CODEWITHSUNDEEP
flutter
Jason Simard
Jason Simard

Reputation: 133

Flutter contains always return true

I may missunderstand something.

_thisEvent.eventKidsPayed is a List that contains documentID strings. kidsSnapshot.data.documents[index].documentID will give us a string.

_thisEvent.eventKidsPayed is currently EMPTY there is nothing in the list.

bool _payed = false;
if (_thisEvent.eventKidsPayed.contains(kidsSnapshot
    .data.documents[index].documentID)) {
       _payed = true;
    }

It's always returning true. Why ?

Upvotes: 0

Views: 571

Answers (2)

Jason Simard
Jason Simard

Reputation: 133

The problem was with my Insert and Delete and not with my .contains Sorry all for disturbing and time lost.

I was doing this by error (this is not the code but the logic)

If(value) //true if contains
  array remove
else
  array union

So it was totally wrong, I fixed doing If(!value). Sorry for this.

Upvotes: 0

Salim Murshed
Salim Murshed

Reputation: 1451

You need to use setState to change bool. Follow the below code. You need to use StatefulWidget for using setState.

bool _payed = false;
if (_thisEvent.eventKidsPayed.contains(kidsSnapshot
    .data.documents[index].documentID)) {

 setState(() {
  _payed = true;
 });
}

Upvotes: 1

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