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Post #90

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Series: First few Flutter posts

Flutter Jour Trois

Wednesday, 19 August 2020 09:53:34 by Khodok

6 min read

Flutter application Dépenses personnelles

Disclaimer: This post is in French because it’s for French talking people, but when I’ll add multiple language this will be used in the French version and the English will be in the English version.

Point Trois

Fin du point trois !

Le Fichier main.dart P3

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/// main.dart

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

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Dépenses personnelles',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  final titleController = TextEditingController();
  final amountController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Dépenses personnelles'),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.start,
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: <Widget>[
          Card(
            child: Text('GRAPHIQUES'),
            color: Colors.blue,
          ),
          Card(
            child: UserTransaction(),
          ),
        ],
      ),
    );
  }
}

Le Fichier user_transaction.dart P3

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/// ./widgets/user_transaction.dart

import 'package:flutter/material.dart';

import '../models/transaction.dart';

import './new_transaction.dart';
import './transaction_list.dart';

class UserTransaction extends StatefulWidget {
  @override
  _UserTransactionState createState() => _UserTransactionState();
}

class _UserTransactionState extends State<UserTransaction> {
  final List<Transaction> _userTransactions = [
    Transaction(
      id: 't1',
      title: 'Chaussures',
      amount: 169.99,
      date: DateTime.now(),
    ),
    Transaction(
      id: 't2',
      title: 'Courses',
      amount: 128.50,
      date: DateTime.now(),
    ),
  ];

  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        NewTransaction(),
        TransactionList(_userTransactions),
      ],
    );
  }
}

Le Fichier new_transaction.dart P3

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/// ./widgets/new_transaction.dart

import 'package:flutter/material.dart';

class NewTransaction extends StatelessWidget {
  final titleController = TextEditingController();
  final amountController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Card(
      child: Container(
        padding: EdgeInsets.all(10),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.end,
          children: <Widget>[
            TextField(
              decoration: InputDecoration(
                labelText: 'Titre',
              ),
              controller: titleController,
            ),
            TextField(
              decoration: InputDecoration(
                labelText: 'Montant',
              ),
              controller: amountController,
            ),
            FlatButton(
              child: Text(
                'Ajouter la Transaction',
              ),
              textColor: Colors.purple,
              onPressed: () {
                print(titleController.text);
                print(amountController.text);
              },
            ),
          ],
        ),
      ),
    );
  }
}

Le Fichier transaction_list.dart P3

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/// ./widgets/transaction_list.dart

import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

import '../models/transaction.dart';

class TransactionList extends StatelessWidget {
  final List<Transaction> transactions;
  TransactionList(this.transactions);

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
        children: transactions.map((transaction) {
          return Card(
            child: Row(
              children: <Widget>[
                Container(
                  margin: EdgeInsets.symmetric(
                    vertical: 10,
                    horizontal: 15,
                  ),
                  decoration: BoxDecoration(
                    border: Border.all(
                      color: Colors.purple,
                      width: 2,
                    ),
                  ),
                  padding: EdgeInsets.all(10),
                  child: Text(
                    '\$: ${transaction.amount}'.toString(),
                    style: TextStyle(
                      fontWeight: FontWeight.bold,
                      fontSize: 20,
                      color: Colors.purple,
                    ),
                  ),
                ),
                Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Text(
                      transaction.title,
                      style: TextStyle(
                        fontWeight: FontWeight.bold,
                        fontSize: 16,
                      ),
                    ),
                    Text(
                      DateFormat('dd MMM yyyy').format(transaction.date),
                      style: TextStyle(
                        color: Colors.grey,
                      ),
                    ),
                  ],
                ),
              ],
            ),
          );
        }).toList(),
      ),
    );
  }
}

Le fichier transaction.dart (model de transaction) P3

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/// ./models/transaction.dart

import 'package:flutter/foundation.dart';

class Transaction {
  final String id;
  final String title;
  final double amount;
  final DateTime date;

  Transaction({
    @required this.id,
    @required this.title,
    @required this.amount,
    @required this.date,
  });
}
Point Quatre

Point Quatre

Le Fichier main.dart P4

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/// main.dart

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

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Dépenses personnelles',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  final titleController = TextEditingController();
  final amountController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Dépenses personnelles'),
      ),
      body: SingleChildScrollView(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: <Widget>[
            Card(
              child: Text('GRAPHIQUES'),
              color: Colors.blue,
            ),
            Card(
              child: UserTransaction(),
            ),
          ],
        ),
      ),
    );
  }
}

