Add position param to onCreateHeaderViewHolder, so we can create different view holders

Author: iluz

library/src/main/java/com/timehop/stickyheadersrecyclerview/StickyRecyclerHeadersAdapter.java

@@ -20,9 +20,10 @@ public interface StickyRecyclerHeadersAdapter<VH extends RecyclerView.ViewHolder
    * to inflate the layout for the header.
    *
    * @param parent the view to create a header view holder for
+   * @param position the position of the item to create the view holder for.
    * @return the view holder
    */
-  VH onCreateHeaderViewHolder(ViewGroup parent);
+  VH onCreateHeaderViewHolder(ViewGroup parent, int position);
 
   /**
    * Binds an existing ViewHolder to the specified adapter position.

library/src/main/java/com/timehop/stickyheadersrecyclerview/caching/HeaderViewCache.java

@@ -31,7 +31,7 @@ public View getHeader(RecyclerView parent, int position) {
     View header = mHeaderViews.get(headerId);
     if (header == null) {
       //TODO - recycle views
-      RecyclerView.ViewHolder viewHolder = mAdapter.onCreateHeaderViewHolder(parent);
+      RecyclerView.ViewHolder viewHolder = mAdapter.onCreateHeaderViewHolder(parent, position);
       mAdapter.onBindHeaderViewHolder(viewHolder, position);
       header = viewHolder.itemView;
       if (header.getLayoutParams() == null) {

sample/src/main/java/com/timehop/stickyheadersrecyclerview/sample/MainActivity.java

@@ -142,7 +142,7 @@ public long getHeaderId(int position) {
     }
 
     @Override
-    public RecyclerView.ViewHolder onCreateHeaderViewHolder(ViewGroup parent) {
+    public RecyclerView.ViewHolder onCreateHeaderViewHolder(ViewGroup parent, int position) {
       View view = LayoutInflater.from(parent.getContext())
           .inflate(R.layout.view_header, parent, false);
       return new RecyclerView.ViewHolder(view) {