Performance tips for RecyclerView in Android?

 
// Example of RecyclerView optimization
public class MyAdapter extends RecyclerView.Adapter {
    
    private List dataList;

    public MyAdapter(List dataList) {
        this.dataList = dataList;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        DataItem dataItem = dataList.get(position);
        holder.bind(dataItem);
    }

    @Override
    public int getItemCount() {
        return dataList.size();
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder {
        private TextView textView;

        public MyViewHolder(View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.textView);
        }

        public void bind(DataItem dataItem) {
            textView.setText(dataItem.getTitle());
        }
    }
}

// Tips for optimized RecyclerView usage
// 1. Use ViewHolder pattern to improve performance.
// 2. Avoid using notifyDataSetChanged() and prefer specific notify methods.
// 3. Use DiffUtil for handling changes in data efficiently.
// 4. Set fixed size with recyclerView.setHasFixedSize(true) if applicable.
// 5. Use item decorators for spacing instead of padding in item layouts.