NewCategoryPage.dart

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


class NewCategoryPage extends StatefulWidget {
  const NewCategoryPage({Key? key}) : super(key: key);

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

class _NewCategoryPageState extends State<NewCategoryPage> {
  final _formKey = GlobalKey<FormState>();
  final _claveController = TextEditingController();
  final _nombreController = TextEditingController();
  DateTime _selectedDate = DateTime.now();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Nueva Categoría'),
        backgroundColor: Colors.blue,
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            children: [
              TextFormField(
                controller: _claveController,
                decoration: const InputDecoration(labelText: 'Clave'),
                validator: (value) {
                  if (value == null || value.isEmpty) {
                    return 'Por favor ingrese una clave';
                  }
                  return null;
                },
              ),
              TextFormField(
                controller: _nombreController,
                decoration: const InputDecoration(labelText: 'Nombre'),
                validator: (value) {
                  if (value == null || value.isEmpty) {
                    return 'Por favor ingrese un nombre';
                  }
                  return null;
                },
              ),
              const SizedBox(height: 16.0),
              TextFormField(
                readOnly: true,
                decoration: InputDecoration(
                  labelText: 'Fecha de Creación',
                  hintText: DateFormat('yyyy-MM-dd').format(_selectedDate),
                ),
                onTap: () async {
                  DateTime? pickedDate = await showDatePicker(
                    context: context,
                    initialDate: _selectedDate,
                    firstDate: DateTime(2000),
                    lastDate: DateTime(2101),
                  );
                  if (pickedDate != null && pickedDate != _selectedDate) {
                    setState(() {
                      _selectedDate = pickedDate;
                    });
                  }
                },
              ),
              const SizedBox(height: 16.0),
              ElevatedButton(
                onPressed: () {
                  if (_formKey.currentState!.validate()) {
                    int fechaCreado = _selectedDate.millisecondsSinceEpoch;
                    print({
                      "clave": _claveController.text,
                      "fechaCreado": fechaCreado,
                      "nombre": _nombreController.text
                    });
                    Navigator.pop(context);
                  }
                },
                child: const Text('GUARDAR'),
                style: ElevatedButton.styleFrom(
                  foregroundColor: Colors.white, backgroundColor: Colors.blue,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}