flutter

You can use regex for this Form and TextFormField like so Form( autovalidateMode: AutovalidateMode.always, child: TextFormField( validator: validateEmail, ), ) then the validation function String? validateEmail(String? value) { const pattern = r”(?:[a-z0-9!#$%&’*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'” r’*+/=?^_`{|}~-]+)*|”(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-‘ r’\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*”)@(?:(?:[a-z0-9](?:[a-z0-9-]*’ r'[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4]’ r'[0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9]’ r'[0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\’ r’x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])’; final regex = RegExp(pattern); return value!.isNotEmpty && !regex.hasMatch(value) ? ‘Enter a valid email address’ : null; } … Read more

I’ve found a solution implementing the code below void _showBottomSheet(BuildContext context) { showModalBottomSheet( context: context, isScrollControlled: true, backgroundColor: Colors.transparent, builder: (context) { return GestureDetector( onTap: () => Navigator.of(context).pop(), child: Container( color: Color.fromRGBO(0, 0, 0, 0.001), child: GestureDetector( onTap: () {}, child: DraggableScrollableSheet( initialChildSize: 0.4, minChildSize: 0.2, maxChildSize: 0.75, builder: (_, controller) { return Container( decoration: … Read more

As per the directions given by Britannio, I have solved my problem but I want to share my solution so that it can help others. I am confused about one thing that I have to call setState() with empty body which is not recommended so if any one have a better solution then please comment. … Read more

Based on the answer of DeveloperOmar 100 I found the following solution: switch your Java version to a compatible version, in my case to Java version 16.0.2 To switch it you have to set your PATH. (e.g for Mac, you can use the java_home command). check your Gradle version and update that one too, so … Read more