LoadMoreListView

public class LoadMoreListView extends ListView implements OnScrollListener {

private OnScrollListener mOnScrollListener;
private LayoutInflater mInflater;

// footer view
private RelativeLayout mFooterView;
private TextView mLabLoadMore;
private CircularProgressBar mProgressBarLoadMore;

// Listener to process load more items when user reaches the end of the list
private OnLoadMoreListener mOnLoadMoreListener;
// To know if the list is loading more items
private boolean mIsLoadingMore = false;

private boolean mCanLoadMore = true;
private int mCurrentScrollState;

public LoadMoreListView(Context context) {
super(context);
init(context);
}

public LoadMoreListView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}

public LoadMoreListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context);
}

private void init(Context context) {
mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

// footer
mFooterView = (RelativeLayout) mInflater.inflate(R.layout.common_load_more_footer, this, false);
mLabLoadMore = (TextView) mFooterView.findViewById(R.id.common_load_more_footer_msg);
mProgressBarLoadMore = (CircularProgressBar) mFooterView.findViewById(R.id.common_load_more_footer_progress);

addFooterView(mFooterView);

super.setOnScrollListener(this);
}

@Override
public void setAdapter(ListAdapter adapter) {
super.setAdapter(adapter);
}

public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {

if (mOnScrollListener != null) {
mOnScrollListener.onScroll(view, firstVisibleItem,
visibleItemCount, totalItemCount);
}

if (mOnLoadMoreListener != null) {

if (visibleItemCount == totalItemCount) {
mProgressBarLoadMore.setVisibility(View.GONE);
mLabLoadMore.setVisibility(View.GONE);
return;
}

boolean loadMore = firstVisibleItem + visibleItemCount >= totalItemCount;

if (!mIsLoadingMore && loadMore
&& mCurrentScrollState != SCROLL_STATE_IDLE) {
if (!mCanLoadMore) {
mLabLoadMore.setVisibility(View.VISIBLE);
return;
}
mProgressBarLoadMore.setVisibility(View.VISIBLE);
mLabLoadMore.setVisibility(View.GONE);
mIsLoadingMore = true;
onLoadMore();
}

}

}

public void onScrollStateChanged(AbsListView view, int scrollState) {
mCurrentScrollState = scrollState;

if (mOnScrollListener != null) {
mOnScrollListener.onScrollStateChanged(view, scrollState);
}

}

/**
* Set the listener that will receive notifications every time the list
* scrolls.
*
* @param listener The scroll listener.
*/
@Override
public void setOnScrollListener(OnScrollListener listener) {
mOnScrollListener = listener;
}

/**
* Register a callback to be invoked when this list reaches the end (last
* item be visible)
*
* @param onLoadMoreListener The callback to run.
*/
public void setOnLoadMoreListener(OnLoadMoreListener onLoadMoreListener) {
mOnLoadMoreListener = onLoadMoreListener;
}

public void setCanLoadMore(boolean canLoadMore) {
mCanLoadMore = canLoadMore;
mLabLoadMore.setVisibility(View.GONE);
}

public void onLoadMore() {
if (mOnLoadMoreListener != null) {
mOnLoadMoreListener.onLoadMore();
}
}

/**
* Notify the loading more operation has finished
*/
public void onLoadMoreComplete() {
mIsLoadingMore = false;
mProgressBarLoadMore.setVisibility(View.GONE);
}

/**
* Interface definition for a callback to be invoked when list reaches the
* last item (the user load more items in the list)
*/
public interface OnLoadMoreListener {
/**
* Called when the list reaches the last item (the last item is visible
* to the user)
*/
public void onLoadMore();
}

}