如何以编程方式在iOS中将PDF拆分为单独的单页PDF [英] How to split PDF into separate single page PDF in iOS programmatically
本文介绍了如何以编程方式在iOS中将PDF拆分为单独的单页PDF的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
要求是将PDF拆分为单个页面,仅将单个文件保留为.pdf扩展名。
在/ CreatedPDF文件夹中创建的文件未打开
The requirement is to split the PDF in to individual page, retaining the individual file as .pdf extension only. The files which are created in /CreatedPDF Folder are not getting opened
请帮助解决/纠正这个问题。
Please help in figuring/correcting this issue.
//"fileURL" is the original File which has to be broken
//"pages" is the number of pages in PDF
NSInteger pages = CGPDFDocumentGetNumberOfPages(pdfDocReference);
for (int page = 1; page <= pages; page++)
{
NSFileManager *fm = [NSFileManager defaultManager];
NSString *dirName = [documentsDirectory stringByAppendingPathComponent:@"/CreatedPDF"];
[fm createDirectoryAtPath:dirName withIntermediateDirectories:YES attributes:nil error:nil];
NSString *pdfPath = [dirName stringByAppendingPathComponent:[NSString stringWithFormat:@"page_%d.pdf",page]];
NSURL *pdfUrl = [NSURL fileURLWithPath:pdfPath];
CGContextRef context = CGPDFContextCreateWithURL((__bridge_retained CFURLRef)pdfUrl, NULL, NULL);
CGPDFDocumentRef pdfDoc = CGPDFDocumentCreateWithURL((__bridge_retained CFURLRef)fileURL);
CGPDFPageRef pdfPage = CGPDFDocumentGetPage(pdfDoc, 1);
CGRect pdfCropBoxRect = CGPDFPageGetBoxRect(pdfPage, kCGPDFMediaBox);
// Copy the page to the new document
CGContextBeginPage(context, &pdfCropBoxRect);
CGContextDrawPDFPage(context, pdfPage);
// Close the source files
CGContextEndPage(context);
CGPDFDocumentRelease(pdfDoc);
}
推荐答案
我错过了一行代码因为我们还要释放CGContext,所以在循环中只需添加行,其余所有代码都可以工作。
i missed one line of code, as we have to release the CGContext also, so within the loop just add the line, rest all code will work.
CGContextRelease (context);
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