I am trying to add a Future ( Selecting Icon ) so I have used this package:

import 'package:flutter_iconpicker/flutter_iconpicker.dart';

I used this as the source pub.dev even in a new project this code

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

void main() {
  runApp(
    const MaterialApp(
      home: HomeScreen(),
    ),
  );
}

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

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

class _HomeScreenState extends State<HomeScreen> {
  Icon? _icon;

  _pickIcon() async {
    IconData? icon = await FlutterIconPicker.showIconPicker(context,
        iconPackModes: [IconPack.cupertino]);

    _icon = Icon(icon);
    setState(() {});

    debugPrint('Picked Icon:  $icon');
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: <Widget>[
            ElevatedButton(
              onPressed: _pickIcon,
              child: const Text('Open IconPicker'),
            ),
            const SizedBox(height: 10),
            AnimatedSwitcher(
              duration: const Duration(milliseconds: 300),
              child: _icon ?? Container(),
            ),
          ],
        ),
      ),
    );
  }
}

and it shows these errors:

/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_iconpicker-3.1.4 1/lib/IconPicker/Packs/Material.dart:1230:25: Error: Member not found: 'class__sharp'.
  'class__sharp': Icons.class__sharp,
                        ^^^^^^^^^^^^
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_iconpicker-3.1.4 1/lib/IconPicker/Packs/Material.dart:1231:27: Error: Member not found: 'class__rounded'.
  'class__rounded': Icons.class__rounded,
                          ^^^^^^^^^^^^^^
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_iconpicker-3.1.4 1/lib/IconPicker/Packs/Material.dart:1232:28: Error: Member not found: 'class__outlined'.
  'class__outlined': Icons.class__outlined,
                           ^^^^^^^^^^^^^^^
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_iconpicker-3.1.4 1/lib/IconPicker/iconPicker.dart:47:20: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.

- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/binding.dart').
package:flutter/…/widgets/binding.dart:1
    WidgetsBinding.instance!.addPostFrameCallback((_) {
                   ^
3

FAILURE: Build failed with an exception.

* Where:
Script 'C:\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1156

* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\src\flutter\bin\flutter.bat'' finished with non-zero exit value 1

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 11s
Exception: Gradle task assembleDebug failed with exit code 1

Even if it will not show anything on the emulator the above code is the example of the source that I mentioned above and it was not working and I went according to the instructions that he describes in section (installing) and still not working, Does anyone have a solution to this problem?

CodePudding user response：

Seems the plugin needs to be upgraded!

Solution:If you don't use/need those three icons you can remove/comment those three icons from you local c drive path shown in error.

And add null check operator (!) to the error line shown in error.

Note: Making local changes in plugin will make app run in your end,if you share code they needs to do the above step to run the app

Thanks!!

CodePudding user response：

This is a known issue with flutter_iconpicker and the new Flutter version 3.0.

There is an open issue with a workaround in the official repository issues