FlutterIconPicker

This package provides an IconPicker with supported (or custom provided) Icons which can be picked through an AlertDialog. All Icons are mapped with its names in the IconData. This is necessary to make it possible to search through the icons. Fulltextsearch including a note if no results where found.

Disclaimer (Important)

This package is maintained regularly, is stable and is used in production by many software solutions out there (Thank you all at this point 🙏).

However, it is not guaranteed that all icons are displayed correctly -> why? -> flutter framework is constantly changing codePoint's for example for Icons.camera. So if you develop an app which uses an older flutter version and flutter_iconpicker version, you're good to go, but if you want to update your app and flutter version, the codePoint's could be broken and not matching to Icons.camera for example anymore!

So what can we do?:

Simply use custom icons by providing a list of IconData's to the IconPicker (with the correct codePoint's and NOT Icons.camera!)

Good: 'camera': IconData(0xe3af, fontFamily: 'MaterialIcons')

Bad: 'camera': Icons.camera

For example if you want to provide material icons, copy the actual icons from here: icons.dart and provide them to the IconPicker as custom icons.

Supported IconPacks

IconPack	Supported
Material	✅
Material Sharp	✅
Material Rounded	✅
Material Outlined	✅
Cupertino	✅
FontAwesome	✅
LineAwesome	✅

Usage

To use this package, add flutter_iconpicker as a dependency in your pubspec.yaml file.

Before Getting Started (Important)

IconPacks are very large in size and are generated on demand by you as the developer to always keep your app size as small as possible!

To generate the IconPacks you need, just execute following command:

dart run flutter_iconpicker:generate_packs --packs <material,cupertino,..>

Replace <material,cupertino,..> with the IconPack names you want! E.g. --packs material,cupertino (comma separated!)

For the complete list of available pack names see: Available IconPacks (only those with path!)

For more see:

dart run flutter_iconpicker:generate_packs --help

This dart cli program generates all IconPacks you need.

If you tend to change your IconPacks, you always have to re-run that command!

To make it easier you can setup this command easily as a pre-script running before launching your flutter app (For info on this if you use VSCode have a look at: https://code.visualstudio.com/docs/editor/tasks). This automates your development workcycle and for building release apps, just run that dart script before building.

Building

If you build your app it may fail because of this package. #TreeShakeIcons

To be able to build your app, add to your build command the flag: --no-tree-shake-icons and you should be good to go!

For more see: flutter/flutter#16311

API-Reference

Parameter	Type	Default	Short description
context (only required)	`BuildContext`	`-`	Required due to `AlertDialog`'s base.
adaptiveDialog	`bool`	`false`	If `true`, IconPicker will adapt depending on the screen size. If `false`, IconPicker will show itself inside an AlertDialog.
barrierDismissible	`bool`	`true`	Defines if the user can dismiss the dialog by tapping on the outside barrier.
iconSize	`double`	`40.0`	Defines the size for the all icons, that can be picked.
iconColor	`Color`	`Theme.of(context).iconTheme.color`	Set the color for the all icons, that can be picked.
mainAxisSpacing	`double`	`5.0`	How much space to place between children in a run in the main axis.
crossAxisSpacing	`double`	`5.0`	How much space to place between children in a run in the cross axis.
iconPickerShape	`ShapeBorder`	`RoundedRectangleBorder(borderRadius: BorderRadius.circular(5.0))`	The dialogs shape for the picker.
backgroundColor	`Color`	`Theme.of(context).dialogBackgroundColor`	The color for the AlertDialog's background color.
constraints	`BoxConstraints`	If `adaptiveDialog` == `true` then it's default is: `BoxConstraints(maxHeight: 500, minWidth: 450, maxWidth: 720)`, otherwise: `BoxConstraints(maxHeight: 350, minWidth: 450, maxWidth: 678)`.	The dialogs `BoxConstraints` for limiting/setting: `maxHeight`, `maxWidth`, `minHeight` and `minWidth`.
title	`Widget`	`Text('Pick an icon')`	The title for the Picker. Sits above the [SearchBar] and [Icons].
closeChild	`Widget`	`Text('Close',textScaleFactor: 1.25,)`	The content for the `AlertDialog`'s action `FlatButton` which closes the default dialog.
searchIcon	`Icon`	`Icon(Icons.search)`	Sets the prefix icon in the [SearchBar]
searchHintText	`String`	`'Search'`	Sets the `hintText` in the `TextField` of [SearchBar]
searchClearIcon	`Icon`	`Icon(Icons.close)`	Sets the suffix icon in the [SearchBar]
searchComparator	`SearchComparator`	`(String searchValue, IconPickerIcon icon) => icon.name.toLowerCase().contains(searchValue.toLowerCase())`	The [searchComparator] can be used to define a custom search function which should return a [bool]
noResultsText	`String`	`'No results for:'`	The text to show when no results where found for the search term.
showTooltips	`bool`	`false`	Shows the labels underneeth the proper icon.
showSearchBar	`bool`	`true`	Shows the search bar above the icons if `true`
iconPackModes	`List<IconPack>`	`const <IconPack>[IconPack.material]`	The modes which Icons to show.
customIconPack	`Map<String, IconData>`	`null`	The customized icons that can be used instead.

