mobile static method

String? mobile(
  1. String? value, {
  2. String message = "Enter valid mobile number",
})

Implementation

static String? mobile(String? value, {String message = "Enter valid mobile number"}) {
  if (value == null || value.isEmpty) return null;

  final regex = RegExp(r'^[6-9]\d{9}$'); // Indian mobile
  if (!regex.hasMatch(value)) {
    return message;
  }
  return null;
}