// Re/create observations list organised according to whether reverseSort true/false
private void UpdateMainPageStackLayout()
{
observations = ObservationSerialization.LoadObservationListFromPreferences();
if (reverseSort)
{
observations.Reverse();
}
CreateObservationLabels();
}
// Handle save new Observation object data to Preferences, notify MainPage view when done via message
private async void OnButtonSaveClickedAsync(object sender, EventArgs args)
{
species = Species.Text;
notes = Notes.Text;
// Handle create Observation object, convert to JSON, save to Preferences
Observation newObservation = CreateObservationObject(species, notes, rarity);
ObservationSerialization.SaveObservationToPreferences(newObservation);
NotifyObjectDataSaved();
await Navigation.PopAsync();
}