/**
* 设置当前RecyclerView.FooterView的状态
*
* @param recyclerView
* @param state
*/
public static void setFooterViewState(RecyclerView recyclerView, LoadingFooter.State state) {
RecyclerView.Adapter outerAdapter = recyclerView.getAdapter();
if (outerAdapter != null && outerAdapter instanceof HeaderAndFooterRecyclerViewAdapter) {
if (((HeaderAndFooterRecyclerViewAdapter) outerAdapter).getFooterViewsCount() > 0) {
LoadingFooter footerView =
(LoadingFooter) ((HeaderAndFooterRecyclerViewAdapter) outerAdapter).getFooterView();
footerView.setState(state);
}
}
}
/**
* 获取当前RecyclerView.FooterView的状态
*
* @param recyclerView
*/
public static LoadingFooter.State getFooterViewState(RecyclerView recyclerView) {
RecyclerView.Adapter outerAdapter = recyclerView.getAdapter();
if (outerAdapter != null && outerAdapter instanceof HeaderAndFooterRecyclerViewAdapter) {
if (((HeaderAndFooterRecyclerViewAdapter) outerAdapter).getFooterViewsCount() > 0) {
LoadingFooter footerView =
(LoadingFooter) ((HeaderAndFooterRecyclerViewAdapter) outerAdapter).getFooterView();
return footerView.getState();
}
}
return LoadingFooter.State.Normal;
}
@Override
public void onScroll(
AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
if (mLoadingFooter.getState() == LoadingFooter.State.Loading
|| mLoadingFooter.getState() == LoadingFooter.State.TheEnd) {
return;
}
if (firstVisibleItem + visibleItemCount >= totalItemCount
&& totalItemCount != 0
&& totalItemCount != (getHeaderViewsCount() + getFooterViewsCount())
&& mLoadNextListener != null) {
mLoadingFooter.setState(LoadingFooter.State.Loading);
mLoadNextListener.onLoadNext();
}
}
/**
* 设置headerAndFooterAdapter的FooterView State
*
* @param recyclerView recyclerView
* @param pageSize 分页展示时，recyclerView每一页的数量
* @param state FooterView State
* @param errorListener FooterView处于Error状态时的点击事件
*/
public static void setFooterViewState(
Context context,
RecyclerView recyclerView,
int pageSize,
LoadingFooter.State state,
View.OnClickListener errorListener) {
if (context == null) {
return;
}
RecyclerView.Adapter outerAdapter = recyclerView.getAdapter();
if (outerAdapter == null || !(outerAdapter instanceof HeaderAndFooterRecyclerViewAdapter)) {
return;
}
HeaderAndFooterRecyclerViewAdapter headerAndFooterAdapter =
(HeaderAndFooterRecyclerViewAdapter) outerAdapter;
// 只有一页的时候，就别加什么FooterView了
if (headerAndFooterAdapter.getInnerAdapter().getItemCount() < pageSize) {
return;
}
LoadingFooter footerView;
// 已经有footerView了
if (headerAndFooterAdapter.getFooterViewsCount() > 0) {
footerView = (LoadingFooter) headerAndFooterAdapter.getFooterView();
footerView.setState(state);
if (state == LoadingFooter.State.NetWorkError) {
footerView.setOnClickListener(errorListener);
}
recyclerView.scrollToPosition(headerAndFooterAdapter.getItemCount() - 1);
} else {
footerView = new LoadingFooter(context);
footerView.setState(state);
if (state == LoadingFooter.State.NetWorkError) {
footerView.setOnClickListener(errorListener);
}
headerAndFooterAdapter.addFooterView(footerView);
recyclerView.scrollToPosition(headerAndFooterAdapter.getItemCount() - 1);
}
}
public void stopFooterAnimition() {
mLoadingFooter.stopFooterAnim();
}
public void setState(LoadingFooter.State status, long delay) {
mLoadingFooter.setState(status, delay);
}
public void setState(LoadingFooter.State status) {
mLoadingFooter.setState(status);
}
private void init() {
mLoadingFooter = new LoadingFooter(getContext());
addFooterView(mLoadingFooter.getView());
setOnScrollListener(this);
}