How to convert a List<Object> to PagedList<Object> and vice-versa?

Answer 1

This is how I solve my problem, this might help.

val items = List.... //this can be equal to your mutable list
val config = PagedList.Config.Builder()
                        .setPageSize(items.size)
                        .setEnablePlaceholders(false)
                        .setInitialLoadSizeHint(items.size)
                        .build()

val pagedList = PagedList.Builder(ListDataSource(items),config)
                .setNotifyExecutor (UiThreadExecutor ())
                .setFetchExecutor (AsyncTask.THREAD_POOL_EXECUTOR)
                .build ()


class UiThreadExecutor: Executor {
        private val handler = Handler (Looper.getMainLooper ())
        override fun execute (command: Runnable) {
            handler.post (command)
        }
    }

class ListDataSource (private val items: List): PageKeyedDataSource() {
            override fun loadInitial(params: LoadInitialParams, callback: LoadInitialCallback) {
                callback.onResult (items, 0, items.size)
            }
    
            override fun loadAfter(params: LoadParams, callback: LoadCallback) {
    
            }
    
            override fun loadBefore(params: LoadParams, callback: LoadCallback) {
    
            }
        }

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