iOS PDF的显示和浏览

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