The Navigation component is available from Android Studio 3.3 and afterwards. In this article, we will go over the main aspects of this component and learn how we can integrate it into our applications. A fragment defines and manages its own layout, has its own lifecycle, and can handle its own input events. It presents your fragments and the connections between them in a top down manner. A Fragment represents a reusable portion of your apps UI. Think of it like a map, where instead of continents, you have your fragments, and you will need directions to get from continent to continent. To the unfamiliar, the Navigation Component is not another UI class that you place instead of a layout for your activity/fragment. (app -> java -> -> SecondFragment) and fragmentsecond.xml.Wouldnât it be nice then, if we could take whatever it is that is on that whiteboard and replicate it easily in code? Developing Android Apps Using Android Studio 2021.1 and Kotlin Neil Smyth. What you initially thought would be an application with one or two activities, suddenly appears to have multiple flows, fragments and a wide range of user interaction. Designing an application tends to be cumbersome and more often than not, there is a whiteboard with arrows pointing from various points to others.
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