App for iOS
Dec
19
2019

Apple launched the much-awaited iOS 13 updates globally on September 19. One of the biggest features of this update was the system-wide iOS 13 dark mode. While this feature is a joy to the users using Apple devices, it’s a task for iOS developers to prepare an app ready for iOS 13 dark mode.

Dark Mode introduces a dramatic new look for iPhone. It’s thoughtfully designed to make every element on the screen easier on your eyes and is seamlessly integrated throughout the system. And it’s simple to turn on from Control Center or set to automatically turn on at night.

here is useful info and steps showing how they can prep up an existing iOS app for iOS 13 dark mode.

  • It’s not too hard to implement iOS 13 dark mode despite its system-wide scale.
  • Enabling iOS 13 dark mode on your existing app is also simple mostly thanks to the latest iOS 13 SDK.

1. Let’s start with changing system colors iOS 13 dark mode:

There are new system colors added in UIColor, one of which is a label color.

  • label.color = UIColor.secondaryLabel

2. Adapt Images For iOS 13 Dark Mode:

Most images look great in iOS 13 dark mode. However, you may still end up finding some images which look a unsuitable for dark mode.

Now you can adjust images for dark mode in the same way as text is adjusted.

3. Programmatically Changes in iOS 13 Dark Mode
Developer can made changes in appearance programmatically in iOS 13 dark mode. Here is an example



override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) 
{
    super.traitCollectionDidChange(previousTraitCollection)
    let userInterfaceStyle = traitCollection.userInterfaceStyle // .unspecified, .light, or .dark
}

4 .Overriding the User Interface Style.

  • All Screen

If you need extra time to work on your app’s Dark Mode support or want to keep your app in a single style, you can opt-out by including the UIUserInterfaceStyle key (value = Light or Dark) in your app’s Info.plist file.

  • Specific Screen

In iOS 13, you can now override the user interface style on specific views or view controllers. For example, you may want only a certain view controller to be in iOS 13 dark mode, while the rest of your app is in light mode.


// Inside a UIViewController
override func viewDidLoad() 
{
    super.viewDidLoad()
    overrideUserInterfaceStyle = .dark // .light
}

iOS 13 dark mode brings with it a unique stress-free way to use a smartphone. Perhaps we’ll see a future where dark mode replaces the default mode with the whiter backgrounds.