Android Navigation
Navigation Component, NavController, SafeArgs, Deep Links, Bottom Navigation, Drawer
1What is Jetpack's Navigation Component?
What is Jetpack's Navigation Component?
回答
Navigation Component is a Jetpack library that simplifies navigation between destinations (fragments/activities). It offers automatic back stack management, SafeArgs for type-safe arguments, navigation graph visualization, and handles deep links. It's Google's recommended solution for navigation in modern Android apps.
2What is a Navigation Graph?
What is a Navigation Graph?
回答
A Navigation Graph is an XML file (stored in res/navigation/) that visually defines all navigation destinations (fragments, activities) and transition actions between them. It allows visualizing the app's navigation flow and defines arguments passed between destinations. It's the central file of Navigation Component.
3What is the NavController?
What is the NavController?
回答
NavController is the central object that manages navigation within a NavHost. It allows navigating between destinations (navigate()), going back (popBackStack()), and managing the back stack. It's obtained via findNavController() from a Fragment or Navigation.findNavController(view). It executes actions defined in the Navigation Graph.
What is the NavHost?
How to navigate to a destination with NavController?
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