iPhoneSDK中的HTML到PDF转换 [英] HTML to PDF conversion in iPhoneSDK

问题描述

我想将一些html页面转换为PDF格式。是否可以使用iPhone SDK？

I want to convert some html page into PDF format.Is it possible using iPhone SDK?

是否有可用的API或第三方库？我已经搜索了解决方案，但无法找到任何实质性的材料。

Are there any APIs or 3rd party libraries available to so? I have googled around for the solution but was not able to find any substantial material.

干杯

推荐答案

我根据我发现的每一个好建议创建了一个课程。我一直在挖掘很多东西，我希望我的课程能为那些试图直接从某些HTML源代码创建多页PDF的人提供一个良好的开端。

I created a class based on every good advice I found around. I've been digging a lot and I hope my class will offer some good start for anyone trying to create multi-page PDF directly out of some HTML source.

你'我会在这里找到一些基本的示例代码： https://github.com/iclems/iOS-htmltopdf

You'll find the whole code here with some basic sample code : https://github.com/iclems/iOS-htmltopdf

我遇到了与您相同的问题，我的要求是：
- 完整PDF（真实文本，无位图）
- 智能多页（与每X像素切割一个全高webview相比......）

I had just the same issue as you and my requirements were: - full PDF (real text, no bitmap) - smart multi-pages (compared to cutting a full height webview every X pixels...)

因此，我使用的解决方案非常好，因为它采用相同的方法iOS用于分割打印页面的工具。

Thus, the solution I use is pretty nice as it resorts to the same tools iOS uses to split pages for print.

让我解释一下，我根据网页视图打印格式化程序设置了一个UIPrintPageRenderer（第一个提示）：

Let me explain, I setup a UIPrintPageRenderer based on the web view print formatter (first tip) :

UIPrintPageRenderer *render = [[UIPrintPageRenderer alloc] init];

[render addPrintFormatter:webView.viewPrintFormatter startingAtPageAtIndex:0];

CGRect printableRect = CGRectMake(self.pageMargins.left,
                              self.pageMargins.top,
                              self.pageSize.width - self.pageMargins.left - self.pageMargins.right,
                              self.pageSize.height - self.pageMargins.top - self.pageMargins.bottom);

CGRect paperRect = CGRectMake(0, 0, self.pageSize.width, self.pageSize.height);

[render setValue:[NSValue valueWithCGRect:paperRect] forKey:@"paperRect"];
[render setValue:[NSValue valueWithCGRect:printableRect] forKey:@"printableRect"];

NSData *pdfData = [render printToPDF];

[pdfData writeToFile: self.PDFpath  atomically: YES];

与此同时，我在UIPrintPageRenderer上创建了一个类别来支持：

In the meantime, I have created a category on UIPrintPageRenderer to support:

-(NSData*) printToPDF
{

NSMutableData *pdfData = [NSMutableData data];

UIGraphicsBeginPDFContextToData( pdfData, CGRectZero, nil );

[self prepareForDrawingPages: NSMakeRange(0, self.numberOfPages)];

CGRect bounds = UIGraphicsGetPDFContextBounds();

for ( int i = 0 ; i < self.numberOfPages ; i++ )
{
    UIGraphicsBeginPDFPage();

    [self drawPageAtIndex: i inRect: bounds];
}

UIGraphicsEndPDFContext();

return pdfData;
}

这篇关于iPhoneSDK中的HTML到PDF转换的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！