private void GridViewer_OnRequestMoreItemFinished(GalleryGridView obj)
{
item_loading_notify?.Dispose();
item_loading_notify = null;
}
private void GridViewer_OnRequestMoreItemStarted(GalleryGridView obj)
{
item_loading_notify?.Dispose();
item_loading_notify = LoadStatusDisplayer.BeginBusy("正在加载图片列表...");
}
