UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectZero];
NSURL *url = [NSURL URLWithString:@"mqq://im/chat?chat_type=wpa&uin=315778372&version=1&src_type=web"]
NSURLRequest *request = [NSURLRequest requestWithURL:url];
webView.delegate = self;
[webView loadRequest:request];
webView.delegate = self;
[webView loadRequest:request];
[self.view addSubview:webView];