Le Fichier user_transaction.dart P4

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/// ./widgets/user_transaction.dart

import 'package:flutter/material.dart';

import '../models/transaction.dart';

import './new_transaction.dart';
import './transaction_list.dart';

class UserTransaction extends StatefulWidget {
  @override
  _UserTransactionState createState() => _UserTransactionState();
}

class _UserTransactionState extends State<UserTransaction> {
  final List<Transaction> _userTransactions = [
    Transaction(
      id: 't1',
      title: 'Chaussures',
      amount: 169.99,
      date: DateTime.now(),
    ),
    Transaction(
      id: 't2',
      title: 'Courses',
      amount: 128.50,
      date: DateTime.now(),
    ),
  ];

  void _addNewTransaction(String newTitle, double newAmount) {
    final newTransaction = Transaction(
        title: newTitle,
        amount: newAmount,
        date: DateTime.now(),
        id: DateTime.now().toString());

    setState(() {
      _userTransactions.add(newTransaction);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        NewTransaction(_addNewTransaction),
        TransactionList(_userTransactions),
      ],
    );
  }
}

Le Fichier new_transaction.dart P4

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/// ./widgets/new_transaction.dart

import 'package:flutter/material.dart';

class NewTransaction extends StatelessWidget {
  final Function addNewTransaction;

  NewTransaction(this.addNewTransaction);

  final titleController = TextEditingController();
  final amountController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Card(
      child: Container(
        padding: EdgeInsets.all(10),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.end,
          children: <Widget>[
            TextField(
              decoration: InputDecoration(
                labelText: 'Titre',
              ),
              controller: titleController,
            ),
            TextField(
              decoration: InputDecoration(
                labelText: 'Montant',
              ),
              controller: amountController,
            ),
            FlatButton(
              child: Text(
                'Ajouter la Transaction',
              ),
              textColor: Colors.purple,
              onPressed: () {
                addNewTransaction(
                  titleController.text,
                  double.parse(amountController.text),
                );
              },
            ),
          ],
        ),
      ),
    );
  }
}

Le Fichier transaction_list.dart P4

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/// ./widgets/transaction_list.dart

import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

import '../models/transaction.dart';

class TransactionList extends StatelessWidget {
  final List<Transaction> transactions;
  TransactionList(this.transactions);

  @override
  Widget build(BuildContext context) {
    return Container(
      height: 300,
      child: ListView.builder(
        itemBuilder: (context, index) {
          return Card(
            child: Row(
              children: <Widget>[
                Container(
                  margin: EdgeInsets.symmetric(
                    vertical: 10,
                    horizontal: 15,
                  ),
                  decoration: BoxDecoration(
                    border: Border.all(
                      color: Colors.purple,
                      width: 2,
                    ),
                  ),
                  padding: EdgeInsets.all(10),
                  child: Text(
                    '\$: ${transactions[index].amount}'.toString(),
                    style: TextStyle(
                      fontWeight: FontWeight.bold,
                      fontSize: 20,
                      color: Colors.purple,
                    ),
                  ),
                ),
                Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Text(
                      transactions[index].title,
                      style: TextStyle(
                        fontWeight: FontWeight.bold,
                        fontSize: 16,
                      ),
                    ),
                    Text(
                      DateFormat('dd MMM yyyy')
                          .format(transactions[index].date),
                      style: TextStyle(
                        color: Colors.grey,
                      ),
                    ),
                  ],
                ),
              ],
            ),
          );
        },
        itemCount: transactions.length,
      ),
    );
  }
}

Le fichier transaction.dart (model de transaction) P4

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/// ./models/transaction.dart

import 'package:flutter/foundation.dart';

class Transaction {
  final String id;
  final String title;
  final double amount;
  final DateTime date;

  Transaction({
    @required this.id,
    @required this.title,
    @required this.amount,
    @required this.date,
  });
}
Point Dix

Point Dix

Le Fichier main.dart P10

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/// main.dart

import 'package:depenses/widgets/transaction_list.dart';
import 'package:flutter/material.dart';

import './models/transaction.dart';

import './widgets/new_transaction.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Dépenses personnelles',
      theme: ThemeData(
        primarySwatch: Colors.purple,
        accentColor: Colors.amber,
        fontFamily: 'Quicksand',
        appBarTheme: AppBarTheme(
          textTheme: ThemeData.light().textTheme.copyWith(
                title: TextStyle(
                  fontFamily: 'OpenSans',
                  fontWeight: FontWeight.bold,
                  fontSize: 18,
                ),
              ),
        ),
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final titleController = TextEditingController();
  final amountController = TextEditingController();

  final List<Transaction> _userTransactions = [
    Transaction(
      id: 't1',
      title: 'Chaussures',
      amount: 169.99,
      date: DateTime.now(),
    ),
    Transaction(
      id: 't2',
      title: 'Courses',
      amount: 128.50,
      date: DateTime.now(),
    ),
  ];

