How can I resolve " Error: The operator '[]' isn't defined for the class 'Object?'"



appBar: AppBar(
    title: StreamBuilder<DocumentSnapshot>(
        stream:  _firestore.collection('users').doc(userMap['uid']).snapshots(),
        builder: (context, snapshot){
          if ( != null){
            return Container(
              child: Column(
                children: [
                    style: TextStyle(fontSize: 14),
            return Container();

I try to check the status of the user and show in the appbar if the user is online or offline, I already create a variable for that and It’s work proprely but when I want to show the status in the appbar I have this error.!.data()['status'],

the error is on this line
if somoene can help that will be cool.


Try this:
(!.data() as Map<String, dynamic>)['status'],

Dart doesn’t know which type of object it is getting.

See reference:
The operator '[]' isn't defined for the class 'Object'. Dart

Answered By – J.K.

This Answer collected from stackoverflow, is licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0

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