Creating a new UIImagePickerController instance

To make it easy for a user to use the camera or photo library, Apple implemented the UIImagePickerController class. This class manages the system interfaces for taking photos and choosing items from the user’s photo library. An instance of this class is called an image picker controller, and it can display an image picker on the screen.

If you have ever added a photo to a social media post, you will have seen what the image picker looks like. It typically displays either the view from your camera or a grid of photos from your photo library, and you can then choose a photo to be added to your post:

Figure 20.1: Simulator showing the image picker

To learn more about the UIImagePickerController class, see https://developer.apple.com/documentation/uikit/uiimagepickercontroller.

To display the image picker on the Add New Journal Entry screen, you’ll add a tap gesture recognizer instance to the...