public override Task NavigatedToAsync(object parameter = null)
{
return(Task.Factory.StartNew(async() =>
{
do
{
await Task.Delay(100);
} while (ComposerList.Count == 0);
Device.BeginInvokeOnMainThread(() =>
{
if (Device.RuntimePlatform.Equals(Device.iOS)) //iOS
{
if (ComposerSimpleList.Any())
{
return;
}
ComposerSimpleList.AddRange(ComposerList);
}
else
{
if (Composers.Any())
{
return;
}
var groups = ComposerList.GroupBy(x => x.Name.First().ToString());
foreach (var group in groups)
{
var coll = new ComposerGroup();
coll.AddRange(group);
coll.ShortName = group.Key;
Composers.Add(coll);
}
}
});
}));
}