Android崩溃的java.lang.SecurityException

Question

有一些关于数十万次下载应用的报告如下：

XElement xmlroots = XElement.Parse(parsingNewXML);
//Dialog = xmlroots.Element("Dialog").Value;
var CallVariable = parsingNewXML.Contains("CallVariable");
var startCall = parsingNewXML.Contains("ALERTING");

if (CallVariable == true && startCall == true)
{

    foreach (XElement callID in xmlroots.Descendants("Dialog"))
    {
        DialogID = callID.Element("id").Value;
        //System.Windows.MessageBox.Show(DialogID);
        System.Windows.Application.Current.Dispatcher.BeginInvoke(
        DispatcherPriority.Background,
        new Action(() => ((MainWindow)System.Windows.Application.Current.MainWindow).answerCall.Visibility = Visibility.Visible));
    }
    foreach (XElement callVariables in xmlroots.Descendants("CallVariables"))
    {
        foreach (XElement callVariable in xmlroots.Descendants("CallVariable"))
        {
            list = callVariable.Element("value").Value;
        }
    }
   // state = second.Element("state").Value;
}

我无法找出可能原因的线索。任何人都可以对此有所了解吗？