WebViewController *web = [[WebViewController alloc] initWithNibName:nil bundle:nil];

web.titleStr = @"導(dǎo)航欄標(biāo)題";

web.requestUrl = ［NSString ?string];

web.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

UINavigationController * jackNavigationController = [[UINavigationController alloc] initWithRootViewController:web];

jackNavigationController.navigationBar.barTintColor = [UIColor groupTableViewBackgroundColor];

[[UIApplication sharedApplication]? setStatusBarStyle : UIStatusBarStyleDefault];

[self presentViewController:jackNavigationController animated:YES completion:^{

}];