News and views on the world of interactive media from the gskinner team
Category / Flutter
Recently we’ve been exploring the ability to extend the base State<T> class, to add additional capabilities to our views, or writing our own custom Mixins to do the same.
Most Developers are familiar with using the various framework Mixins, like TickerProviderStateMixin but what is not commonly known, is how easy it is to create your own flavors of these. Additionally, many developers extend State<T> constantly, and write very repetitive boilerplate code, without realizing how easy it is to create their own BaseState<T> instead.
In this example, we’ll make a “base state” that provides 3 AnimatorControllers to any widget that needs to animate something. We could then apply this to any Widget in our application, and it automatically get 3 animators to play with. No setup, or teardown required.
As we begin pushing Flutter to more platforms such as Desktop and Web, it is becoming increasingly important to quickly and easily measure performance of your application. While the built-in performance monitor gets the job done, it leaves a lot to be desired in terms of readability and flexibility.
As the old school Flash devs we are, we remember the days when virtually every Flash application around would use the hi-res-stats package by mrdoob (yes, that mrdoob). It was extremely helpful to catch performance issues, and make sure your application was smooth (which in those days, was a solid 24fps!).
Currently nothing like that exists in the Flutter community. To help fill this gap, we’ve created StatsFl! Available now on pub.dev: https://pub.dev/packages/statsfl
There is a lot to like about Flutter, but one area I’m sure no one loves, is taming the Material Theme system! With over 65(!) properties, some of which, like TextTheme, break out into 10 more sub-properties is enough to make you go crazy pretty quick.
Last week we looked at how you can easily implement TextStyling, and this week we’re going to dive into Color Themes. We’ll take a look at a technique that we use to implement custom app-specific themes, while still providing Material ThemeData to the core Flutter components.
This works, but can end duplicated the same code all around your code base replicating the same transitions, violating the core tenant of DRY programming. Additionally if you’re using custom routes, then you’ll be forced to create additional widgets for each type, or worse, copy tons of boilerplate from view to view.
They are super cool to look at and appear to be highly performant. The only issue? The examples they’ve provided with the package are pretty hard to follow (coming in at close to 1500 lines!) and there’s no code snippets at all in the README.
But fear not! This package is actually extremely simple to use once you clear away the noise, and can see how it works.
The original thought was to add the methods to MediaQuery, which didn’t seem that appealing because it would still be quite verbose to access. Then we realized we could just use the build context directly, which turned out really nice! So nice, that we’ve gone ahead and created a package for it here: https://pub.dev/packages/sized_context.