Credit card style editor

credit_card.dart

// https://dartpad.dartlang.org/1a5cf346acdf08979574adabdd3d59db
import 'package:flutter/material.dart';
import 'dart:math';

void main() {
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: EditCardForm(),
    );
  }
}


class EditCardForm extends StatefulWidget {
  EditCardForm({Key key}) : super(key: key);

  _EditProfileFormState createState() => _EditProfileFormState();
}

class _EditProfileFormState extends State<EditCardForm> {
  var _scaffoldKey = GlobalKey<ScaffoldState>();
  var _formKey = GlobalKey<FormState>();
  Color _avatarColor;
  Icon _cardType;
  var name = TextEditingController();
  var bio = TextEditingController();
  var bank = TextEditingController();
  List<Color> colorsList = [CustomColors.olive, CustomColors.lime, CustomColors.midnightGreen, CustomColors.yellow, CustomColors.orange, CustomColors.pink, CustomColors.purple];
  var _textStyle = TextStyle(color:Colors.white, fontWeight: FontWeight.bold);


  void setAvatarImage(Color color) {
    // var image = await ImagePicker.pickImage(source: ImageSource.camera);
    setState(() {
      _avatarColor = color;
    });
  }

  void validateAnswers() {
    if (name.value.text.isEmpty && bio.value.text.isEmpty){
        _scaffoldKey.currentState.showSnackBar(const SnackBar(content: const Text('Please fill in all the blanks')));
    } else {
        _scaffoldKey.currentState.showSnackBar(const SnackBar(content: const Text('Successfully updated')));
        _submitForm();
    }
  }

  void _submitForm() {
    setState(() {
      
    });
  }

  Widget buildNameInput(BuildContext context, GlobalKey<FormState> key){
       return TextFormField(
         autofocus: true,
        controller: name,
        decoration: InputDecoration(
          hintText: "Name",
          contentPadding: EdgeInsets.symmetric(horizontal: 20.0),
            // border: OutlineInputBorder(borderSide: BorderSide(width:2.0)),
          border: OutlineInputBorder(
            borderRadius: BorderRadius.circular(10.0)
          ),
        ),
      );
  }


  Widget buildMottoInput(BuildContext context, GlobalKey<FormState> key){
    return SizedBox(
      // width: MediaQuery.of(context).size.width - 70.0,
      child: TextFormField(
        maxLines: 1,
        controller: bio,
        decoration: InputDecoration(
          hintText: "Share whats cool about yourself",
          // hintStyle: TextStyle(fontStyle: ),
          contentPadding: EdgeInsets.all( 15.0),
          border: OutlineInputBorder(
            borderRadius: BorderRadius.circular(10.0)
          ),
        ),
        
      )
    );
  }

  List<Icon> iconlist =[Icon(Icons.terrain), Icon(Icons.sd_card), Icon(Icons.card_travel)].toList();


// terrain, sd_card, card_travel
  Widget buildCardSelector(BuildContext context, GlobalKey<FormState> key){
    return DropdownButton(
      value: _cardType,
      onChanged: (Icon newValue) {
        setState(() {
          _cardType = newValue;
        });
      },
      items: iconlist.map((Icon item) =>
        new DropdownMenuItem<Icon>(value: item, child: item)
      )
      .toList(),
      );
  }

  


  Widget buildColorSelector(BuildContext context){
    return Container(
      height: 20,
      alignment: Alignment.center,
      width: 300,
      // width: MediaQuery.of(context).size.width,
      child: ListView.builder(
        scrollDirection: Axis.horizontal,
        itemCount: 7,
        itemBuilder: (context, idx){
          return GestureDetector(
            onTap: (){
              setAvatarImage(colorsList[idx]);
            },
            child: CircleAvatar(
              radius: 20,
              backgroundColor: colorsList[idx],
            )
          );
        } 
      )
    );
  }
  Widget buildUserAvatar(){
    return Container(
      height: 200,
      width: MediaQuery.of(context).size.width - 50,
      decoration: BoxDecoration(color: _avatarColor ?? Colors.grey
      ),
      child: Column(
        children: <Widget>[
          Padding(
            padding: EdgeInsets.all(20),
            child:
          Row(children: <Widget>[
            Icon(Icons.data_usage, color: Colors.blue,),
            SizedBox(width: 20),
            Text(bank.value.text, style: _textStyle),
          ]),
          ),
          Padding(
            padding: EdgeInsets.all(10),
            child:
          Text(bio.value.text, style: _textStyle),
          ),
          Padding(
            padding: EdgeInsets.all(20),
            child:
          Row(children: <Widget>[
            Text(name.value.text, style: _textStyle,),
            SizedBox(width: 20),
            _cardType
          ],)
          )
        ],
      ),
    );
  }


