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Re: iOS Rendering PDFs on a Background Thread
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Re: iOS Rendering PDFs on a Background Thread


  • Subject: Re: iOS Rendering PDFs on a Background Thread
  • From: Dave <email@hidden>
  • Date: Thu, 26 Jul 2012 22:55:03 +0100

Hi,

Thanks for that!

All the Best
Dave


On 26 Jul 2012, at 22:20, Evadne Wu wrote:

Probably not: http://stackoverflow.com/questions/10931155/ uigraphicsbeginimagecontextwithoptions-and-multithreading
Best,
Eve

On Jul 27, 2012, at 5:09 AM, Dave <email@hidden> wrote:

Hi All,

I like to be able to fire off a Background thread that Renders PDF pages to UIImage's.
I've got the code working on the Main Thread, but now the tricky
bit because since I am using
UIGraphicsBeginImageContextWithOptions and
UIGraphicsEndImageContext in order to capture the Image, and, as
far as I know these methods can only be called on the Main Thread.
Is this correct?
I can re-code this using CF/CG etc. but I'd like to know if:

1.  The CF/CG functions are thread safe.

2.  The CGPDF functions are also thread safe.

Any help appreciated.

All the Best
Dave

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References: 
 >iOS Rendering PDFs on a Background Thread (From: Dave <email@hidden>)

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