public async Task getDataFromServer()
{
IList <Lesson> lessons = null;
try {
lessons = await LessonUtil.GetLessonsByModuleAsync(module_id);
} catch (Exception ex) {
DialogFactory.ToastDialog(this, "Data Error", "Error Connecting to Server,please try again later!", Constants.LESSON_ERROR);
}
if (lessons != null)
{
sourceDateList = new List <SortModel> ();
foreach (var lesson in lessons)
{
string name = lesson.Title;
if (name.Length > 0)
{
string firstAlpha = name.Substring(0, 1).ToUpper();
SortModel temp = new SortModel();
temp.SortLetters = firstAlpha;
temp.Name = name;
temp.LessonId = lesson.Id;
temp.ScreenCount = lesson.ScreenCount;
sourceDateList.Add(temp);
}
else
{
continue;
}
}
sourceDateList.Sort();
}
}
public async override void RowSelected(UITableView tableView, Foundation.NSIndexPath indexPath)
{
// Loading indicator
var loadingOverlay = new LoadingOverlay(Container.View.Bounds);
Container.View.Add(loadingOverlay);
IList <Lesson> lessons = null;
try
{
lessons = await LessonUtil.GetLessonsByModuleAsync(Items[indexPath.Row].Id);
}
catch (Exception e)
{
var alert = UIAlertController.Create("Something goes wrong", e.Message, UIAlertControllerStyle.Alert);
alert.AddAction(UIAlertAction.Create("OK", UIAlertActionStyle.Default, null));
Container.PresentViewController(alert, true, null);
}
loadingOverlay.HideThenRemove();
if ((lessons != null) && (lessons.Count > 0))
{
Container.NavigationController.PushViewController(new LessonsViewController(lessons, Items[indexPath.Row].Name), true);
}
else
{
var alert = UIAlertController.Create("Oops!", "There is nothing in this module", UIAlertControllerStyle.Alert);
alert.AddAction(UIAlertAction.Create("OK", UIAlertActionStyle.Default, null));
Container.PresentViewController(alert, true, null);
}
tableView.DeselectRow(indexPath, true);
}
public async void getLessonsFromServer()
{
try {
var lessons = await LessonUtil.GetLessonsByModuleAsync(module_id);
lessonList = new List <Lesson> (lessons);
} catch (Exception ex) {
DialogFactory.ToastDialog(this, "Server busy", "Server is busy,please drag down to refresh later", 0);
tv_pull_list_header_title.Text = "Server busy!";
tv_pull_list_header_title.SetTextColor(Color.Red);
}
if (lessonList != null)
{
lv_list.onRefreshComplete();
lv_list.Adapter = new MyListViewAdapter(this, lessonList);
lv_list.setOnRefreshListener(new MyRefreshListener(this));
lv_list.Visibility = ViewStates.Visible;
ll_load.Visibility = ViewStates.Invisible;
}
}