调整MonoTouch.Dialog StyledMultilineElement在异步调用之后

Question

我正在玩MonoTouch。对话框并编写了一些代码来显示一些tweet。问题是表单元格太小，当我异步加载StyledMultilineElement s 时，单元格都聚集在一起。当我同步加载它们时(即没有QueueUserWorkItem/InvokeOnMainThread部分)，它们看起来绝对完美

是否有一种方法可以让表格单元格重新计算它们的高度?

// This method is invoked when the application has loaded its UI and its ready to run
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{           
    window.AddSubview(navigation.View);
    var tweetsSection = new Section("MonoTouch Tweets"){
        new StringElement("Loading...") //placeholder
    };
    var menu = new RootElement("Demos"){
        tweetsSection,
    };
    var dv = new DialogViewController(menu) { Autorotate = true };
    navigation.PushViewController(dv, true);                
    window.MakeKeyAndVisible();
    // Load tweets async
    UIApplication.SharedApplication.NetworkActivityIndicatorVisible = true;
    ThreadPool.QueueUserWorkItem(delegate {
        var doc = XDocument.Load("http://search.twitter.com/search.atom?q=%23MonoTouch");
        var atom = (XNamespace)"http://www.w3.org/2005/Atom";
        var tweets = 
            from node in doc.Root.Descendants(atom + "entry")
            select new { 
                Author = node.Element(atom + "author").Element(atom + "name").Value, 
                Text =  node.Element(atom + "title").Value
            };
        var newElements = 
                from tweet in tweets
                select new StyledMultilineElement(
                    tweet.Author, 
                    tweet.Text);
        InvokeOnMainThread(delegate {
            UIApplication.SharedApplication.NetworkActivityIndicatorVisible = false;
            tweetsSection.Remove(0);                                    
            tweetsSection.Add(newElements.Cast<Element>().ToList());    
        });
    });
    return true;
}

Answer 1

尝试在对话框视图控制器的顶层Root元素上设置UnevenRows属性，在本例中为"menu":

menu.UnevenRows = true