显示 PDF

  NSString* fileName = @"firstIOS.PDF";

NSArray *arrayPaths =
NSSearchPathForDirectoriesInDomains(
                                    NSDocumentDirectory,
                                    NSUserDomainMask,
                                    YES);

NSString *path = [arrayPaths objectAtIndex:0];

NSString* pdfFileName = [path stringByAppendingPathComponent:fileName];

UIWebView* webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];

NSURL *url = [NSURL fileURLWithPath:pdfFileName];

NSURLRequest *request = [NSURLRequest requestWithURL:url];

[webView setScalesPageToFit:YES];

[webView loadRequest:request];

[self.view addSubview:webView];