从文档目录加载PDF - iPhone

问题描述

我没有从资源文件夹中加载PDF，而是希望
从文档目录中加载它。我一直试图做这个
几天，但CGPDFDocumentRef一直保持返回NULL。这是我的
代码：

Instead of loading a PDF from the resources folder I would like toload it from the documents directory. I have been trying to do thisfor days but the CGPDFDocumentRef keeps returning NULL. Here is mycode:

                // Get Documents Directory
                NSArray *searchPaths =
NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
                NSString *documentsDirectoryPath = [searchPaths objectAtIndex:0];
                NSString *tempPath = [documentsDirectoryPath
stringByAppendingPathComponent:[appDelegate.issueToLoad
stringByAppendingPathExtension:@"pdf"]];
                NSString *path = [tempPath
stringByReplacingOccurrencesOfString:@"localhost/" withString:@""];
                NSLog(@"PATH: %@", path);
                //Display PDF
                CFURLRef pdfURL = CFURLCreateWithFileSystemPath (NULL,
(CFStringRef)path, kCFURLPOSIXPathStyle, FALSE);
                NSLog(@"PDF URL: %@", pdfURL);
                pdf = CGPDFDocumentCreateWithURL(finalURL);
                NSLog(@"PDF: %@", pdf);

文件路径是正确的，我检查了模拟器文件
目录，文件是绝对有。当我运行应用程序时，
最后一个NSLog说（NULL）并显示一个空白页面PDF。
任何想法有什么不对？
谢谢！

The file path is correct and I have checked the simulator documentsdirectory and the file is definitely there. When I run the app thelast NSLog says (NULL) and a blank white page PDF is displayed.Any ideas what is wrong?Thanks!

推荐答案

显而易见的答案是在DocumentCreate函数中使用pdfURL。 finalURL无处不在，它甚至不明显是什么。

The obvious answer would be to use the pdfURL in der DocumentCreate function. finalURL comes out of nowhere and it's not apparent what it's even there for.

pdf = CGPDFDocumentCreateWithURL（pdfURL）;

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