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  • IOS

    来自:http://www.cnblogs.com/tx8899/p/4082749.html

    #pragma mark - Merge PDF

     

    - (void)mergePDF

    {

        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectoryNSUserDomainMaskYES);

        NSString *filePath1 = [[paths objectAtIndex:0stringByAppendingPathComponent:@"阅办卡.pdf"];

        NSString *filePath2 = [[paths objectAtIndex:0stringByAppendingPathComponent:@"文件.pdf"];

        NSArray *PDFURLS = [NSArray arrayWithObjects:filePath1,filePath2, nil];

        

        [self joinPDF:PDFURLS];

    }

     

    - (NSString *)joinPDF:(NSArray *)listOfPaths {

        // File paths

        NSString *fileName = [NSString stringWithFormat:@"公文%d.pdf",arc4random_uniform(100)];

        NSString *pdfPathOutput = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectoryNSUserDomainMaskYES)objectAtIndex:0stringByAppendingPathComponent:fileName];

        

        CFURLRef pdfURLOutput = (  CFURLRef)CFBridgingRetain([NSURL fileURLWithPath:pdfPathOutput]);

        

        NSInteger numberOfPages = 0;

        // Create the output context

        CGContextRef writeContext = CGPDFContextCreateWithURL(pdfURLOutput, NULLNULL);

        

        for (NSString *source in listOfPaths) {

            CFURLRef pdfURL = (  CFURLRef)CFBridgingRetain([[NSURL allocinitFileURLWithPath: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

            //        NSLog(@"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;

    }

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  • 原文地址:https://www.cnblogs.com/endtel/p/4847341.html
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