Source link: https://github.com/lopspower/HFRecyclerView

HFRecyclerView

This is an Android library allowing to add Header and/or Footer in your RecyclerView in the simplest way possible.

USAGE

To add Header and/or Footer in your RecyclerView you need to add HFRecyclerView library in your project or you can also grab it from Gradle:

compile 'com.mikhaellopez:hfrecyclerview:1.0.0'

JAVA

You need to create a custom RecyclerView.Adapter for your RecyclerView which extends HFRecyclerView with the object type of your choice (in my example, my object type is MyDataObject :
```
public class ExampleAdapter extends HFRecyclerView<MyDataObject> {

  //... 
}
```

In your custom adapter, add a constructor. The first param in super constructor is your data list. The second is a flag to determine if you want to add a header, and the last to add a footer.

public class ExampleAdapter extends HFRecyclerView<MyDataObject> {

public ExampleAdapter(List<MyDataObject> data) {

// With Header & With Footer

super(data, true, true);

  
}

//... 
}

After that, override 3 methods and create 3 class which extend RecyclerView.ViewHolder in order to add the viewHolder for your Item, your Header and your Footer:

public class ExampleAdapter extends HFRecyclerView<MyDataObject> {

 //...

 //region Override Get ViewHolder
  @Override
  protected RecyclerView.ViewHolder getItemView(LayoutInflater inflater, ViewGroup parent) {

return new ItemViewHolder(inflater.inflate(R.layout.item_example, parent, false));

  
}

@Override
  protected RecyclerView.ViewHolder getHeaderView(LayoutInflater inflater, ViewGroup parent) {

return new HeaderViewHolder(inflater.inflate(R.layout.item_header, parent, false));

  
}

@Override
  protected RecyclerView.ViewHolder getFooterView(LayoutInflater inflater, ViewGroup parent) {

return new FooterViewHolder(inflater.inflate(R.layout.item_footer, parent, false));

  
}

  //endregion

//region ViewHolder Header and Footer
  class ItemViewHolder extends RecyclerView.ViewHolder {

TextView text;

 public ItemViewHolder(View itemView) {

 super(itemView);

 text = (TextView)itemView.findViewById(R.id.text);

}

  
}

class HeaderViewHolder extends RecyclerView.ViewHolder {

public HeaderViewHolder(View itemView) {

 super(itemView);

}

  
}

class FooterViewHolder extends RecyclerView.ViewHolder {

public FooterViewHolder(View itemView) {

 super(itemView);

}

  
}

  //endregion 
}

Finally, you must override onBindViewHolder method to manage your views as you like:

public class ExampleAdapter extends HFRecyclerView<MyDataObject> {

//...

@Override
  public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

if (holder instanceof ItemViewHolder) {

 ItemViewHolder itemViewHolder = (ItemViewHolder) holder;

 MyDataObject data = getItem(position);

 itemViewHolder.text.setText(data);

}
 else if (holder instanceof HeaderViewHolder) {

 
}
 else if (holder instanceof FooterViewHolder) {

 
}

  
}

 //... 
}