顯示一個消息框錯誤

Question

我正在使用MonoDevelop for Android，並且想要實現一個消息框。

我目前正在驗證碼出來的MapsAndLocationDemo。

這裏是我的代碼：從主「的OnCreate」函數調用時

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(); 
    } 

此代碼工作正常。不過，我想從基於'ItemizedOverlay'的'Overlay'調用此代碼。

我收到以下錯誤：

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

我怎麼能請得到這個工作？還是有更好的方法來顯示一個消息框？

謝謝

Answer 1

所有需要做的就是使功能靜態。