Forgot to mention, I also tested passing an image created using UIImage(named:)
to UIImageJPEGRepresentation, and it worked just fine on my real device.
I opened rdar://32829011 , there is a test case in it, if
you're interested.
> On 18 Jun 2017, at 5:45 PM, Glen Huang wrote:
>
> Thanks for
Thanks for the reply.
I'm sorry but I'm not familiar with the "usual debugging things" that can be
apply to UIImage. Is there any official document introducing the inner workings
of UIImage that I can read?
But following your advice, I did go check image.cgImage before passing it to
UIImageJPE
> On Jun 16, 2017, at 7:31 AM, Glen Huang wrote:
>
> Hi,
>
> I'm trying to extract the JPEG data from a PHAsset. I did it like this:
>
>let fetchOptions = PHFetchOptions()
>fetchOptions.sortDescriptors = [NSSortDescriptor(key:
> "creationDate", ascending: true)]
>
