从另一个控制器调用时，不会加载UIWebview loadRequest

Question

当我的web viewDidLoad触发时，它正确设置了我的Web视图的起始URL并记录了“加载请求：http://xxxxxx.dev/login”。正如您所期望的那样。

从SidebarViewController调用loadRequestFromString时，webview不会更改为正确的URL。但是，由于NSLog，我可以看到它正在达到这一点，只是没有刷新URL“加载请求：http://xxxxxx.dev/this-is-the-url-that-should-load”。

SidebarViewController.m

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    [tableView deselectRowAtIndexPath:indexPath animated:YES];

    NSString *url = self.tableData[indexPath.row][@"url"];

    [self.revealViewController setFrontViewPosition: FrontViewPositionLeft animated: YES];

    WebAppViewController *wvc = [[WebAppViewController alloc] initWithNibName:@"webappController" bundle:kNilOptions];
    [wvc loadRequestFromString:url];
}

WebAppViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.webView.delegate = self;
    // Do any additional setup after loading the view, typically from a nib.
    [self loadRequestFromString:@"http://xxxxxx.dev/login"];
}

.....

- (void)loadRequestFromString:(NSString*)urlString
{

    self.webView.delegate = self;

    NSLog(@"Load Request: %@", urlString);

    NSString *properlyEscapedURL = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    NSURL *url = [NSURL URLWithString:properlyEscapedURL];

    NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];

    [self.webView loadRequest:urlRequest];

}