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# iOS Developers Start Here

Not sure where to get started? Try some of these popular topics or browse the latest articles.

## Popular Articles

- ### WWDC 2025 Viewing Guide

My WWDC 2025 viewing guide to help you plan the sessions you want to watch.
- ### iPhone 16 Screen Sizes

What's new with the 2024 iPhone 16 screen sizes.
- ### Xcode 13 Missing Info.plist

What happened to the Info.plist file in Xcode 13?
- ### Button Configuration in iOS 15

Apple gave buttons a big upgrade in iOS 15.
- ### Adding Padding To A Stack View

How do you add internal padding to a stack view?
- ### Git Cheat Sheet

The Git commands I use most often.

## SwiftUI

- ### SwiftUI View That Fits

SwiftUI ViewThatFits makes it easier to build adaptive layouts.
- ### Dismissing SwiftUI Views

SwiftUI has a less clumsy mechanism for dismissing presented views in iOS 15.
- ### SwiftUI Split View Configuration

How to configure the column visibility, width and style of a SwiftUI NavigationSplitView.
- ### SwiftUI Custom Environment Values

A quick guide to creating your own custom SwiftUI environment values.
- ### SwiftUI Scrollable View Backgrounds

How do you set the background color of a SwiftUI scrollable view like lists and forms?
- ### SwiftUI gradients and shadow styles

Add color gradients and drop shadows to your SwiftUI views.

## Swift

- ### Getting Started with Swift Regex

Swift 5.7 brings a whole new way of working with regular expressions.
- ### Swift String Cheat Sheet

The many ways to create and use Swift Strings.
- ### Swift If Case Let

The Swift If-Case-Let syntax always seems backwards to me. Here's a reminder how you use it.
- ### Swift Guide to Map Filter Reduce

Using a for loop to work with collections? Take a few minutes to learn about Swift map, filter and reduce operations.
- ### Swift Lazy Property Initialization

Are you wondering about lazy properties in Swift? Let's look at how and when should you use them.
- ### Swift Foundation Formatter Improvements

Apple added a much easier way to work with date, number and other data formatters in iOS 15 and macOS 12.

## Swift Package Manager

- ### Creating Swift Packages in Xcode

Here's my quick guide to creating Swift packages with Xcode.
- ### Editing A Swift Package

How to edit a Swift package in an Xcode project that depends on the package.
- ### Add resources to Swift packages

Starting with Xcode 12, you can add more than just source code to your Swift packages.
- ### Using Swift Packages in Playgrounds

Xcode playgrounds can import and use Swift packages. It's not the solution I was hoping for but it's a step in the right direction.

## Xcode

- ### Xcode 13 Missing Info.plist

What happened to the Info.plist file in Xcode 13?
- ### Xcode Keyboard Shortcuts

My favourite Xcode keyboard shortcuts to supercharge your Xcode experience.
- ### Xcode DocC - Getting Started

Want to document your code? Get started with the DocC documentation system.
- ### Inspecting HTTP Traffic With Instruments

Xcode 13 added a useful network instrument to record and analyze URL sessions and HTTP traffic.
- ### Xcode 14 Single Size App Icon

Xcode 14 can finally automatically generate all of the app icon sizes for you.
- ### What's New in Xcode 14 Previews

A tour of the new SwiftUI preview canvas in Xcode 14.

## Auto Layout

- ### iPhone 16 Screen Sizes

What's new with the 2024 iPhone 16 screen sizes.
- ### iPad 2024 Screen Sizes

Here's a recap of what you need to know when updating your apps for the 2024 iPad devices.
- ### Registering For Trait Changes

Apple deprecated traitCollectionDidChange in iOS 17, replacing it with a method to register for specific trait changes.
- ### UIKit View Lifecycle - viewIsAppearing

The view controller lifecycle has a new callback in iOS 17 that's back-deployable to iOS 13. Here's a quick guide to viewIsAppearing.
- ### iPhone 15 Screen Sizes

Here's a recap of what's new with the 2023 iPhone 15 screen sizes.
- ### Aspect Fit Layout Guide

The safe area aspect fit layout guide is new in iOS 16.

## Dynamic Type

- ### SwiftUI Adaptive Stack Views

How do you adapt your SwiftUI layouts for varying dynamic type size and available horizontal space?
- ### Restricting Dynamic Type Sizes

Since iOS 15 you can set limits on the minimum and maximum sizes of dynamic type.
- ### The @ScaledMetric Property Wrapper

How can you scale other metrics, like spacing, as the dynamic type content size changes? In iOS 14, SwiftUI gained the @ScaledMetric property wrapper that can scale any numeric value.
- ### Scaling Custom SwiftUI Fonts With Dynamic Type

How do you use a custom font with SwiftUI that scales like dynamic type.

## Accessibility

- ### Use High Contrast For Legibility

What makes text hard to read?
- ### Accessibility Smart Invert

What's the one accessibility feature, other than VoiceOver, you wish more developers knew about?
- ### VoiceOver For Frequently Updating Data

How do you make views that update frequently accessibile?
- ### Restricting Dynamic Type Sizes

Since iOS 15 you can set limits on the minimum and maximum sizes of dynamic type.

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