显示大型 PDF 文档 iPhone
经过几个小时的谷歌搜索后，我想看看是否有人知道答案。
我有一个很大的 PDF 文件（30mb），我使用 UIWebView 来显示它，但是在尝试滚动页面时速度非常慢，并且当您旋转 iPhone/iPad 时，它无法在屏幕上正确绘制，直到您滚动为止几页。
所以我一直在研究使用 CGPDFDocumentRef 来显示 PDF。在我进一步讨论之前，有没有一种更简单的方法可以做到这一点，或者有任何示例/开源解决方案可以在我花很长时间尝试复制 UIWebView 或类似的东西来显示大型 PDF 之前做到这一点。
我想其他人也遇到过这个问题吗？
非常感谢您的帮助
After many hours of googling I thought I would see if anyone knew the answer.
I have a large PDF file (30mb) which I was using the UIWebView to display but it is painfully slow when trying to scroll through pages and when you rotate the iPhone/iPad it doesn't draw properly on the screen till you have scrolled through a few pages.
So I have been looking into using the CGPDFDocumentRef to display the PDF. Before I go any further is there an easier way to do this, or any examples/open source solutions to do this before I spend a long time trying to replicate the UIWebView or something similar to display a large PDF.
I assume someone else has had this problem?
Many thanks for any help
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我已经建造其中一个有一段时间了。我告诉你，这两种方法都有困难。 CGPDFDocumentRef 路径是我所采用的路径，并且效果非常好。
这里是一个很好的起点，以 Apple 为例， ZoomingPDFViewer< /a>.您将很好地了解 CGPDF* 的工作原理。如果您想快速组合一些东西，您可能需要从这个人的示例开始。事实上，作者网站提供了大量资源，供您在遇到问题时使用。
I've been building one of these for a while now. I'll tell you, both approaches have difficulties. The CGPDFDocumentRef path is the one that I've taken, and it's worked out pretty well.
A good place to start is here, with Apple's example, ZoomingPDFViewer. You'll get a good idea of how that CGPDF* stuff works. If you're looking to put something together in a hurry, you might want to start with this guy's example. In fact, the author's website has a huge list of resources to use when you run into problems.