SwiftUI: How to present new views on clicking ActionSheet button?

问题

I have an action sheet consist of three actions

Action_1
Action_2
Cancel

If I tap on 'Action_1', My app should present ActionView_1(). If I tap on 'Action_2', My app should present ActionView_2().

I got this for presenting a view

.sheet(isPresented: $isAddSecretVisible){ActionView_1()}.

But this for presenting a view with a Button click.

I need the same action if tap on the Actionsheet button. Answer needs in SwiftUI

Thanks in advance.

回答1:

You should define 2 State, each for each a sheet:

@State var isMainActionPresented = false
@State var isActionViewPresented = false

And a State to determine witch actionSheet to present. So you can have an enum for that like:

enum ActionViewMode {
    case first
    case second
}

And a helper extension on that:

extension ActionViewMode {
    var view: some View {
        switch self {
            case .first: return ActionView1()
            case .second: return ActionView2()
        }
    }
}

Then on click of any Button or ActionSheet.Button, toggle the desired state. Look at the complete ContentView code below:

@State var actionViewMode = ActionViewMode.first

@State var isMainActionPresented = false
@State var isActionViewPresented = false

var body: some View {
    Button(action: {
        self.isMainActionPresented = true
    }) {
        Text("ActionSheet")
    }
    .actionSheet(isPresented: $isMainActionPresented) {
        ActionSheet(
            title: Text("Title"),
            message: Text("Message"),
            buttons: [
                .default(
                    Text("Action_1"),
                    action: {
                        self.actionViewMode = .first
                        self.isActionViewPresented = true
                }),
                .default(
                    Text("Action_2"),
                    action: {
                        self.actionViewMode = .second
                        self.isActionViewPresented = true
                }),
                .cancel()
        ])
    }
    .sheet(isPresented: $isActionViewPresented) {
        self.actionViewMode.view
    }
}

SwiftUI will handle the rest.

Note that you can't chain multiple sheets one after another, because each one overrides previous somehow.

回答2:

Reference link : SwiftUI

ActionSheet(title: Text("iOSDevCenters"), message: Text("SubTitle"), buttons: [
            .default(Text("Action_1"), action: {
                                print("Action_1")
                                ActionView_1()
                            }),
            .destructive(Text("Cancel"))
         ])
})

来源：https://stackoverflow.com/questions/58022002/swiftui-how-to-present-new-views-on-clicking-actionsheet-button

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