如何将UIView导出为PDF文件 [英] How to export UIView to PDF file

问题描述

在我的应用程序中实现导出PDF功能，用于导出的内容是 UIView 。现在我有一个列表数据，并使用for循环加载所有对象，每个对象将被加载到 UIView 并导出一个页面。输出文件应该有多页，但只有一个第一页。

I implement exporting PDF feature in my application, content used to export is UIView. Now I have a list data and use for loop to load all objects, every object will be loaded in UIView and export a page. The output file should have multipage but it has only one first page.

这是我的代码：

UIGraphicsBeginPDFContextToFile(path, CGRectZero, nil);
_context = UIGraphicsGetCurrentContext();

for (Entry *entry in listEntries) {
    [self loadEntry:entry.date];

    UIGraphicsBeginPDFPageWithInfo(CGRectMake(0.0f, -160.0f, 768.0f, 660.0f), nil);
    [self.layer renderInContext:_context];
    UIGraphicsEndPDFContext();
}

提前感谢

推荐答案

有没有一个 UIGraphicsEndPDFPageWithInfo（）或类似的东西？您需要决定何时将内容溢出，并在将其转换为PDF之前启动新页面。至少这是我以前用CoreGraphics做这样的事情时所做的。如果没有 EndPage 函数，或许只需另外调用 BeginPage 就可以了。

Is there a UIGraphicsEndPDFPageWithInfo() or something like that? You need to decide when your content will spill over, and start a new page before rendering it to the PDF. At least that's what I used to do when I used CoreGraphics to do this kind of thing. If there is no EndPage function, perhaps just another call to BeginPage will do the trick.

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