In the modern Android ecosystem, user interfaces are rarely simple. They often consist of complex hybrids: a collapsing toolbar, a tab layout, a view pager, and within each tab, a RecyclerView or ListView . When you put scrolling containers inside other scrolling containers, you encounter the infamous scroll conflict .
<androidx.core.widget.NestedScrollView app:layout_behavior="@string/appbar_scrolling_view_behavior"> <!-- Content here --> </androidx.core.widget.NestedScrollView> </androidx.coordinatorlayout.widget.CoordinatorLayout> nestedscrollview
By attaching the appbar_scrolling_view_behavior to the NestedScrollView , the scroll events automatically trigger the AppBarLayout to expand or collapse. If you are using Jetpack Compose, the equivalent is Modifier.nestedScroll . The same principles apply: In the modern Android ecosystem, user interfaces are