iOS中有没有一种方法可以合并PDF文件,即将一个文件的页面附加到另一个文件的末尾并将其保存到磁盘?
我对 Jonathan 的代码进行了一些重构,以加入任何大小的 PDF 文件:
+ (NSString *)joinPDF:(NSArray *)listOfPaths {
// File paths
NSString *fileName = @"ALL.pdf";
NSString *pdfPathOutput = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:fileName];
CFURLRef pdfURLOutput = ( CFURLRef)CFBridgingRetain([NSURL fileURLWithPath:pdfPathOutput]);
NSInteger numberOfPages = 0;
// Create the output context
CGContextRef writeContext = CGPDFContextCreateWithURL(pdfURLOutput, NULL, NULL);
for (NSString *source in listOfPaths) {
CFURLRef pdfURL = ( CFURLRef)CFBridgingRetain([[NSURL alloc] initFileURLWithPath:source]);
//file ref
CGPDFDocumentRef pdfRef = CGPDFDocumentCreateWithURL((CFURLRef) pdfURL);
numberOfPages = CGPDFDocumentGetNumberOfPages(pdfRef);
// Loop variables
CGPDFPageRef page;
CGRect mediaBox;
// Read the first PDF and generate the output pages
DLog(@"GENERATING PAGES FROM PDF 1 (%@)...", source);
for (int i=1; i<=numberOfPages; i++) {
page = CGPDFDocumentGetPage(pdfRef, i);
mediaBox = CGPDFPageGetBoxRect(page, kCGPDFMediaBox);
CGContextBeginPage(writeContext, &mediaBox);
CGContextDrawPDFPage(writeContext, page);
CGContextEndPage(writeContext);
}
CGPDFDocumentRelease(pdfRef);
CFRelease(pdfURL);
}
CFRelease(pdfURLOutput);
// Finalize the output file
CGPDFContextClose(writeContext);
CGContextRelease(writeContext);
return pdfPathOutput;
}
希望有帮助
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系:hwhale#tublm.com(使用前将#替换为@)