  Widget buildHeader(BuildContext context){
    return Center(
      child: Container(
        padding: EdgeInsets.all(20),
        child:buildUserAvatar()
        )
      );
  }

//  title: Text("${user.firstName}", style: TextStyle(color: Colors.blueGrey, fontSize: 12.0, fontWeight: FontWeight.bold, fontFamily: "CircularStd-Book")),
  Widget buildForm(){
    return Form(
      key: _formKey,
      child: Column(children: <Widget>[
        Container(
          alignment: Alignment.centerLeft,
          padding: EdgeInsets.all(10.0),
          child: Text("Card Name", style: TextStyle(color: CustomColors.ochreBlue, fontSize: 20.0, fontWeight: FontWeight.bold, fontFamily: "CircularStd-Book")),
          ),
        // SizedBox(height: 5.0),
        buildNameInput(context, _formKey),
        SizedBox(height: 35.0),
        Container(
          alignment: Alignment.centerLeft,
          padding: EdgeInsets.all(10.0),
          child: Text("Card Number",style: TextStyle(color: CustomColors.ochreBlue, fontSize: 20.0, fontWeight: FontWeight.bold, fontFamily: "CircularStd-Book")),
          ),
        // SizedBox(height: 5.0),
        buildMottoInput(context, _formKey),
        SizedBox(height: 35.0),
        Container(
          alignment: Alignment.centerLeft,
          padding: EdgeInsets.all(10.0),
          child: Text("Institute",style: TextStyle(color: CustomColors.ochreBlue, fontSize: 20.0, fontWeight: FontWeight.bold, fontFamily: "CircularStd-Book")),
        ),
        buildCardSelector(context, _formKey)
      ],),
    );
  }

  @override
  void initState() {
        bank.value = TextEditingValue(text: "AMEX Travel Direct");
        bio.value = TextEditingValue(text: "8888 8888 8888 8888");
        name.value = TextEditingValue(text: "John Appleseed");
        _cardType = Icon(Icons.terrain);
        _cardType = iconlist.first;
        super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      key: _scaffoldKey,
      appBar: AppBar(
        centerTitle: true,
        title:Row(
          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
        children:[
          // Expanded(
          //   flex:2,
          //   child: Padding(padding:EdgeInsets.symmetric(horizontal:20.0),child:Text("Edit Profile", style: TextStyle(color: Colors.white,fontSize: 20.0, fontWeight: FontWeight.bold, fontFamily: "CircularStd-Book"),))
          // ),
          Expanded(
            flex:1,
            child: GestureDetector(
              onTap: (){
                validateAnswers();
              },
              child: Container(
                // margin: EdgeInsets.only(left: 10.0, right: 10.0),
                height: 35.0,
                // width: 50,
                padding: EdgeInsets.all(2.0),
                alignment: Alignment.center,
                decoration: BoxDecoration(
                  color: Colors.cyan,
                  borderRadius: BorderRadius.circular(10.0),
                ),
                child: Text("Save", style: TextStyle(color: CustomColors.orange, fontFamily: "CircularStd-Book",fontSize: 15.0),),
              ),
            )
          )
        ],
        )
      ),
      body: SingleChildScrollView(
        child: Column(
          children: <Widget>[
            Container(
              padding: EdgeInsets.symmetric(horizontal: 10.0, vertical: 20.0),
              child: buildColorSelector(context),
            ),
              buildHeader(context),
            Padding(
              padding: EdgeInsets.symmetric(horizontal: 15.0, vertical: 20.0), 
              child: buildForm()
            )
          ],) 
      ),
    );
  }
}

class CustomColors {
  static Color get darkTeal => Color.fromRGBO(46,97,112,1.0);
  static Color get midnightGreen => Color.fromRGBO(89, 155, 158, 1.0);
  static Color get purple => Color.fromRGBO(114,58,119, 1);
  static Color get ochreBlue => Color.fromRGBO(35, 45, 75, 1.0);
  static Color get orange => Color.fromRGBO(255,200,100, 1.0); 
  static Color get tealHighlight => Colors.tealAccent[700];
  static Color get lime => Color.fromRGBO(205,246,80, 1.0); // 205,246,80
  static Color get olive => Color.fromRGBO(154,160,57, 1.0); // 154,160,57
  static Color get yellow => Colors.yellow; // 
  static Color get pink => Colors.pinkAccent[100]; // 

  Color getRandomColor(){
    final random = Random();
    return Color.fromRGBO(
      random.nextInt(256),
      random.nextInt(256),
      random.nextInt(256),
      1,
    );
  }

}