Wholde Widget Rebuild after using Textediting controller

[Dareboy Dareboy]

i have attached file

after selecting dropdown value, and then select date from datepicker, then when i once again select dropdown button, it will not work.

Is something i missed ?

[Souvik Dutta]

Can you copy and paste the code from main.dart instead of attaching it?

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[Dareboy Dareboy]

import 'package:dropdowonsample/contacts.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

void main() {
  runApp(
    MultiProvider(
      providers: [
        ChangeNotifierProvider.value(
          value: ContactService(),
        ),
      ],
      child: MyApp(),
    ),
  );
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  List<Contacts> finalList = [];
  final _controllerStartDate  = TextEditingController();

  @override
  void dispose() {
    finalList.clear();
  }

  Widget _createDropDownButton(List<Contacts> _cont, BuildContext context) {
    return Consumer<ContactService>(builder: (ctx, d, ch) {
      return DropdownButton(
        key: GlobalKey(),
        value: d.getSelectedValue(), // _selectedValue,
        items: _cont
            .map(
              (e) => DropdownMenuItem(
                value: e.id,
                child: Text(e.name),
                onTap: () {},
              ),
            )
            .toList(),
        onChanged: (value) {
          Provider.of<ContactService>(context, listen: false)
              .setIsSelected(value);
        },
      );
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Consumer<ContactService>(
              builder: (ctx, d, ch) {
                return Text(
                  d.getSelectedValue() == null ? "hello" : d.getSelectedValue(),
                  style: Theme.of(context).textTheme.headline4,
                );
              },
            ),
            FutureBuilder(
              future: Provider.of<ContactService>(context, listen: false)
                  .getPlans(),
              builder: (context, snapshot) {
                if (snapshot.connectionState == ConnectionState.done) {
                  return _createDropDownButton(snapshot.data,
                      context); // Text(snapshot.data.length.toString());
                } else {
                  return Text("Waiting");
                }
              },
            ),
            TextFormField(
              key: GlobalKey(),
              controller: _controllerStartDate,
              decoration: InputDecoration(
                labelText: "Enter Start Date :",
              ),
              onTap: () async {
                DateTime date = DateTime(1900);
                FocusScope.of(context).requestFocus(new FocusNode());
                date = await showDatePicker(
                    context: context,
                    initialDate: DateTime.now(),
                    firstDate: DateTime(1900),
                    lastDate: DateTime(2100));
                _controllerStartDate.text = date.toIso8601String();
              },
            ),
          ],
        ),
      ),
    );
  }
}

[Souvik Dutta]

Insert your text editing controller into the dispose method.  Just add this inside your controller.

_controllerStartDate.dispose();

super.dispose();

And see this solves your problem.

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[Souvik Dutta]

Okay sorry don't add inside controller but add those lines inside dispose method

[Suzuki Tomohiro]

> it will not work

Can you create a short video in Youtube to explain what is unexpected behavior to you?

On Fri, May 22, 2020 at 5:46 AM Dareboy Dareboy <dareb...@gmail.com> wrote:

Here is the Code

--------------------------------------

Tejas Kishanwala

On Thursday, 21 May 2020 16:17:01 UTC+5:30, Souvik Dutta wrote:

Can you copy and paste the code from main.dart instead of attaching it?

On Thu, 21 May, 2020, 3:04 pm Dareboy Dareboy, <dareb...@gmail.com> wrote:

i have attached file

after selecting dropdown value, and then select date from datepicker, then when i once again select dropdown button, it will not work.

Is something i missed ?

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[Dareboy Dareboy]

please find link for the youtube video

https://youtu.be/2grL7B9d_k4

Tejas Kishanwala

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[Suzuki Tomohiro]

Would you try making this future as a field of the state?

Provider.of<ContactService>(context,listen: false)
                  .getPlans()

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