how do I build a table view controller

Asked on 2024-07-30

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To build a table view controller in SwiftUI, you can use the List view, which is a powerful and flexible way to create table-like interfaces. Here are some key points and examples from the WWDC sessions that can help you get started:

  1. Using List and ForEach:

    • In the session Demystify SwiftUI containers, it is explained how to use ForEach within a List to create data-driven lists. This allows you to dynamically generate rows based on your data.
    struct ContentView: View {
        let items = ["Item 1", "Item 2", "Item 3"]
    
        var body: some View {
            List {
                ForEach(items, id: \.self) { item in
                    Text(item)
                }
            }
        }
    }
    
  2. Combining Static and Dynamic Content:

    • The same session also demonstrates how to combine static and dynamic content within a single list, which can be useful for creating headers or sections within your table view.
    struct ContentView: View {
        let items = ["Item 1", "Item 2", "Item 3"]
    
        var body: some View {
            List {
                Text("Header")
                ForEach(items, id: \.self) { item in
                    Text(item)
                }
            }
        }
    }
    
  3. Customizing Rows:

    • You can customize the appearance of each row by using custom views. This is shown in the session Demystify SwiftUI containers, where custom views are used within a ForEach.
    struct CustomRow: View {
        let item: String
    
        var body: some View {
            HStack {
                Text(item)
                Spacer()
                Image(systemName: "star")
            }
            .padding()
        }
    }
    
    struct ContentView: View {
        let items = ["Item 1", "Item 2", "Item 3"]
    
        var body: some View {
            List {
                ForEach(items, id: \.self) { item in
                    CustomRow(item: item)
                }
            }
        }
    }
    
  4. Advanced Customization and Control:

    • For more advanced customization, such as creating unique experiences or using low-level APIs, you can refer to the session SwiftUI essentials. This session covers how to build custom control styles and use advanced features like canvas for high-performance drawing.
    struct CustomControl: View {
        var body: some View {
            // Custom control implementation
        }
    }
    
    struct ContentView: View {
        var body: some View {
            List {
                CustomControl()
                // Other rows
            }
        }
    }
    

By leveraging these techniques, you can build a flexible and powerful table view controller in SwiftUI. For more detailed information, you can explore the sessions mentioned above.