This change has come about because declarative programming is less error-prone, more composable, and easier to test since you’re working mostly with values of data, rather than interactions.įollowing 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. This means that people have moved away from the classic imperative MVC/P (Model-View-Controller/Presenter) approach, to a more reactive approach such as MVVM (Model-View-ViewModel), where you update data streams within a ViewModel, and the UI reacts to the change by re-drawing itself or simply updating sections of the UI. The past year or two have been all about building declarative and reactive programming when it comes to apps’ business logic. Whether the current trend is about language safety and stability, or performance improvements of the platform, it’s always important to keep up to the trends, because some of them radically change the way we develop applications.

Mobile app development innovations often come in waves or trends.

In this Jetpack Compose tutorial, you’ll learn to use the new declarative UI framework being developed by the Android team by creating a cookbook app.

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