CODEWITHSUNDEEP
swiftexc-bad-accessuigraphicsrenderer
Hilal
Hilal

Reputation: 33

Crash on creating an image from UIGraphicsImageRenderer

i'm getting a Thread 1: EXC_BAD_ACCESS (code=EXC_I386_GPFLT) when layer.render(in: context) is called where i'm trying to create a snapshot image from a custom window

let renderer = UIGraphicsImageRenderer(bounds: bounds, format: .init(for: traitCollection))
        return renderer.image { action in
            let context = action.cgContext
            layer.render(in: context)
        }

Upvotes: 2

Views: 1197

Answers (1)

Jayesh Patel
Jayesh Patel

Reputation: 1104

Use can use bellow extension to get it

private var rendererKey: UInt8 = 0
extension UIView {
    var renderer: UIGraphicsImageRenderer! {
         get {
             guard let rendererInstance = objc_getAssociatedObject(self, &rendererKey) as? UIGraphicsImageRenderer else {
                self.renderer = UIGraphicsImageRenderer(bounds: bounds)
                return self.renderer
             }
             return rendererInstance
        }
        set(newValue) {
            objc_setAssociatedObject(self, &rendererKey, newValue, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN)
        }
    }
    func snapImageView() -> UIImageView {
        let img:UIImage = renderer.image { ctx in
         DispatchQueue.main.async { 
              layer.render(in: ctx.cgContext)
          }
        }
        let imageView:UIImageView = UIImageView(image: img)
        imageView.frame = renderer.format.bounds
        imageView.clipsToBounds = true
        return imageView
    }
}
// Generate image and image view of any view instance
let anImageView = yourView.snapImageView()

Upvotes: 0

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