Question 67096 in IOS Swift Question posted in
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iOS SwiftUI – Cannot pass function of type '() async -> Void' to parameter expecting synchronous function type

TextField("search", text: $searchText)
    .accentColor(Color("ClickableLink"))
    .foregroundColor(.white)
    .focused($focusedField, equals: .field)
    .onAppear {
        self.focusedField = .field
    }
    .onSubmit {
        loadinglayout = true

        do {
            try await getMemes()
        }
        catch {
            print(error)
        }
    }

I get

"Cannot pass function of type ‘() async -> Void’ to parameter expecting synchronous function type"

inside onSubmit.

So far the

do

method solved this kind of issues, why not here? I have absolutely no idea what else I could try

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2

Answers


  1. 0

    The problem is that you are trying to call an async method from a synchronous method. onSubmit is synchronous, while getMemes is async.

    You need to wrap async methods in a Task if you want to call them from a synchronous context.

    .onSubmit {
    loadinglayout = true
    Task {
        do {
            try await getMemes()
        }
        catch {
            print(error)
        }
    }
}
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  2. 0

    If you are calling async function inside button

    Button {
         Task{
               await fetchData()
             }
       } label: {
               Text("Refresh Time")
       }

    it will wait for function to return data.

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