Swift UI: array of strings to array of AnyView with Text View

Question

I have an array of strings and I want to convert to array of AnyView which has Text(step). I get the error:

Type '()' cannot conform to 'View'; only struct/enum/class types can conform to protocols

What am I doing wrong?

func generateViews() -> [AnyView]{
    var views: [AnyView] = []
    ForEach(data.steps, id: \.self) { step in
        views.append(AnyView(Text(step)))
    }
    return views
}

udbhateja · Accepted Answer · 2021-04-05 05:37:26Z

2

You are probably mistaking ForEach with forEach. Try replacing the code to:

func generateViews() -> [AnyView] {
  var views: [AnyView] = []

  data.forEach({
      views.append(AnyView(Text($0.step)))
  })
  return views
}

answered Apr 5, 2021 at 5:37

udbhateja

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3 Comments

H.T Over a year ago

This works! What's the difference though? why this works and the other does not?

udbhateja Over a year ago

The diff. is in ForEach you are using. ForEach creates and returns a View whereas forEach is a simple loop that iterates over the collection. In your implementation, you were simply appending to the array whereas ForEach accepts you to return a View.

Shadowrun Over a year ago

Maybe it helps to think of SwiftUI’s ForEach only as a kind of hack to get around the issue that a real for loop isn’t allowed in function builders. Maybe that will change in a future release

swiftPunk · Accepted Answer · 2021-04-05 06:11:00Z

1

I think you do not need AnyView, you need just view:

func generateViews() -> some View {

    return ForEach(data.steps, id: \.self) { Text($0.description) }

}

I just add AnyView way as well in case:

func generateViews() -> [AnyView] {

     return data.steps.map({ AnyView(Text($0.description)) })

}

edited Apr 5, 2021 at 6:11

answered Apr 5, 2021 at 5:38

swiftPunk

1

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