显示一个消息框错误

Question

我正在使用MonoDevelop for Android，并且想要实现一个消息框。

我目前正在验证码出来的MapsAndLocationDemo。

这里是我的代码：从主“的OnCreate”函数调用时

public void createMessageBox (string stringQuestion) 
    { 
     var builder = new AlertDialog.Builder(this); 
     builder.SetTitle ("Test"); 
     builder.SetIcon (Resource.Drawable.Icon); 
     builder.SetMessage (stringQuestion); 

     builder.SetPositiveButton ("Yes", (sender, e) => { 
      Toast.MakeText (this, "You clicked positive button", ToastLength.Short).Show(); 
     }); 

     builder.SetNegativeButton ("No", (sender, e) => { 
      Toast.MakeText (this, "You clicked negative button", ToastLength.Short).Show(); 
     }); 

     builder.SetNeutralButton ("Maybe", (sender, e) => { 
      Toast.MakeText(this, "You clicked neutral button", ToastLength.Short).Show(); 
     }); 

     var dialog = builder.Create(); 
     dialog.Show(); 
    } 

此代码工作正常。不过，我想从基于'ItemizedOverlay'的'Overlay'调用此代码。

我收到以下错误：

Cannot access a non-static member of outer type 'MapsAndLocationDemo.MapWithOverlayActivity' via nested type 'MapsAndLocationDemo.MapWithOverlayActivity.MapItemizedOverlay'

我怎么能请得到这个工作？还是有更好的方法来显示一个消息框？

谢谢

Answer 1

所有需要做的就是使功能静态。