How to take a screenshot in my app iOS swift

Solution:

func snapshot(of rect: CGRect? = nil) -> UIImage? {

// snapshot entire view

UIGraphicsBeginImageContextWithOptions(bounds.size, isOpaque, 0)

drawHierarchy(in: bounds, afterScreenUpdates: true)

let wholeImage = UIGraphicsGetImageFromCurrentImageContext()

UIGraphicsEndImageContext()

// if no `rect` provided, return image of whole view

guard let image = wholeImage, let rect = rect else { return wholeImage }

// otherwise, grab specified `rect` of image

let scale = image.scale

let scaledRect = CGRect(x: rect.origin.x * scale, y: rect.origin.y * scale, width: rect.size.width * scale, height: rect.size.height * scale)

guard let cgImage = image.cgImage?.cropping(to: scaledRect) else { return nil }

return UIImage(cgImage: cgImage, scale: scale, orientation: .up)

}

The above function will be most usefull for taking screenshot inside the app.

iOS