In this article, you’ll learn how the Lifecycle.repeatOnLifecycle, and Flow.flowWithLifecycle APIs protect you from wasting resources and why they’re a good default to use for flow collection in the UI layer.

LiveData was something we needed back in 2017. The observer pattern made our lives easier, but options such as RxJava were too complex for beginners at the time. The Architecture Components team created LiveData: a very opinionated observable data holder class, designed for Android. It was kept simple to make it easy to get started and the recommendation was to use RxJava for more complex reactive streams cases, taking advantage of the integration between the two.