Here is how you add and use linters in your Flutter app to enhance and maintain higher code quality. — With linters and linting rules, you can verify clean code principles and maintain high code quality during the development process of your Flutter app. A linter is a tool that analyzes source code to detect and report potential errors or issues. When you use a code editor like VSCode or…

Get smoother scrolling and animations, less memory consumption, and more execution speed with these performance tips for Flutter apps. — Here are some easy-to-use best practices for Flutter apps when it’s all about performance. Use them if you notice any problems but don’t optimize prematurely. Flutter apps are fast by default and you won’t have any trouble usually. Also, make sure to download my free ebook about Flutter performance tips…

Instead of writing code yourself, you can always use generators to create Dart model classes from JSON. Here are the results of my evaluation of some free tools for you. — For this test, I created a sample JSON structure that all tools need to deal with. You can find it below: Every converter will receive the same input and I’ll examine the created output. Is it runnable? Is null-safety supported? Is the code efficient? Is anything missing? Have a…

Learn how easy it is to add Firebase to your Flutter app now. It was quite the hassle before. — Before this summer, the Google I/O conference took place and there was exciting news about Firebase and Flutter. It is now way easier to integrate Firebase in Flutter apps because the developers redesigned the whole process and automated some cumbersome steps. To be fair, this was also available before but…

This article is all about the possibilities of mocking that the Mockito package provides. We’ll look into setting up mocks, verifying the calls, and pitfalls to avoid. — I recently published an article about mocking in unit tests with the Mockito package in Flutter apps. How to Mock Dependencies in your Flutter app for Testing Here is a tutorial on how to create mocks with the mockito package, set them up, and use them in your tests of a…levelup.gitconnected.com

Using Firebase Cloud Messaging and Firebase Cloud Functions we can implement a system to send and receive push notifications from a Flutter app. — Today we are going to focus on how to send push notifications from a Flutter app. Therefore Firebase will be used as it provides packages that can be used within a Flutter app. In this scenario, a push notification will be triggered and sent to your own device. Firebase offers some…

Here is a short guide about how to visualize code coverage of a Flutter app in Visual Studio Code. — Today I want to show you how you can measure your code coverage and see the covered and uncovered lines in your Flutter app. We are going to use Visual Studio Code and two free extensions from the Visual Studio Marketplace: Flutter Coverage

A ready-to-use and working build pipeline for Azure DevOps to build Flutter apps for iOS, Android, and Windows. — Here is a working pipeline for Azure DevOps to build Flutter apps with the most recent SDK version for iOS, Android, and Windows alongside an integration and configuration guide. It will produce an Android App bundle…