You can use a ready-made custom alert controller.
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Updated
Mar 31, 2021 - Swift
You can use a ready-made custom alert controller.
A fully customizable photo viewer ViewController to display single photo or collection of photos, inspired by Facebook photo viewer.
An iOS/tvOS photo gallery viewer, useful for viewing a large (or small!) number of photos.
Add a description, image, and links to the photoviewer topic page so that developers can more easily learn about it.
To associate your repository with the photoviewer topic, visit your repo's landing page and select "manage topics."