68 - Create a Picker in SwiftUI

A picker is a user interface control that allows your user to pick one choice from a list of options. In SwiftUI, you can easily create a picker using the Picker view.

Here’s an example of how to create a picker and customize its appearance:

struct ContentView: View {
  let options = ["Frida Kahlo", "Georgia O'Keeffe", "Mary Cassatt", "Lee Krasner", "Helen Frankenthaler"]
  @State private var selectedOption = 0

  var body: some View {
    VStack {
      HStack {
        Image(systemName: "paintpalette")
          .foregroundColor(.blue)
          .padding(.trailing, 4)

        Text("Favorite artist:")
          .font(.title)

        Text(options[selectedOption])
          .font(.title)
          .padding(.leading, 4)
      }
      .padding()

      Picker("Options", selection: $selectedOption) {
        ForEach(options.indices, id: \.self) { index in
          Text(options[index])
            .font(.headline)
        }
      }
      .pickerStyle(.wheel)
      .padding()
    }
  }
}

Your preview should look like this:

Use the wheel modifier with Picker to create a picker wheel.

Here’s what this code does:

• The ContentView struct is defined, which conforms to the View protocol.

• An array options is created, containing the names of different artists.

• The selected option is stored in a @State property called selectedOption, with an initial value of 0.

• The body property of the view is defined, which represents the view’s content.

• Inside the body, a VStack is created to vertically stack the views.

• Inside the VStack, an HStack is created to display the “Favorite artist” section.
  • An Image view with the system name paintpalette is added, adding the SF Symbol paint palette icon.
  • The image is styled with a blue color and given some padding.
  • A Text view with the string “Favorite artist:” is added, representing the label.
  • Another Text view is added to display the selected artist’s name.
  • The text views are styled with a large font size and padding.

• A Picker is added below the “Favorite artist” section to display the options.
  • The Picker displays a wheel-style interface for selecting options.
  • It uses a ForEach loop to iterate through the options array and create a Text view for each option.

• The Picker and “Favorite artist” section are given some padding for spacing.

Creating a picker in SwiftUI is easy and customizable. By using the Picker view and applying different pickerStyle modifiers, you can create a wide range of picker interfaces for your users to interact with.