I'm implementing a ListAdapter of ExpandableListView, while working i see that i need to overide the function boolean hasStableIds().
Can anyone explain please what is the meaning of stable ids? when I need this?
Stable IDs allow the
ListView to optimize for the case when items remain the same between
notifyDataSetChanged calls. The IDs it refers to are the ones returned from
Without it, the
ListView has to recreate all
Views since it can't know if the item IDs are the same between data changes (e.g. if the ID is just the index in the data, it has to recreate everything). With it, it can refrain from recreating
Views that kept their item IDs.