Overflow Fix: Wrap

Part of the Layout That Fits section of Coddy's Flutter journey. Lesson 8 of 30.

Some rows hold items that should flow like words in a sentence: tags, filters, chips. When there are too many for one line, a Row overflows on the right.

Wrap takes the same children: list, and when the next child does not fit on the line, it starts a new line under it:

Wrap(
  children: [
    for (final tag in tags) Text(tag),
  ],
)

That is the third fix for an overflow. Use Expanded when one child should shrink, a scroll view when the page is longer than the screen, and Wrap when the children should move to the next line.

A Wrap keeps each child at the size it asks for. It never squeezes them; it only moves them down.

Challenge

Easy

The tags overflow on the right. Make them flow onto as many lines as they need, like words in a paragraph.

Try it yourself

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    final tags = ['Dart', 'Flutter', 'Mobile', 'Design', 'Games', 'Web'];
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        appBar: AppBar(title: const Text('Interests')),
        body: Padding(
          padding: const EdgeInsets.all(16),
          child: Row(
            children: [
              for (final tag in tags)
                Container(
                  width: 110,
                  height: 40,
                  decoration: BoxDecoration(
                    color: Colors.purple.shade100,
                    borderRadius: BorderRadius.circular(20),
                  ),
                  child: Center(child: Text(tag)),
                ),
            ],
          ),
        ),
      ),
    );
  }
}