iOS PDF的显示和浏览

来源：互联网发布：米6 手机无法连接网络编辑：程序博客网时间：2024/05/22 17:45

方法一：利用webview

-(void)loadDocument:(NSString *)documentName inView:(UIWebView *)webView  {      NSString *path = [[NSBundle mainBundle] pathForResource:documentName ofType:nil];      NSURL *url = [NSURL fileURLWithPath:path];      NSURLRequest *request = [NSURLRequest requestWithURL:url];      [webView loadRequest:request];  }

利：1.实现简单

弊：1.仅能浏览，拿不到任何回调。

2.固定竖版拖动，不能实现翻页动画效果

方法二：利用CGContextDrawPDFPage

gitHub: https://github.com/marujun/IBooKTurnPagesReader

CGPDFDocumentRef GetPDFDocumentRef(NSString *filename)  {      CFStringRef path;      CFURLRef url;      CGPDFDocumentRef document;      size_t count;   NSString *filePath=[[[NSBundlemainBundle] resourcePath]stringByAppendingPathComponent:filename];    path = CFStringCreateWithCString (NULL, [filePath UTF8String], kCFStringEncodingUTF8);      url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0);            CFRelease (path);      document = CGPDFDocumentCreateWithURL (url);      CFRelease(url);      count = CGPDFDocumentGetNumberOfPages (document);      if (count == 0) {          printf("[%s] needs at least one page!\n", [filename UTF8String]);          return NULL;       } else {          printf("[%ld] pages loaded in this PDF!\n", count);      }      return document;  }    void DisplayPDFPage (CGContextRef myContext, size_t pageNumber, NSString *filename)  {      CGPDFDocumentRef document;      CGPDFPageRef page;            document = GetPDFDocumentRef (filename);      page = CGPDFDocumentGetPage (document, pageNumber);      CGContextDrawPDFPage (myContext, page);      CGPDFDocumentRelease (document);  }

这样显示出来的pdf单页是倒立的，Quartz坐标系和UIView坐标系不一样所致，调整坐标系，使pdf正立：

CGContextRef context = UIGraphicsGetCurrentContext();  CGContextTranslateCTM(context, 80, self.frame.size.height-60);  CGContextScaleCTM(context, 1, -1);

转自：http://blog.csdn.net/yiyaaixuexi/article/details/7645725

参考：http://marshal.easymorse.com/archives/3585