Flow layout / tag cloud / collection view in SwiftUI.

Last update: Dec 28, 2022

Related tags

Overview

SwiftUIFlowLayout

A Flow Layout is a container that orders its views sequentially, breaking into a new "line" according to the available width of the screen. You can compare it to a left-aligned block of text, where every word is a View. A common use for this layout is to create a tag cloud.

The end result looks like this:

The layout algorithm behaves differently if your FlowLayout is nested in a VStack or a scrollable parent, such as ScrollView or a List. Therefore, there's the Mode enum and mode property.

Recipe

Check out this recipe for in-depth description of the component and its code. Check out SwiftUIRecipes.com for more SwiftUI recipes!

Sample usage

struct FlowLayout_Previews: PreviewProvider {
  static var previews: some View {
    FlowLayoutView(mode: .scrollable,
                               binding: .constant(5),
                               items: ["Some long item here", "And then some longer one",
                                          "Short", "Items", "Here", "And", "A", "Few", "More", 
                                          "And then a very very very long one"]) {
      Text($0)
        .font(.system(size: 12))
        .foregroundColor(.black)
        .padding()
        .background(RoundedRectangle(cornerRadius: 4)
                               .border(Color.gray)
                               .foregroundColor(Color.gray))
    }.padding()
  }
}

Installation

This component is distrubuted as a Swift package.

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Comments

FlowLayout Error in iOS 13.7

then I used package of FlowLayout in my project and I run the app with iOS 13.7, the app crash. Could you please make changes for < iOS 14 Thank you

opened by AhmedAmineZribi 5
Button tag items trigger action click for all buttons instead of just the clicked one
What I have is something like this:

FlowLayout(mode: .scrollable, items: items, itemSpacing: 10) { item in Button(action: { print(item) }, label: { Text(item) } )

The problem is that when I tap on a button, it gets called once for each item in my list. Thus, in this example, clicking on one tag item will print all items in my list.
opened by andrei115 1