private void PhotoSelectedCommandExecute(object o)
{
try
{
Photo photo;
var args = o as ItemClickEventArgs;
if (args != null)
{
photo = args.ClickedItem as Photo;
}
else
{
photo = o as Photo;
}
if (photo != null)
{
var photoNavParam = new PhotoNavParameter()
{
Index = PhotoCollection.IndexOf(photo), Photos = PhotoCollection.ToList()
};
NavigationService.Navigate(typeof(Views.DetailPage), photoNavParam);
}
}
catch (Exception ex)
{
AppLogs.WriteError("[PhotoSelectedCommandExecute]", ex.ToString());
}
}
public override async Task OnNavigatedToAsync(object parameter, NavigationMode mode, IDictionary <string, object> suspensionState)
{
try
{
lock (_locker)
{
var param = parameter as PhotoNavParameter;
if (param != null)
{
PhotoNavParameter photoNavParam = param;
PhotoCollection = new ObservableCollection <Photo>(photoNavParam.Photos);
if (!PhotoCollection.IsEmpty())
{
var strIndex = (suspensionState.ContainsKey(nameof(SelectedPhotoIndex))) ?
suspensionState[nameof(SelectedPhotoIndex)]?.ToString() : null;
int index;
index = string.IsNullOrEmpty(strIndex) ? photoNavParam.Index : Convert.ToInt32(strIndex);
System.Diagnostics.Debug.WriteLine("PhotoCollection Count--> {0}", photoNavParam.Photos.Count);
System.Diagnostics.Debug.WriteLine("photoNavParam.Index--> {0}", index);
SelectedPhotoIndex = index;
}
}
}
await Task.CompletedTask;
}
catch (Exception ex)
{
AppLogs.WriteError("[OnNavigatedToAsync]", ex.ToString());
}
}