Xamarin iOS-模拟器视图未刷新

Question

I have a simple piece of code built in Xamarin for iOS in my ViewController :

    void LogMessage (string message)
    {
        logText.Text += string.Format("\n{0}", message));
    }

where logText is:

    [Outlet]
    [GeneratedCode ("iOS Designer", "1.0")]
    UILabel logText { get; set; }

The code is being called, the Text property of the logText is being updated properly, but in iOS Simulator I see no change at all. I tried replacing UILabel with UITextView but nothing changes.

Answer 1

If you are trying to update the UI from a background thread, it will not work. To force the update on the UI thread, try this

InvokeOnMainThread (delegate {  
    logText.Text += string.Format("\n{0}", message));
});