flutter_tagging 1.0.1

A flutter package with tagging or multiselect functionality. Useful for adding Tag or Label Selection Forms.

example/lib/main.dart

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

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Tagging Demo',
      theme: ThemeData(
        primarySwatch: Colors.pink,
      ),
      home: MyHomePage(title: 'Flutter Tagging Demo'),
    );
  }
}

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

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

class _MyHomePageState extends State<MyHomePage> {
  String text = "Nothing to show";

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: SingleChildScrollView(
        child: Column(
          children: <Widget>[
            Padding(
              padding: const EdgeInsets.all(8.0),
              child: FlutterTagging(
                textFieldDecoration: InputDecoration(
                    border: OutlineInputBorder(),
                    hintText: "Tags",
                    labelText: "Enter tags"),
                addButtonWidget: _buildAddButton(),
                chipsColor: Colors.pinkAccent,
                chipsFontColor: Colors.white,
                deleteIcon: Icon(Icons.cancel,color: Colors.white),
                chipsPadding: EdgeInsets.all(2.0),
                chipsFontSize: 14.0,
                chipsSpacing: 5.0,
                chipsFontFamily: 'helvetica_neue_light',
                suggestionsCallback: (pattern) async {
                  return await TagSearchService.getSuggestions(pattern);
                },
                onChanged: (result) {
                  setState(() {
                    text = result.toString();
                  });
                },
              ),
            ),
            SizedBox(
              height: 20.0,
            ),
            Center(
              child: Text(
                text,
                style: TextStyle(color: Colors.pink),
              ),
            )
          ],
        ),
      ),
    );
  }

  Widget _buildAddButton() {
    return Container(
      padding: EdgeInsets.all(8.0),
      decoration: BoxDecoration(
        borderRadius: BorderRadius.all(Radius.circular(20.0)),
        color: Colors.pinkAccent,
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          Icon(
            Icons.add,
            color: Colors.white,
            size: 15.0,
          ),
          Text(
            "Add New Tag",
            style: TextStyle(color: Colors.white, fontSize: 14.0),
          ),
        ],
      ),
    );
  }
}

class TagSearchService {
  static Future<List> getSuggestions(String query) async {
    await Future.delayed(Duration(milliseconds: 400), null);
    List<dynamic> tagList = <dynamic>[];
    tagList.add({'name': "Flutter", 'value': 1});
    tagList.add({'name': "HummingBird", 'value': 2});
    tagList.add({'name': "Dart", 'value': 3});
    List<dynamic> filteredTagList = <dynamic>[];
    if (query.isNotEmpty) {
      filteredTagList.add({'name': query, 'value': 0});
    }
    for (var tag in tagList) {
      if (tag['name'].toLowerCase().contains(query)) {
        filteredTagList.add(tag);
      }
    }
    return filteredTagList;
  }
}