  void _addNewTransaction(String newTitle, double newAmount) {
    final newTransaction = Transaction(
        title: newTitle,
        amount: newAmount,
        date: DateTime.now(),
        id: DateTime.now().toString());

    setState(() {
      _userTransactions.add(newTransaction);
    });
  }

  void _startAddNewTransaction(BuildContext context) {
    showModalBottomSheet(
        context: context,
        builder: (_) {
          return NewTransaction(_addNewTransaction);
        });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Dépenses personnelles'),
        actions: <Widget>[
          IconButton(
            icon: Icon(Icons.add),
            onPressed: () => _startAddNewTransaction(context),
          ),
        ],
      ),
      body: SingleChildScrollView(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: <Widget>[
            Card(
              child: Text('GRAPHIQUES'),
              color: Colors.blue,
            ),
            TransactionList(_userTransactions),
          ],
        ),
      ),
      floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
      floatingActionButton: FloatingActionButton(
        child: Icon(
          Icons.add,
        ),
        onPressed: () => _startAddNewTransaction(context),
      ),
    );
  }
}

Le Fichier user_transaction.dart P10

SUPPRIMÉ

Le Fichier new_transaction.dart P10

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/// ./widgets/new_transaction.dart

import 'package:flutter/material.dart';

class NewTransaction extends StatefulWidget {
  final Function addNewTransaction;

  NewTransaction(this.addNewTransaction);

  @override
  _NewTransactionState createState() => _NewTransactionState();
}

class _NewTransactionState extends State<NewTransaction> {
  final titleController = TextEditingController();

  final amountController = TextEditingController();

  void submitData() {
    final enteredTitle = titleController.text;
    final enteredAmount = double.parse(amountController.text);

    if (enteredTitle.isEmpty || enteredAmount <= 0) {
      return;
    }

    widget.addNewTransaction(
      enteredTitle,
      enteredAmount,
    );

    Navigator.of(context).pop();
  }

  @override
  Widget build(BuildContext context) {
    return Card(
      child: Container(
        padding: EdgeInsets.all(10),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.end,
          children: <Widget>[
            TextField(
              decoration: InputDecoration(
                labelText: 'Titre',
              ),
              controller: titleController,
              onSubmitted: (_) => submitData(),
            ),
            TextField(
              decoration: InputDecoration(
                labelText: 'Montant',
              ),
              controller: amountController,
              keyboardType: TextInputType.number,
              onSubmitted: (_) => submitData(),
            ),
            FlatButton(
              child: Text(
                'Ajouter la Transaction',
              ),
              textColor: Colors.purple,
              onPressed: submitData,
            ),
          ],
        ),
      ),
    );
  }
}

Le Fichier transaction_list.dart P10

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/// ./widgets/transaction_list.dart

import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

import '../models/transaction.dart';

class TransactionList extends StatelessWidget {
  final List<Transaction> transactions;
  TransactionList(this.transactions);

  @override
  Widget build(BuildContext context) {
    return Container(
      height: 300,
      child: ListView.builder(
        itemBuilder: (context, index) {
          return Card(
            child: Row(
              children: <Widget>[
                Container(
                  margin: EdgeInsets.symmetric(
                    vertical: 10,
                    horizontal: 15,
                  ),
                  decoration: BoxDecoration(
                    border: Border.all(
                      color: Colors.purple,
                      width: 2,
                    ),
                  ),
                  padding: EdgeInsets.all(10),
                  child: Text(
                    '\$: ${transactions[index].amount.toStringAsFixed(2)}',
                    style: TextStyle(
                      fontWeight: FontWeight.bold,
                      fontSize: 20,
                      color: Colors.purple,
                    ),
                  ),
                ),
                Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Text(
                      transactions[index].title,
                      style: Theme.of(context).textTheme.title,
                    ),
                    Text(
                      DateFormat('dd MMM yyyy')
                          .format(transactions[index].date),
                      style: TextStyle(
                        color: Colors.grey,
                      ),
                    ),
                  ],
                ),
              ],
            ),
          );
        },
        itemCount: transactions.length,
      ),
    );
  }
}

Le fichier transaction.dart (model de transaction) P10

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/// ./models/transaction.dart

import 'package:flutter/foundation.dart';

class Transaction {
  final String id;
  final String title;
  final double amount;
  final DateTime date;

  Transaction({
    @required this.id,
    @required this.title,
    @required this.amount,
    @required this.date,
  });
}
  • Ajout des graphs après ça (Prochain Post sur Flutter probablement)
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