flutter_provider_demo/lib/pages/addpage_page.dart

import 'package:flutter/material.dart';
import 'package:flutter_provider_demo/model/car_model.dart';
import 'package:flutter_provider_demo/provider/car_provider.dart';
import 'package:provider/provider.dart';

/// Description: add cars
/// Time       : 09/04/2023 Monday
/// Author     : liuyuqi.gov@msn.cn
class AddcardPage extends StatefulWidget {
  const AddcardPage({super.key});

  @override
  State<AddcardPage> createState() => _AddcardPageState();
}

class _AddcardPageState extends State<AddcardPage> {
  final carBrandController = TextEditingController();
  final carTypeController = TextEditingController();
  bool started = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        actions: const [],
        title: const Text("增加车辆"),
      ),
      body: ListView(children: [
        Padding(
          padding: const EdgeInsets.all(25),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              TextField(
                controller: carBrandController,
              ),
              TextField(
                controller: carTypeController,
              ),
              CheckboxListTile(
                value: started,
                onChanged: (checked) {
                  setState(() {
                    started = checked ?? false;
                  });
                },
                title: const Text('Start ?'),
              ),
              ElevatedButton(
                onPressed: () {
                  addCar(1);
                },
                style: ElevatedButton.styleFrom(
                    backgroundColor: Colors.blue,
                    textStyle: const TextStyle(fontSize: 20)),
                child: const Text('Add'),
              ),
            ],
          ),
        )
      ]),
    );
  }

  @override
  void dispose() {
    super.dispose();
    carBrandController.dispose();
  }

  /// add car
  void addCar(int id) {
    if (carBrandController.text.isNotEmpty &&
        carTypeController.text.isNotEmpty) {
      final CarModel car = CarModel(
          id: id,
          brand: carBrandController.text,
          type: carTypeController.text,
          start: started);
      Provider.of<CarProvider>(context, listen: false).addCar(car);
      Navigator.pop(context);
    }
  }
}