webview 显示pdf

UIWebView*webView =[[UIWebView alloc] initWithFrame:CGRectMake(10,10,200,200)];

NSURL *targetURL =[NSURL URLWithString:@"http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIWebView_Class/UIWebView_Class.pdf"];
NSURLRequest*request =[NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];

[self.view addSubview:webView];
[webView release];

UIWebView*webView =[[UIWebView alloc] initWithFrame:CGRectMake(10,10,200,200)];

NSString*path =[[NSBundle mainBundle] pathForResource:@"document" ofType:@"pdf"];
NSURL *targetURL =[NSURL fileURLWithPath:path];
NSURLRequest*request =[NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];

[self.view addSubview:webView];
[webView release];