Re: Image preview with UIWebView
Re: Image preview with UIWebView
- Subject: Re: Image preview with UIWebView
- From: Ken Ferry <email@hidden>
- Date: Thu, 27 Jan 2011 08:58:28 -0800
Hi Leon, Kyle,
I have been told that ImageIO on iOS does not have RAW decoders. (Kyle knows that it does on the desktop.) It's still possible to display something when the file has an embedded JPEG thumb, which most RAW files do. I'm not sure what the mechanism is, but ImageIO on the desktop does have an explicit way to ask for a thumb image. Perhaps try that.
-Ken
Cocoa Frameworks, but not on iOS
On Jan 25, 2011, at 10:46 PM, Kyle Sluder <email@hidden> wrote:
> On Tue, Jan 25, 2011 at 10:05 PM, Leon Qiao <email@hidden> wrote:
>> I plan to use the UIWebView to display the preview of some image files.
>> It works well when opening the common files. But it seems some special
>> formats (such as "CRW", Canon Camera Raw file) are not supported. It can be
>> viewed via the QLPreviewController. Is there any better way to do the file
>> preview function?
>
> Sounds like you're not going to be able to use a UIWebView for your preview.
>
> ImageIO can read Canon RAW images. Create a CGImageSource with the
> file's URL and you'll be able to get a CGImage out of it. You can then
> wrap it in a UIImageView and display it in a preview UI, or otherwise
> use it as you would any other CGImage.
>
> --Kyle Sluder
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