An empty snapshotView on iPhone 7/7plus

Question

My first question here:) Recently I update my Xcode to 8, and the resizableSnapshotView method doesn\'t work properly on some simulators. The snapshotView works we

Answer 1

Works in:

• Version 8.1 (8B62)
• Simulator Version 10.0 (SimulatorApp-700.14

Swift 3

import Foundation
import UIKit

extension UIView {
    func snapshotView() -> UIView? {
        guard let image = snapshotImage() else { return nil }
        return UIImageView(image: image)
    }

    func snapshotImage() -> UIImage? {
        UIGraphicsBeginImageContextWithOptions(bounds.size, isOpaque, contentScaleFactor)
        defer { UIGraphicsEndImageContext() }

        drawHierarchy(in: bounds, afterScreenUpdates: false)

        return UIGraphicsGetImageFromCurrentImageContext()
    }
}

Answer 2

Use the following UIView extension to create a snapshot using CoreGraphics.

I can confirm this works on iPhone 7 simulator.

public extension UIView {

    public func snapshotImage() -> UIImage? {
        UIGraphicsBeginImageContextWithOptions(bounds.size, isOpaque, 0)
        drawHierarchy(in: bounds, afterScreenUpdates: false)
        let snapshotImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return snapshotImage
    }

    public func snapshotView() -> UIView? {
        if let snapshotImage = snapshotImage() {
            return UIImageView(image: snapshotImage)
        } else {
            return nil
        }
    }
}