recyclerview/androidx.recyclerview.widget/SimpleItemAnimator/animateAppearance

animateAppearance

open fun animateAppearance(@NonNull viewHolder: RecyclerView.ViewHolder, @Nullable preLayoutInfo: RecyclerView.ItemAnimator.ItemHolderInfo, @NonNull postLayoutInfo: RecyclerView.ItemAnimator.ItemHolderInfo): Boolean(source)

Called by the RecyclerView when a ViewHolder is added to the layout.

In detail, this means that the ViewHolder was not a child when the layout started but has been added by the LayoutManager. It might be newly added to the adapter or simply become visible due to other factors.

ItemAnimator must call dispatchAnimationFinished when the animation is complete (or instantly call dispatchAnimationFinished if it decides not to animate the view).

Return

true if a later call to runPendingAnimations is requested, false otherwise.

Parameters

viewHolder

The ViewHolder which should be animated

preLayoutInfo

The information that was returned from recordPreLayoutInformation. Might be null if Item was just added to the adapter or LayoutManager does not support predictive animations or it could not predict that this ViewHolder will become visible.

postLayoutInfo

The information that was returned from recordPreLayoutInformation.