GCD Loading of Local UIWebView

gistfile1.m

  // loadRequest

  UIWebView *webView = [[UIWebView alloc] initWithFrame:[UIScreen mainScreen].bounds];
  NSURL *htmlPath    = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"about" ofType:@"html"] isDirectory:NO];

  dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
  dispatch_async(queue, ^{
    
    NSURLRequest *request = [NSURLRequest requestWithURL:htmlPath];
    
      [webView loadRequest:request];

    dispatch_sync(dispatch_get_main_queue(), ^{
      [self.view addSubview:webView];
      [webView release];
    });
  });

  // loadHTMLString
  UIWebView *webView = [[UIWebView alloc] initWithFrame:[UIScreen mainScreen].bounds];
  NSURL *htmlPath    = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"about" ofType:@"html"] isDirectory:NO];

  dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
  dispatch_async(queue, ^{
    
    NSURLRequest *request = [NSURLRequest requestWithURL:htmlPath];
    NSString *htmlString  = [NSString stringWithContentsOfURL:htmlPath 
                                                     encoding:NSUTF8StringEncoding 
                                                       error:nil];
    
    [webView loadHTMLString:htmlString baseURL:nil];

    dispatch_sync(dispatch_get_main_queue(), ^{
      [self.view addSubview:webView];
      [webView release];
    });
  });

  // loadHTMLData
  UIWebView *webView = [[UIWebView alloc] initWithFrame:[UIScreen mainScreen].bounds];
  NSURL *htmlPath    = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"about" ofType:@"html"] isDirectory:NO];

  dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
  dispatch_async(queue, ^{
    
    NSURLRequest *request = [NSURLRequest requestWithURL:htmlPath];
    
    NSData *data = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"about" 
                                                                                  ofType:@"html"]];
    
    [webView loadData:data MIMEType:@"text/html" textEncodingName:@"html" baseURL:nil];

    dispatch_sync(dispatch_get_main_queue(), ^{
      [self.view addSubview:webView];
      [webView release];
    });
  });