TextFormField( inputFormatters: [ FilteringTextInputFormatter.deny(RegExp('[a-zA-Z]')), FilteringTextInputFormatter.allow(RegExp('[0-9]')), ], maxLength: 2, controller: controller, ), ), I want to prevent the user from entering a number greater than 12 in the TextFormField. It can only write numbers between 1-12(including 12).
I want to have ListTile widget that sometimes has title as null, e.g.: ListTile( title: item.title.isNotEmpty ? Text( item.title, maxLines: 1, ) : null, subtitle: Text( task.text, maxLines: 3, overflow: TextOverflow.fade, ), } If the title is null, it stays…
To briefly explain the code, we have a simple stream builder which fetches data in the Firestore Database and then we return and display the value of 'username' on the screen. We also have a TextField in the same widget…
I am using the syncfusion_flutter_calendar package. My objective is to populate the calendar with data coming from Firestore. When I try the code below, I am getting an error that I understand, but I do not find where to fix…
am developing a flutter application with firestore. in firestore I have a field called role and I managed to access it in my code. The role is printed correctly in the console.But I need help in displaying differnt page for…
I have a Querysnapshot snapshot I can supply an index and access the fields of the document perfectly like: snapshot.data!.docs[index] However, I want to access the field of document 'thisParticularDocument' which is the id (name) of the document in Cloud…
I have a Flutter app where users can predict the outcome of a soccer match. The problem is that if the user changes the time on their phone they can still predict even after it has ended. How do I…
Future<void> launchInBrowser(String url) async { Uri dir = Uri.parse(url); if (!await launchUrl( dir, mode: LaunchMode.externalApplication, )) { throw 'Could not launch $url'; } } I am using url_launcher version 6.1.6 flutter plugin and when I build the app I get…
I want to change the value of "check" for particular values of "attendance" FirebaseFirestore.instance.collection('students').doc().set({ 'doc':FirebaseFirestore.instance.collection('students').doc(), 'attendance':title, 'check':true }); What code should I use if I want to change the value of the field of that particular documents.
Help me pls. I have this error. 10Q Unhandled Exception: NoSuchMethodError: Class 'FirebaseAuthException' has no instance getter '_message'. E/flutter ( 5700): Receiver: Instance of 'FirebaseAuthException' E/flutter ( 5700): Tried calling: _message await _auth .signInWithEmailAndPassword( email: _emailTextEditingController.text.trim(), password: _passwordTextEditingController.text.trim(), ) .then((authUser)…