Sidekick CLIs allow you to automate repetitive tasks in your Flutter/Dart projects. It is handy for mono-repositories where developers work across multiple packages. For example, calling pub get for all packages or releasing your app to Firebase in a language you’re familiar with: Dart! Creating a sidekick CLI The initial setup is done with…

This release brings a new type of lint rules package:lint/casual.yaml. lint has always been a great choice, strict but not annoying. In lint: ^1.0.0 you could choose between two presets: package:lint/analysis_options.yaml the default rules package:lint/analysis_options_package.yaml default rules + those forcing an excellent public API But strict rules aren’t always necessary…

flutter_wrapper is a shell script that downloads and executes a pinned version of the Flutter SDK. Similar to the gradle wrapper that’s used in all Android projects. The project was created 4 years ago by Google Developer Expert Pascal Welsch (@passsy), ancient in the Flutter universe. Over the years, the…

No matter how great Flutter is, using Dart feels like a step backwards when coming from Kotlin. I understand the reasoning why Dart was chosen as Flutters language but I miss Kotlins feature rich standard library. That’s why I decided to port it to Dart. Welcome kt.dart! kt.dart doesn’t introduce…

If you tried Flutter — starting with the Flutter install process — you have to clone the Flutter repository and then manually added flutter to your PATH. Unconventional, isn’t it? Coming from Android I’m used to use the gradle-wrapper, a single executable named gradlew, sitting in the root of my…

Two year ago, in November 2015 I started learning Kotlin. One of the first things I coded where the challenges from Advent of Code followed by other coding events like Google Code Jam before I started with Kotlin in client projects. For me, those coding contests are a great way…

At grandcentrix we use the same code style in all Android projects and we love it! We open sourced it so you can use it, too. — We’ve started with the AOSP Java Code Style and tuned it depending on our needs over the last years. Due to official support of Kotlin we knew we have to create a major update. We’ve took the chance and went even further by questioning old decisions in an internal survey…

When you’re using MPV on Android, especially when your presenter survives configuration changes, the presenter has at least two methods: void attachView(View) and void detachView() Because the View can be detached your View getView(); method should be marked with @Nullable. But now you have to throw if (view != null)…

Most Android Developer know that the best practices from Google for Android aren’t very practical. They are still promoting AsyncTask as the solution pulling work from the main thread. I found myself implementing SyncAdapters and ContentProviders because that’s what the Google I/O app does for downloading and saving data in…