), action: {}),
                                .destructive(Text("Desturctive"), action: {}),
                                .cancel(Text("Cancel"), action: {})
                ])
            })
            Button(action: {
                self.onAlert = true
            }, label: {
                Text(".alert")
            })
            .font(.largeTitle)
            .padding(8.0)
            .alert(isPresented: self.$onAlert, content: {
                Alert(title: Text("Alert"), message: Text("Alert Message"), dismissButton: .none)
            })
            Button(action: {
                self.onSheet = true
            }, label: {
                Text(".sheet")
            })
            .font(.largeTitle)
            .padding(8.0)
            .sheet(isPresented: self.$onSheet, onDismiss: {}, content: {
                AdditionalView()
            })
            Button(action: {
                self.onFullScreenCover = true
            }, label: {
                Text(".fullScreenCover")
            })
            .font(.largeTitle)
            .padding(8.0)
            .fullScreenCover(isPresented: self.$onFullScreenCover, onDismiss: {}, content: {
                AdditionalView()
            })
            Button(action: {
                self.onPopover = true
            }, label: {
                Text(".popover")
            })
            .font(.largeTitle)
            .padding(8.0)
            .popover(isPresented: self.$onPopover, attachmentAnchor: .point(UnitPoint.center), arrowEdge: .top, content: {
                AdditionalView()
            })
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

AdditionalView.swift

import SwiftUI

struct AdditionalView: View {
    @Environment(\.presentationMode) var presentationMode

    var body: some View {
        GeometryReader() { geometry in
            ZStack {
                Rectangle()
                    .foregroundColor(.red)
                Button(action: {
                    self.presentationMode.wrappedValue.dismiss()
                }, label: {
                    Image(systemName: "xmark.circle")
                        .font(.custom("system", size: 96))
                })
            }
        }
    }
}

struct AdditionalView_Previews: PreviewProvider {
    static var previews: some View {
        AdditionalView()
    }
}