How can the current screen scale be determined?

In iOS, the scale property of the UIScreen object is used to determine the screen scale. It indicates how many physical pixels correspond to one logical point.

Example of obtaining the screen scale:

let screenScale = UIScreen.main.scale
print("Screen scale: \(screenScale)")

Values are usually 1.0 (standard display), 2.0 (Retina), or 3.0 (Retina HD). It is important to consider this when working with graphics and images to ensure clear display on different devices.