how to use SwiftUI with UIList

Asked on 2024-07-30

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To use SwiftUI with UIList, you can leverage the List view in SwiftUI, which is a powerful and flexible way to display a collection of data. Here are some key points and examples from the WWDC sessions:

  1. Basic List Initialization:

    • You can initialize a List with a collection of data. This is similar to using a ForEach view, which generates views for each element in a collection and provides those to its container.
    • Example from SwiftUI essentials:
      List(pets) { pet in
          Text(pet.name)
      }
      
  2. Customizing List Rows:

    • Lists can be customized through the use of view modifiers. For example, you can add swipe actions to each row.
    • Example from SwiftUI essentials:
      List(pets) { pet in
          Text(pet.name)
              .swipeActions {
                  Button("Award") {
                      // Action for awarding the pet
                  }
              }
      }
      
  3. Using ForEach within a List:

    • You can also create a list by manually writing out a set of views or by using a ForEach view within the list.
    • Example from Demystify SwiftUI containers:
      List {
          ForEach(songIdeas) { song in
              Text(song.title)
          }
      }
      
  4. Searchable Lists:

    • To make a list searchable, you can use the searchable modifier.
    • Example from Migrate your TVML app to SwiftUI:
      @State private var searchTerm = ""
      
      var filteredPets: [Pet] {
          if searchTerm.isEmpty {
              return pets
          } else {
              return pets.filter { $0.name.contains(searchTerm) }
          }
      }
      
      var body: some View {
          List(filteredPets) { pet in
              Text(pet.name)
          }
          .searchable(text: $searchTerm)
      }
      

These examples illustrate how you can use SwiftUI's List view to create and customize lists, making it a powerful tool for building dynamic and interactive user interfaces. For more detailed information, you can refer to the sessions mentioned: