Nov 7, 2021Bang! Operator and how to improve your Dart NullabilityDart promised Sound null-safety to prevent us from committing the Billion Dollar Mistake. Unfortunately, neither Flutter nor our code is truly Soundly Null Safe. Whenever you use the bang operator ! …Flutter2 min readFlutter2 min read
Apr 5, 2021The New Flutter Integration Tests — Are They any Good?The current Flutter Driver tests will be deprecated and it’s recommended to move to the new Integration Tests. In this post let’s talk about what are the new tests good at and what are they still lacking. The Positives + Same API The API does not only look but is the same that is used…Flutter4 min readFlutter4 min read
Oct 26, 2020Running Flutter Desktop on Stable channelTL;DR: Follow those steps if you want to run Flutter as a desktop application on beta or stable channels (and not only on master or dev). At the time of writing this post, Flutter Desktop is still in Alpha and you are only allowed to enable it on master or…Flutter2 min readFlutter2 min read
Published inFlutter Community·Feb 5, 2020Blazing Fast Driver Tests - made easyTL;DR You can now write fast driver tests with much less amount of code using this package. A note of warning: if you are in a Flutter project that won’t take more than 3 months, you won’t need an extensive testing approach, therefore you won’t need the approach that I…Flutter2 min readFlutter2 min read
Published inFlutter Community·Dec 31, 2019How Slivers are made: SliverFillRemainingSliverFillRemaining is fairly simple yet useful — it fills the remaining scrollable space with a widget of your choice.Flutter3 min readFlutter3 min read
Published inFlutter Community·Nov 24, 2019How Slivers are madeThe best way to learn how to write your own Sliver is to know how existing Slivers are made. I would split Slivers into groups by their complexity: Easy Single child Slivers SliverToBoxAdapter — enables inserting a normal box Widgets as a Sliver SliverFillRemaining — fills remaining available space SliverPadding —…Flutter4 min readFlutter4 min read
Published inFlutter Community·Nov 13, 2019Blazingly Fast Flutter Driver TestsTL;DR: Ever wanted to speed up your Flutter Driver Tests by 750%?Flutter7 min readFlutter7 min read
Published inFlutter Community·Jul 26, 2019Flutter Animations Cheat SheetSince writing Flutter Layout Cheat Sheet article, I intended to create a similar article about Flutter’s animations. Unfortunately using GIFs or videos is not the greatest way to show the potential of animations. I was not able to teach animations compellingly… until now, thanks to Flutter Web. If you want…Cheatsheet2 min readCheatsheet2 min read
Published inFlutter Community·Mar 26, 2019Flutter Laggy Animations: How Not To setStateCreating animations in Flutter is really fun and easy, but there is one bad practice that might make those animations laggy: setState. Bad Practice: AnimationController and setState When using AnimationController in a StatefulWidget, you might be tempted to do the following: void initState() { _controller = AnimationController( vsync: this…Flutter3 min readFlutter3 min read
Published inFlutter Community·Feb 9, 2019Elements, Keys and Flutter’s performanceTL;DR: Widget Keys can improve the performance of our application in places where you do not get the promised 60 FPS. An Element is created internally by a Widget. Its main purpose is to know where in the widget tree is the widget that created it. Elements are expensive to…Flutter6 min readFlutter6 min read
