hasPendingAdapterUpdates
Returns whether there are pending adapter updates which are not yet applied to the layout.
If this method returns true, it means that what user is currently seeing may not reflect them adapter contents (depending on what has changed). You may use this information to defer or cancel some operations.
This method returns true if RecyclerView has not yet calculated the first layout after it is attached to the Window or the Adapter has been replaced.
Return
True if there are some adapter updates which are not yet reflected to layout or false if layout is up to date.