Flutter – Using as to cast list of timestamps not working

Issue

Map<String, dynamic> mapOfObjects; 
dates = mapOfObjects['dates'] as List<Timestamp>;

mapOfObjects looks like this:

{requiredCompletions: 0, totalCompletions: 0, incentive: [{rewardAmt: 0, rewardId: }], habitType: 1, id: , habitNotifications: false, dates: [Timestamp(seconds=1618903800, nanoseconds=0)], habitDescription: }

I am running this under a FutureBuilder that is fetching from Firebase, and it is getting hung up on the dates. I can specify the index by doing the following:

date = mapOfObjects['dates'][0] as Timestamp;

and it works perfectly fine. Why isn’t the as casting working?

Solution

dates = List<Timestamp>.from(mapOfObjects['dates'] as List);

Answered By – Sarbagya Dhaubanjar

Answer Checked By – Marie Seifert (FlutterFixes Admin)