private async Task getScreenFromServer()
{
try {
screens = await LessonUtil.GetScreensByLessonAsync(lesson_id);
} catch (Exception ex) {
DialogFactory.ToastDialog(this, "Data Error", "Error Connecting to Server,please try again later!", Constants.TEXT_ERROR);
}
if (screens != null)
{
//make text and images
screen = screens [0];
string type = screen.Type;
if (type.Contains("text"))
{
var texts = screen.Texts;
Utils.makeTextViews(texts, this, ll_content, Color.Black);
}
if (type.Contains("image"))
{
var imageslist = screen.Images;
var images = new List <Image> (imageslist);
Utils.makeTextImages(this, ll_content, images);
}
//make return button
Utils.makeReturnButton(this, ll_content);
ll_content.Visibility = ViewStates.Visible;
ll_load.Visibility = ViewStates.Invisible;
}
}
public async override void RowSelected(UITableView tableView, Foundation.NSIndexPath indexPath)
{
// Loading indicator
var loadingOverlay = new LoadingOverlay(Container.View.Bounds);
Container.View.Add(loadingOverlay);
IList <Screen> screens = null;
try
{
screens = (await LessonUtil.GetScreensByLessonAsync(Items[indexPath.Row].Id));
}
catch (Exception e)
{
var alert = UIAlertController.Create("Something goes wrong", String.Format("Please check your Internet connection and try again.{0} Details: {1}", Environment.NewLine, e.Message), UIAlertControllerStyle.Alert);
alert.AddAction(UIAlertAction.Create("OK", UIAlertActionStyle.Default, null));
Container.PresentViewController(alert, true, null);
}
loadingOverlay.HideThenRemove();
if ((screens != null) && (screens.Count > 0))
{
Container.NavigationController.PushViewController(new LessonScreenViewController(Items[indexPath.Row].Id, screens, 0, new List <ScreenAnswer>()), true);
}
else
{
var alert = UIAlertController.Create("Oops!", "There is nothing in this lesson.", UIAlertControllerStyle.Alert);
alert.AddAction(UIAlertAction.Create("OK", UIAlertActionStyle.Default, null));
Container.PresentViewController(alert, true, null);
}
tableView.DeselectRow(indexPath, true);
}
private async void getVideoUrlFromServer()
{
var result = await LessonUtil.GetScreensByLessonAsync(lessonId);
if (result != null && result.Count > 0)
{
Constants.screens = result;
//jump to screenactivity
Intent intent = new Intent(this, typeof(ScreensActivity));
intent.PutExtra(Constants.LESSON_TITLE, currentLesson.Title);
intent.PutExtra(Constants.LESSON_DES, currentLesson.Description);
intent.PutExtra(Constants.LESSON_ID, currentLesson.Id);
StartActivity(intent);
Finish();
}
else
{
lv_list.Visibility = ViewStates.Visible;
ll_load.Visibility = ViewStates.Invisible;
DialogFactory.ToastDialog(this, "Empty lesson", "Oops,this lesson has not uploaded yet!", 0);
}
}