private async Task QueryTrending(DiscoverItem item)
{
CommonProvider common = new CommonProvider();
List <TrendingResult> result = new List <TrendingResult>();
if (pageIndex == 0)
{
if (TrendingList == null)
{
TrendingList = new ObservableCollection <TrendingResult>();
}
else
{
TrendingList.Clear();
}
}
if (TypeSelectedItem.HotType != HotTopicType.None)
{
result = await common.QueryDiscover(TypeSelectedItem.HotType, pageIndex + 1, 20, new List <TrendingResult>(TrendingList));
}
if (TypeSelectedItem.Type != TopicType.None)
{
int index = 0;
if (TrendingList.Count != 0)
{
index = TrendingList[TrendingList.Count - 1].RecommendedAt - 1;
}
result = await common.QueryDiscover(TypeSelectedItem.Type, index, 20, 20);
}
result.ForEach(x => TrendingList.Add(x));
pageIndex++;
}