ForEach

Part of the Introduction to SwiftUI section of Coddy's Swift journey. Lesson 29 of 50.

ForEach creates one view for each element of a collection:

let fruits = ["Apple", "Banana", "Cherry"]

var body: some View {
    VStack {
        ForEach(fruits, id: \.self) { fruit in
            Text(fruit)
        }
    }
}

The closure receives each element and returns its view. SwiftUI needs a way to tell the rows apart, so it asks for an id. id: \.self uses the value itself, which works when every element is different.

A range of numbers works too, with no id:

ForEach(1..<4) { number in
    Text("Row \(number)")
}

This shows Row 1, Row 2 and Row 3: 1..<4 stops before 4.

Challenge

Easy

Show the menu: inside the VStack, use ForEach to make one Text for each drink in drinks, in order.

Try it yourself

import SwiftUI

@main
struct CoddyApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Introduction to SwiftUI

1Introduction

What Is SwiftUI The App File

4Modifiers

Padding Backgrounds Modifier Order Frames And Shapes Recap - Badge Maker

7Lists

ForEachIdentifiable Items List Adding Items Recap - Shopping List

10Project - Coddy Coffee

Project Overview Drink Screens

Choose A Size

Quantity And Total

Place The Order

2Showing Content

Text Views Numbers In Text Fonts Colors SF Symbols Recap - Price Tag

5State & Buttons

Buttons The @State Property True Or False State Conditional Views Recap - Score Keeper

8Navigation

NavigationStack NavigationLink Passing Data Sheets And Alerts Recap - Plant Guide

11Final Challenges

Tip Calculator To-Do List True Or False Game

3Stacks & Layout

VStack HStack Alignment And Spacing Spacer And ZStack Recap - Weather Card

6User Input

TextField Toggle Stepper And Slider Picker Recap - Order Form

9Sharing Data

The @Binding Property Observable Objects Environment Objects Recap - Step Counter

Practice on your own: Swift playground