How to Make Tags Input on TextField in Flutter
Introduction
Flutter is a popular framework for building cross-platform mobile applications. When it comes to user input, Flutter provides a variety of widgets, including the TextField. However, there are instances where we need to input multiple values, such as tags or keywords, into a single TextField. In this article, we will discuss how to create a tags input on TextField in Flutter.
Creating a Tags Input Field
To create a tags input field, we need to use a combination of widgets, including the TextField and the Chip widget. The Chip widget is used to display the input tags. We will also need to manage the list of tags and update the UI accordingly.
Implementing the Tags Input Field
To implement the tags input field, we can use the following code:
“`dart
import ‘package:flutter/material.dart’;
class TagsInputField extends StatefulWidget {
@override
TagsInputFieldState createState() => TagsInputFieldState();
}
class _TagsInputFieldState extends State
final TextEditingController _controller = TextEditingController();
List
@override
Widget build(BuildContext context) {
return Column(
children: [
TextField(
controller: _controller,
decoration: InputDecoration(
border: OutlineInputBorder(),
suffixIcon: IconButton(
icon: Icon(Icons.add),
onPressed: () {
if (_controller.text.isNotEmpty) {
setState(() {
tags.add(controller.text);
_controller.clear();
});
}
},
),
),
),
Wrap(
children: _tags.map((tag) {
return Chip(
label: Text(tag),
onDelete: () {
setState(() {
_tags.remove(tag);
});
},
);
}).toList(),
),
],
);
}
}
“`
This code creates a TextField with a suffix icon that adds the input text as a tag when pressed. The tags are displayed below the TextField using the Chip widget.
Managing the Tags List
To manage the list of tags, we can use a List
Handling Tag Deletion
To handle tag deletion, we can use the onDelete property of the Chip widget. When the delete icon is pressed, we can remove the tag from the list and update the UI.
Conclusion
In this article, we have discussed how to create a tags input on TextField in Flutter. By using a combination of the TextField and Chip widgets, we can create a user-friendly tags input field that allows users to input multiple values.
FAQ
1. Q: How do I create a tags input field in Flutter?
A: To create a tags input field in Flutter, you can use a combination of the TextField and Chip widgets.
2. Q: How do I manage the list of tags in Flutter?
A: You can manage the list of tags by using a List
3. Q: How do I handle tag deletion in Flutter?
A: You can handle tag deletion by using the onDelete property of the Chip widget and removing the tag from the list when the delete icon is pressed.
4. Q: Can I customize the appearance of the tags input field in Flutter?
A: Yes, you can customize the appearance of the tags input field by using the decoration property of the TextField and the style property of the Chip widget.
5. Q: Is the tags input field in Flutter compatible with all platforms?
A: Yes, the tags input field in Flutter is compatible with all platforms, including iOS and Android.