IconPackMode

You can select the wished IconPacks through the argument: iconPackModes. This defaults to const <IconPack>[IconPack.material]. For further usage have a look in the example.

You own Icons

If you don't want to use the default IconPacks, you can also provide your own IconPack by creating a Map<String, IconData> with the names of your icons and the specific IconData. Just pass it to customIconPack and set the iconPackMode: IconPack.custom.

Result of IconPicker and further usage (saving and retreiving)

The picker is returning (as shown in the example method _pickIcon() underneeth) an IconData which is nothing else then this class for example:

  IconData(0xe3af, fontFamily: 'MaterialIcons');    // Icons.camera

that's representing an Material icon.

So if you plan to save the picked icon anywhere (sqflite, firebase, etc.), you can use the serialization methods:

Call this to convert the picked IconData to a Map:

IconData to Map

  serializeIcon(iconData)

You can retreive the IconData by passing the mapped IconData:

Map to IconData

  deserializeIcon(map)

Migration-Guide when updating to >= 3.3.1 (BREAKING CHANGE)

The IconPicker is now called via IconData? icon = await showIconPicker(... and not anymore like: IconData? icon = await FlutterIconPicker.showIconPicker(.... Please update your code accordingly!

Material icons are now separated into:

Default -> only normal icons (without Sharp, Rounded, Outlined)
All -> All Material Icons (including Sharp, Rounded, Outlined)
Sharp -> Only Sharp Material Icons
Rounded -> Only Rounded Material Icons
Outlined -> Only Outlined Material Icons

⚠ Use IconPack.allMaterial instead, if you still want to display all Material Icons. The old enum value was: IconPack.material ⚠

If you work with Material Icons please always pass the corresponding IconPack via the optional parameter when serializing:

serializeIcon(_iconData, iconPack: IconPack.allMaterial);
    
...
    
deserializeIcon(
  Map<String, dynamic>.from(await box.get('iconData')),
  iconPack: IconPack.allMaterial,
);

If you display directly using serializeIcon function, als consider it:

Text(
  'Database Entry:\n${serializeIcon(_iconData, iconPack: IconPack.allMaterial).toString()}',
),

Example

If you're looking for a complete example with DB storage, jump in here: ExampleProject

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(),
            ),
          ],
        ),
      ),
    );
  }
}

Troubleshooting

Problem:

This application cannot tree shake icons fonts. It has non-constant instances of IconData at the following locations:
  - file:///C:/Users/You/Development/FlutterIconPicker/lib/Serialization/iconDataSerialization.dart:127:16
Target web_release_bundle failed: Exception: Avoid non-constant invocations of IconData or try to build again with --no-tree-shake-icons.

Solution:

Add to your build command: --no-tree-shake-icons.

--

Problem:

My selected IconPacks are not displayed when I set the iconPackModes: [...]!

Solution:

IconPacks are very large in size and are generated on demand by you as the developer to always keep your app size as small as possible!

To generate the IconPacks you need, just execute following command:

dart run flutter_iconpicker:generate_packs --packs <material,cupertino,..>

Replace <material,cupertino,..> with the IconPack names you want! E.g. --packs material,cupertino (comma separated!)

For the complete list of available pack names see: Available IconPacks (only those with path!)

For more see:

dart run flutter_iconpicker:generate_packs --help

This dart cli program generates all IconPacks you need.

If you tend to change your IconPacks, you always have to re-run that command!

To make it easier you can setup this command easily as a pre-script running before launching your flutter app (For info on this if you use VSCode have a look at: https://code.visualstudio.com/docs/editor/tasks). This automates your development workcycle and for building release apps, just run that dart script before building.

License

MathGaps/FlutterIconPicker

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