Unfortunately, fragmentation issues prevent many people from using the latest Android versions. Right now, if Google wants to update the LinearLayout component, it needs to release a new version of the OS. This is a major advantage for developers. It’s IndependentĬompose is a library that isn’t coupled to the operating system. It’s smart enough to only change the section that needs to change.
Note: Compose doesn’t actually rebuild the entire View when you update something. Instead, you just re-run the code that created the View with different parameters. So you’re no longer grabbing a reference to the View after you’ve created it. When you want to change the visibility, you re-run the code describing the UI.
In a declarative UI, you instead describe the UI as being visible or not. With the current UI toolkit, you’d typically use a method like findViewById() to get a reference to the View you want to hide, then call setVisibility() on it. Jetpack Compose is a declarative UI framework, which means you describe your view without relying on mutation and more traditional imperative programming concepts. Why Build With Jetpack Compose?īefore you write your first app with Compose, consider why the Android team wrote the library.Ĭompose has three huge benefits over the current UI-building process in Android. You should not use it in production apps, as it is bound to change, and possibly break your code. After you’ve mastered the basics, you’ll proceed to use Jetpack Compose to build a cookbook app, which shows a Material-design-powerded list of food recipes, with cards, images, and text. In this tutorial, you’ll learn about the basic concepts of Jetpack Compose, such as composable functions, setting the content to the screen, and updating content. If you want to stay up-to-date on the latest and greatest technology, read on! It is a part of the Jetpack suite of libraries and as such should provide compatibility throughout platform versions, removing the need to avoid certain features, because you’re targeting lower-end devices or older versions of Android.Īlthough it’s still in an alpha, Compose is already making big waves in the Android community. Jetpack Compose is Google’s response to the declarative UI framework trend, which the Android team is developing to fundamentally change the way developers create UI, making it easier and faster to write, and more performant to run. Frontend toolkits and frameworks such as React.js and Flutter have grown more and more popular by the day, and this has influenced other platforms to come up with their own implementations, using the same approach.Īt Google I/O 2019, Google first announced Jetpack Compose. Following such a trend, it’s only natural that building user interfaces has taken a turn in that direction, as well, with the trend of declarative UI frameworks and toolkits.
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