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POiOS 4.3 PDF file rendering issue
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2012-03-31T07:20:00.117
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2012-12-25T12:05:37.940
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2012-08-18T04:00:39.973
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Body
I use the following code to draw and rotate a PDF file. It works perfectly fine with <a href="http://en.wikipedia.org/wiki/IOS_%28Apple%29" rel="nofollow">iOS</a> 5.x, but under iOS 4.3 just a white page shows up with an error in the debugger: <blockquote> invalid `Contents': not an array of streams. </blockquote> The error takes place right after "CGContextDrawPDFPage(context, pdfPage);" Why does it work with iOS 5.x but does not 4.3.x? I tried different PDF files, but still I got the same result. How do I overcome this issue? pdfpage is defined as: <pre><code>- (void)setPage:(CGPDFPageRef)newPage { CGPDFPageRelease(self->pdfPage); self->pdfPage = CGPDFPageRetain(newPage); } </code></pre> the method where it happens: <pre><code> -(void)drawLayer:(CALayer*)layer inContext:(CGContextRef)context { // First fill the background with white. CGContextSetRGBFillColor(context, 1.0,1.0,1.0,1.0); CGContextFillRect(context,self.bounds); CGContextSaveGState(context); int rotate = CGPDFPageGetRotationAngle(pdfPage); switch (rotate) { case 0: CGContextTranslateCTM(context, 0.0, self.bounds.size.height); CGContextScaleCTM(context, 1, -1); break; case 90: CGContextScaleCTM(context, 1.0, -1.0); CGContextRotateCTM(context, -M_PI / 2); break; case 180: case -180: CGContextScaleCTM(context, 1, -1); CGContextTranslateCTM(context, self.bounds.size.width, 0); CGContextRotateCTM(context, M_PI); break; case 270: case -90: CGContextTranslateCTM(context, self.bounds.size.height, self.bounds.size.width); CGContextRotateCTM(context, M_PI / 2); CGContextScaleCTM(context, -1, 1); break; } CGContextSetInterpolationQuality(context, kCGInterpolationHigh); CGContextSetRenderingIntent(context, kCGRenderingIntentDefault); CGContextScaleCTM(context, myScale,myScale); CGContextDrawPDFPage(context, pdfPage); // the error shows up right after executing this line CGContextRestoreGState(context); } </code></pre>
Tags
<objective-c><ios><pdf><ios4>
Title
iOS 4.3 PDF file rendering issue
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PostAcceptedAnswerId
1. PO
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1. PTQuestion
UserLastEditorUserId
1. USKurt Pfeifle
UserOwnerUserId
1. USHashmat Khalil
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