public static void StartBackgroundJob(
MonitoredActivity activity, string title,
string message, Action job, Handler handler)
{
// Make the progress dialog uncancelable, so that we can gurantee
// the thread will be done before the activity getting destroyed.
ProgressDialog dialog = ProgressDialog.Show(activity, title, message, true, false);
ThreadPool.QueueUserWorkItem((w) => new BackgroundJob(activity, job, dialog, handler).Run());
}
public BackgroundJob(MonitoredActivity activity, Action job,
ProgressDialog progressDialog, Handler handler)
{
this.activity = activity;
this.progressDialog = progressDialog;
this.job = job;
this.handler = handler;
activity.Destroying += (sender, e) => {
// We get here only when the onDestroyed being called before
// the cleanupRunner. So, run it now and remove it from the queue
cleanUp();
handler.RemoveCallbacks(cleanUp);
};
activity.Stopping += (sender, e) => progressDialog.Hide();
activity.Starting += (sender, e) => progressDialog.Show();
}