async Task ExecuteRefreshingCommand(bool pullFromCloud = false)
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
var service = new ZumoService();
if (pullFromCloud)
{
IsRefreshing = true;
await service.SyncOfflineCache();
IsRefreshing = false;
}
var results = await service.GetAllToDoItems();
Items.Clear();
foreach (var item in results)
{
Items.Add(item);
}
}
finally
{
IsBusy = false;
}
}
private async Task ExecuteSaveCmd()
{
try
{
if (IsBusy)
{
return;
}
IsBusy = true;
var svc = new ZumoService();
if (string.IsNullOrEmpty(Item.Id))
{
await svc.CreateToDo(Item);
}
else
{
await svc.UpdateToDo(Item);
}
MessagingCenter.Send(this, "refresh_list");
}
finally
{
IsBusy = false;
await nav.PopAsync();
}
}
protected async override void OnResume()
{
// Handle when your app resumes
if (Settings.HasSyncStarted)
{
var zumoService = new ZumoService();
var hasPending = await zumoService.HasPendingOperations();
if (hasPending)
{
await zumoService.SyncOfflineCache();
}
}
}
public ToDoListPageViewModel(INavigation nav)
{
Title = "To Do Items";
navigation = nav;
InitialRefreshList();
var service = new ZumoService();
Task.Run(async() =>
{
await service.RegisterForPushNotifications();
});
MessagingCenter.Subscribe <PushToSync>(this, "ItemsChanged", async(obj) =>
{
await ExecuteRefreshingCommand(true);
});
}