InputField

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.dart';

class InputField extends StatelessWidget {
  final IconData icon;
  final String hint;
  final bool obscure;
  final Stream<String> stream;
  final Function(String) onChanged;

  const InputField({
    Key key,
    this.icon,
    this.hint,
    this.obscure,
    this.stream,
    this.onChanged,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return StreamBuilder<String>(
      stream: stream,
      initialData: "",
      builder: (context, snapshot) {
        print("Stream data: ${snapshot.data}");

        return TextField(
          onChanged: onChanged,
          decoration: InputDecoration(
            icon: Icon(icon, color: Colors.grey[600]),
            hintText: hint,
            hintStyle: TextStyle(color: Colors.grey[600]),
            focusedBorder: UnderlineInputBorder(
              borderSide: BorderSide(color: Colors.green),
            ),
            contentPadding: EdgeInsets.only(
              left: 5,
              right: 30,
              bottom: 30,
              top: 30,
            ),
            errorText: snapshot.hasError ? snapshot.error : null,
          ),
          style: TextStyle(color: Colors.grey[600]),
          obscureText: obscure,
        );
      },
    );
  }
}