com.github.pwittchen.infinitescroll.library

Class InfiniteScrollListener

java.lang.Object

RecyclerView.OnScrollListener

com.github.pwittchen.infinitescroll.library.InfiniteScrollListener

public abstract class InfiniteScrollListener
extends RecyclerView.OnScrollListener

InfiniteScrollListener, which can be added to RecyclerView with addOnScrollListener to detect moment when RecyclerView was scrolled to the end.

Constructor Summary

Constructors

Constructor and Description
InfiniteScrollListener(int maxItemsPerRequest, LinearLayoutManager layoutManager) Initializes InfiniteScrollListener, which can be added to RecyclerView with addOnScrollListener method

Method Summary

Modifier and Type	Method and Description
protected boolean	canLoadMoreItems() Checks if more items can be loaded to the RecyclerView
void	onScrolled(RecyclerView recyclerView, int dx, int dy) Callback method to be invoked when the RecyclerView has been scrolled
abstract void	onScrolledToEnd(int firstVisibleItemPosition) Callback method to be invoked when the RecyclerView has been scrolled to the end
protected void	refreshView(RecyclerView view, RecyclerView.Adapter adapter, int position) Refreshes RecyclerView by setting new adapter, calling invalidate method and scrolling to given position

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InfiniteScrollListener

public InfiniteScrollListener(int maxItemsPerRequest,
                              LinearLayoutManager layoutManager)

Initializes InfiniteScrollListener, which can be added to RecyclerView with addOnScrollListener method

Parameters:

maxItemsPerRequest - Max items to be loaded in a single request.

layoutManager - LinearLayoutManager created in the Activity.

Method Detail

onScrolled

public void onScrolled(RecyclerView recyclerView,
                       int dx,
                       int dy)

Callback method to be invoked when the RecyclerView has been scrolled

Parameters:

recyclerView - The RecyclerView which scrolled.

dx - The amount of horizontal scroll.

dy - The amount of vertical scroll.

refreshView

protected void refreshView(RecyclerView view,
                           RecyclerView.Adapter adapter,
                           int position)

Refreshes RecyclerView by setting new adapter, calling invalidate method and scrolling to given position

Parameters:

view - RecyclerView to be refreshed

adapter - adapter with new list of items to be loaded

position - position to which RecyclerView will be scrolled

canLoadMoreItems

protected boolean canLoadMoreItems()

Checks if more items can be loaded to the RecyclerView

Returns:

boolean Returns true if can load more items or false if not.

onScrolledToEnd

public abstract void onScrolledToEnd(int firstVisibleItemPosition)

Callback method to be invoked when the RecyclerView has been scrolled to the end

Parameters:

firstVisibleItemPosition - Id of the first visible item on the list.