iOS在app中打开word、execl、pdf等文档

//用UIWebView
-(void)open:(NSString*)wordName andView:(UIWebView*)webView
{

NSString *path = [[NSBundle
mainBundle] pathForResource:wordName
ofType:nil];

NSURL *url = [NSURL
fileURLWithPath:path];

NSURLRequest *request = [NSURLRequest
requestWithURL:url];
[webView
loadRequest:request];
}

[self open:@"test.doc" andView:self.myweabl];