GitLocker: The Coding Marketplace

Description:

flutter iconpicker

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 IconPickerIcon's to the IconPicker (with the correct codePoint's and NOT Icons.camera for the data parameter!)

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.
Support #
Packs #

IconPack
Supported

Material
✅

Material Sharp
✅

Material Rounded
✅

Material Outlined
✅

Cupertino
✅

FontAwesome
✅

LineAwesome
✅

Picker-Modes #

Type
Supported

Single Icon
✅

Multiple Icons
✅

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,..>
copied to clipboard

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
copied to clipboard
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.

iconBuilder
IconWidgetBuilder
null
Builder Function to create your own Widget for each icon. WARNING: This builder provides you your own logic to handle onTap in Single and Multiple Pickers! So you as the developer are responsible for handling onTap! Also parameters like: showTooltips obviously has not effect if you create your own icon widget.

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, IconPickerIcon>
null
The customized icons that can be used instead.

preSelected
IconPickerIcon?
null
Pre-selected icon before opening the icon picker. If non-null the icon picker highlights and scrolls to the selected icon

shouldScrollToSelectedIcon
bool
true
Wether the picker should scroll to the selected icon (for bigger lists this could make sense) or not.

selectedIconBackgroundColor
Color?
Theme.of(context).brightness == Brightness.dark ? Colors.grey[800] : Colors.grey[400]
The background color for the [preSelected].

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, IconPickerIcon> 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 IconPickerIcon which is nothing else then this class for example:
IconPickerIcon(
name: 'camera',
data: Icons.camera,
pack: IconPack.material,
);
copied to clipboard

name: holds the key name like camera which is nothing else but the name of the original Icons.camera Material Icon.
data: holds the actual data used to display the icon itself. This looks like this for example:

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

pack: holds the information about which icon pack this icon belongs to! This is very important for searching and serialization purpases

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 IconPickerIcon to a Map:

IconPickerIcon to Map
serializeIcon(iconPickerIcon)
copied to clipboard
List<IconPickerIcon> to JSON List
serializeIcons(icons)
copied to clipboard

You can retreive the IconPickerIcon by passing the mapped icon:

Map to IconPickerIcon
deserializeIcon(map)
copied to clipboard
JSON List to List<IconPickerIcon>
deserializeIcons(json)
copied to clipboard
Migration-Guide when updating to >= 3.6.0 (BREAKING CHANGE) #
The IconPicker now supports IconPickerIcon? icon = await showIconPicker(... to select a single icon and List<IconPickerIcon>? icons = await showMultipleIconPicker(... to select multiple icons at once. If the multiple picker gets dismissed by any action (barrier tap or close button) the result will be the selected icons.
The parameters of your single or multiple pickers were moved to SinglePickerConfiguration for showIconPicker and MultiplePickerConfiguration for showMultipleIconPicker. Please use these configuration parameter to setup your picker now! For more see example below or have a look into the example folder.
Before 3.6.0 #
IconPickerIcon? icon = await showIconPicker(
context,
selectedIcon: Provider.of<IconNotifier>(context, listen: false).icon,
adaptiveDialog: isAdaptive,
showTooltips: showTooltips,
showSearchBar: showSearch,
iconPickerShape:
RoundedRectangleBorder(borderRadius: BorderRadius.circular(30)),
iconPackModes: IconNotifier.starterPacks,
searchComparator: (String search, IconPickerIcon icon) =>
search
.toLowerCase()
.contains(icon.name.replaceAll('_', ' ').toLowerCase()) ||
icon.name.toLowerCase().contains(search.toLowerCase()),
);
copied to clipboard
After 3.6.0 #
IconPickerIcon? icon = await showIconPicker(
context,
configuration: SinglePickerConfiguration(
preSelected: Provider.of<IconNotifier>(context, listen: false).icon,
adaptiveDialog: isAdaptive,
showTooltips: showTooltips,
showSearchBar: showSearch,
iconPickerShape:
RoundedRectangleBorder(borderRadius: BorderRadius.circular(30)),
iconPackModes: IconNotifier.starterPacks,
searchComparator: (String search, IconPickerIcon icon) =>
search
.toLowerCase()
.contains(icon.name.replaceAll('_', ' ').toLowerCase()) ||
icon.name.toLowerCase().contains(search.toLowerCase()),
),
);
copied to clipboard
Migration-Guide when updating to >= 3.3.1 (BREAKING CHANGE) #
The IconPicker is now called via IconPickerIcon? icon = await showIconPicker(... and not anymore like: IconPickerIcon? icon = await 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 ⚠
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 {
IconPickerIcon? icon = await showIconPicker(
context,
configuration: SinglePickerConfiguration(
iconPackModes: [IconPack.cupertino],
),
);

_icon = Icon(icon.data);
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(),
),
],
),
),
);
}
}

copied to clipboard
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.
copied to clipboard
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,..>
copied to clipboard

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
copied to clipboard
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.