What is the best way to view large PDFs on iOS?

问题:

I am currently using QLPreviewController to view PDFs (250MB+) However it cannot deal with real large files. Either I get the info that not the whole file has been loaded or the whole app just dies. I also need to customize the view which is nit possible using QLPreviewController. What should I do? Use UIWebView instead? Or will I have to use CGContextDrawPDFPage? Using the latter, how will I get zooming implemented?

回答1:

I would go with your suggestion of using a UIWebView. Doing so will automatically give you zoom support and the UIWebView should handle loading extremely large PDF's.

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If you have decided to go with Quartz, this link looks very promising for zoom support.