Remember views across reconstructions

[y9vad9]

Problem

Currently, any change to State<T> causes the reconstruction that removes all views and readds it to view.

Solution

I propose next variant with wrapping view adding feature and comparing views ids on each reconstruction:

remember(ids = 1, ...) {
  // this state is used for updating data of recyclerview that was created before
  // data update.
  val items = State<List<Account>>(emptyList())
  state.constructOnEach { state ->
    if(state is FooVM.State.Failure) {
     ...
    } else {
     // we set data to update old recycler view or for new, if it's first construction with recycler
     items.value = state.accounts
     recyclerView(id = 1, adapter = FooAdapter(), data = items)
    }
   }
}

*It requires custom realization of recycler view that has items (data) as state value

For this kind of realization, we should have custom StatedViewGroup to be able to compare new and old trees.