public async Task <bool> MultipleDeleteContacts()
{
int count = MegaContactsList.Count(n => n.IsMultiSelected);
if (count < 1)
{
return(false);
}
var customMessageDialog = new CustomMessageDialog(
AppMessages.DeleteMultipleContactsQuestion_Title,
String.Format(AppMessages.DeleteMultipleContactsQuestion, count),
App.AppInformation,
MessageDialogButtons.OkCancel);
customMessageDialog.OkOrYesButtonTapped += (sender, args) =>
{
Deployment.Current.Dispatcher.BeginInvoke(() => ProgressService.SetProgressIndicator(true, ProgressMessages.RemoveContact));
var helperList = new List <Contact>(count);
helperList.AddRange(MegaContactsList.Where(n => n.IsMultiSelected));
foreach (var contact in helperList)
{
MegaSdk.removeContact(MegaSdk.getContact(contact.Email), new RemoveContactRequestListener(this, contact));
}
Deployment.Current.Dispatcher.BeginInvoke(() => ProgressService.SetProgressIndicator(false));
this.IsMultiSelectActive = false;
};
return(await customMessageDialog.ShowDialogAsync() == MessageDialogResult.OkYes);
}
public void GetMegaContacts()
{
// User must be online to perform this operation
if (!IsUserOnline())
{
return;
}
// First cancel any other loading task that is busy
CancelLoad();
// Create the option to cancel
CreateLoadCancelOption();
SetEmptyContentTemplate(true);
OnUiThread(() => MegaContactsList.Clear());
MUserList contactsList = this.MegaSdk.getContacts();
Task.Factory.StartNew(() =>
{
try
{
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
for (int i = 0; i < contactsList.size(); i++)
{
// If the task has been cancelled, stop processing
if (LoadingCancelToken.IsCancellationRequested)
{
LoadingCancelToken.ThrowIfCancellationRequested();
}
// To avoid null values
if (contactsList.get(i) == null)
{
continue;
}
if ((contactsList.get(i).getVisibility() == MUserVisibility.VISIBILITY_VISIBLE))
{
var _megaContact = new Contact()
{
Handle = contactsList.get(i).getHandle(),
Email = contactsList.get(i).getEmail(),
Timestamp = contactsList.get(i).getTimestamp(),
Visibility = contactsList.get(i).getVisibility(),
AvatarColor = UiService.GetColorFromHex(SdkService.MegaSdk.getUserAvatarColor(contactsList.get(i)))
};
MegaContactsList.Add(_megaContact);
MegaSdk.getUserAttribute(contactsList.get(i), (int)MUserAttrType.USER_ATTR_FIRSTNAME,
new GetContactDataRequestListener(_megaContact));
MegaSdk.getUserAttribute(contactsList.get(i), (int)MUserAttrType.USER_ATTR_LASTNAME,
new GetContactDataRequestListener(_megaContact));
MegaSdk.getUserAvatar(contactsList.get(i), _megaContact.AvatarPath,
new GetContactAvatarRequestListener(_megaContact));
}
}
SetEmptyContentTemplate(false);
});
}
catch (OperationCanceledException)
{
// Do nothing. Just exit this background process because a cancellation exception has been thrown
}
}, LoadingCancelToken, TaskCreationOptions.PreferFairness, TaskScheduler.Current);
}
