Today I will show you how to adjust the order of elements in the List. (demo with NavigationView).

import SwiftUI

struct ContentView: View {
    
    /// 1. Use an array as the data source for the List.
    @State var colors = ["Red", "Green", "Blue"]
    
    var body: some View {
        
        /// 2. Add a NavigationView. The function of NavigationView is similar to that of UINavigationController, which is mostly used to switch between views.
        NavigationView {
            
            /// 3. create a List
            List {
                
                /// 4. Add a forEach method to iterate over the array.
                ForEach(colors, id: \.self) { color in
                    
                    /// 5. Use Text to show the elements.
                    Text(color)
                }
                
                /** 6.
                 Add an `onMove` method so that the elements of the List can be moved.
                 This method has two parameters:
                 - source: The original position's index.
                 - destination: The destination position's index.
                 */
                .onMove { source, destination in
                    /// 7. When the elements in the List are moved, the elements in the array also need to be moved to keep the interface and data from changing simultaneously.
                    self.colors.move(fromOffsets: source, toOffset: destination)
                }
            }
            
            /// 8. Set the title text of the navigation bar
            .navigationTitle(Text("Edit"))
            .navigationBarTitleDisplayMode(.large)
            
            /// 9. add an edit button
            .toolbar { EditButton() }
        }
    }
}

Follow me on:

(Foks) Hui Wang's LinkedIn