ShivamGoyal1899

class CustomPicker extends CommonPickerModel {
  String digits(int value, int length) {
    return '$value'.padLeft(length, "0");
  }
CustomPicker({DateTime currentTime, LocaleType locale}) : super(locale: locale) {
    this.currentTime = currentTime ?? DateTime.now();
    this.setLeftIndex(this.currentTime.hour);
    this.setMiddleIndex(this.currentTime.minute);
    this.setRightIndex(this.currentTime.second);
  }

ShivamGoyal1899

const AlertDialog({
    Key key,
    Widget title,
    EdgeInsetsGeometry titlePadding,
    TextStyle titleTextStyle,
    Widget content,
    EdgeInsetsGeometry contentPadding: const EdgeInsets.fromLTRB(24.0, 20.0, 24.0, 24.0),
    TextStyle contentTextStyle,
    List<Widget> actions,
    Color backgroundColor,

ShivamGoyal1899

...
flutter:
  uses-material-design: true
  assets:
    - assets/images/listening.gif
...

ShivamGoyal1899

onPressed: () {
  showDialog(
    context: context,
    builder: (BuildContext context) {
      return VoicePay();
    },
  );
},

ShivamGoyal1899

import 'package:flutter/material.dart';

class VoicePay extends StatefulWidget {
  @override
  _VoicePayState createState() => _VoicePayState();
}

class _VoicePayState extends State<VoicePay> {

  @override

ShivamGoyal1899

switch (index) {
 case 0:
   return Padding(
     padding: const EdgeInsets.symmetric(horizontal: 16),
     child: _buildNameField(),
   );
 case 1:
   return Padding(
     padding: const EdgeInsets.symmetric(horizontal: 16),
     child: _buildEmailField(),

ShivamGoyal1899

SliverChildBuilderDelegate _buildSliverChildBuilderDelegate(
      AppStateModel model) {
    return SliverChildBuilderDelegate(
      (context, index) {
        switch (index) {
          case 0:
            return Padding(
              padding: const EdgeInsets.symmetric(horizontal: 16),
              child: _buildNameField(),
            );

ShivamGoyal1899

class _ShoppingCartTabState extends State<ShoppingCartTab> {
  // ...

Widget _buildDateAndTimePicker(BuildContext context) { // NEW FROM HERE
 return Column(
   children: <Widget>[
     Row(
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       children: <Widget>[
         Row(

ShivamGoyal1899

import 'package:flutter/cupertino.dart';
import 'package:intl/intl.dart';            // NEW
import 'package:scoped_model/scoped_model.dart';
import 'model/app_state_model.dart';
import 'styles.dart';                       // NEW

const double _kDateTimePickerHeight = 216;  // NEW

ShivamGoyal1899

 @override
  Widget build(BuildContext context) {
    return Consumer<AppStateModel>(
      builder: (context, model, child) {
        return CustomScrollView(
          slivers: <Widget>[
            const CupertinoSliverNavigationBar(
              largeTitle: Text('Shopping Cart'),
            ),
            SliverSafeArea(