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Flutter Tips

Code samples and useful tips for day-to-day Flutter app development.

Flutter Tips

How to Create DartPad Examples from GitHub Gists

#dart
#flutter

DartPad makes it easy to share your Dart & Flutter samples using GitHub gists, and you can even embed them on your website. Here's how.

How to Add a Custom Test Timeout in Flutter

#dart
#flutter
#testing

When a test waits for a stream value that is never emitted, it will timeout after 30 seconds (by default). Here's how to make it fail fast with a custom timeout.

How to Use Super Initializers in Dart 2.17

#dart
#flutter

Since Dart 2.17, you can initialize parameters of the super class with a new shorthand syntax. Here's how.

How to Use Enhanced Enums with Members in Dart 2.17

#dart
#flutter

Since Dart 2.17, we can add members and additional methods when declaring an enum. Here's how.

How to test functions that throw in Flutter

#dart
#flutter
#testing

When writing tests for functions that throw, we should not invoke them directly, but rather pass them as arguments using a tear-off.

How to update a Map of key-value pairs in Dart

#dart
#flutter

Ever needed to update a value if a given key already exists, or set it if it doesn't? Here's how to use the Map.update() method to solve this.

Use AsyncValue.guard rather than try/catch inside your StateNotifier subclasses

#dart
#flutter
#riverpod

If you have many StateNotifier subclasses, using try/catch can be tedious. With AsyncValue.guard you get the same result with less boilerplate.

How to replace SizedBox with compile-time constants for better performance

#dart
#flutter
#layouts

A useful tip to write more performant code when using SizedBox as a gap between widgets inside a Row or Column layout.

How to speed-up Cloud Firestore Xcode builds on your Flutter apps

#flutter
#firebase
#devops

How to use the precompiled Firestore iOS SDKs to speed-up Xcode builds on your Flutter apps.

How to style an ElevatedButton in Flutter

#dart
#flutter

How to style an ElevatedButton in Flutter, including reusing the same style across all buttons with ThemeData.

How to quickly generate some fake data when building Flutter UIs

#dart
#flutter

The faker package lets you generate addresses, names, food, dates, sports... you name it! Here's how to use it.

How to add Rounded Borders to a Widget in Flutter

#dart
#flutter

In Flutter you can use DecoratedBox to set a lot of decoration/styling options to your widgets. Here's how.

How to disable the default Widget splash effect in Flutter

#flutter
#dart

Many Material widgets such as InkWell, ElevatedButton, and ListTile show a splash effect when selected. Here's how to disable this.

How to speed up code generation with build_runner in Dart & Flutter

#flutter
#dart
#code-generation
#freezed

Two effective techniques for reducing code generation times for Flutter apps that use build_runner.

Dart & Flutter Easy Wins 36-42

#flutter
#dart

Easy ways to improve your Dart & Flutter code. Published weekly.

Dart & Flutter Easy Wins 29-35

#flutter
#dart

Easy ways to improve your Dart & Flutter code. Published weekly.

Dart & Flutter Easy Wins 22-28

#flutter
#dart

Easy ways to improve your Dart & Flutter code. Published weekly.

Dart & Flutter Easy Wins 15-21

#flutter
#dart

Easy ways to improve your Dart & Flutter code. Published weekly.

Dart & Flutter Easy Wins 8-14

#flutter
#dart

Easy ways to improve your Dart & Flutter code. Published weekly.

Dart & Flutter Easy Wins 1-7

#flutter
#dart

Easy ways to improve your Dart & Flutter code. Published weekly.

Hide your Firebase config with .gitignore in Flutter web projects

#flutter
#dart
#firebase
#flutter-web
#git

A useful tip to hide your Firebase config from git in your Flutter web projects.

Easily move the focus between TextFormFields with FocusScopeNode

#flutter
#dart

FocusScopeNode provides a simpler way of move the focus between text fields in your Flutter forms.

Using underscores for unused builder arguments in Dart

#flutter
#dart
#design-patterns

How to remove some noise in your Dart code by using underscores for unused function arguments.

Adding top and bottom separators with ListView.separated

#flutter
#dart
#layouts

How to make your ListViews feel native on iOS by adding top and bottom separators.

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