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@hadifar
Created December 1, 2015 14:14
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This is pagingListview for SO question
package com.paging.listview;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.AbsListView;
import android.widget.HeaderViewListAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import java.util.List;
public class PagingListView extends ListView {
public interface Pagingable {
void onLoadMoreItems();
}
private boolean isLoading;
private boolean hasMoreItems;
private Pagingable pagingableListener;
private OnScrollListener onScrollListener;
public PagingListView(Context context) {
super(context);
init();
}
public PagingListView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public PagingListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
public boolean isLoading() {
return this.isLoading;
}
public void setIsLoading(boolean isLoading) {
this.isLoading = isLoading;
}
public void setPagingableListener(Pagingable pagingableListener) {
this.pagingableListener = pagingableListener;
}
public void setHasMoreItems(boolean hasMoreItems) {
this.hasMoreItems = hasMoreItems;
// if(!this.hasMoreItems) {
// removeFooterView(loadingView);
// }
// else if(findViewById(R.id.loading_view) == null){
// addFooterView(loadingView);
// ListAdapter listAdapter = ((HeaderViewListAdapter)getAdapter()).getWrappedAdapter();
// setAdapter(listAdapter);
// }
}
public boolean hasMoreItems() {
return this.hasMoreItems;
}
public void onFinishLoading(boolean hasMoreItems, List<? extends Object> newItems) {
setHasMoreItems(hasMoreItems);
setIsLoading(false);
if (newItems != null && newItems.size() > 0) {
ListAdapter adapter = getAdapter();
// ListAdapter listAdapter = ((HeaderViewListAdapter)getAdapter()).getWrappedAdapter();
if (adapter instanceof PagingBaseAdapter) {
((PagingBaseAdapter)adapter).addMoreItems(newItems);
} else{
try {
((PagingBaseAdapter) ((HeaderViewListAdapter) getAdapter()).getWrappedAdapter()).addMoreItems(newItems);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
// public void setLoadingView(View loadingView) {
// removeFooterView(this.loadingView);
// addFooterView(loadingView);
// this.loadingView = loadingView;
// }
private void init() {
isLoading = false;
// if(loadingView == null)
// loadingView = new LoadingView(getContext());
super.setOnScrollListener(new OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
//Dispatch to child OnScrollListener
if (onScrollListener != null) {
onScrollListener.onScrollStateChanged(view, scrollState);
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
//Dispatch to child OnScrollListener
if (onScrollListener != null) {
onScrollListener.onScroll(view, firstVisibleItem, visibleItemCount, totalItemCount);
}
int lastVisibleItem = firstVisibleItem + visibleItemCount;
if (!isLoading && hasMoreItems && (lastVisibleItem == totalItemCount)) {
if (pagingableListener != null) {
isLoading = true;
pagingableListener.onLoadMoreItems();
}
}
}
});
}
@Override
public void setOnScrollListener(OnScrollListener listener) {
onScrollListener = listener;
}
}
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