package com.github.jdsjlzx.recyclerview;
import android.support.v7.widget.GridLayoutManager;
/**
* Created by lizhixian.
* <p/>
* RecyclerView为GridLayoutManager时,设置了HeaderView,就会用到这个SpanSizeLookup
*/
public class HeaderSpanSizeLookup extends GridLayoutManager.SpanSizeLookup {
private LRecyclerViewAdapter adapter;
private int mSpanSize = 1;
public HeaderSpanSizeLookup(LRecyclerViewAdapter adapter, int spanSize) {
this.adapter = adapter;
this.mSpanSize = spanSize;
}
@Override
public int getSpanSize(int position) {
boolean isHeaderOrFooter = adapter.isRefreshHeader(position) || adapter.isHeader(position) || adapter.isFooter(position);
return isHeaderOrFooter ? mSpanSize : 1;
}
}