MessageAdapter-ViewHolders.java

public class MessageAdapter extends RecyclerView.Adapter<MessageAdapter.MessageViewHolder> {

    // Edit your onCreateViewHolder method to use different layouts for each view type
    
    @Override
    public MessageViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        MessageType type = MessageType.values()[viewType];
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());

        View itemView;

        switch (type) {
            case Text:
            default:
                itemView = inflater.inflate(R.layout.item_message_text, parent, false);
                return new TextMessageViewHolder(itemView);
            case Image:
                itemView = inflater.inflate(R.layout.item_message_image, parent, false);
                return new ImageMessageViewHolder(itemView);
            case Location:
                itemView = inflater.inflate(R.layout.item_message_location, parent, false);
                return new LocationMessageViewHolder(itemView);
        }
    }
    
    // ... 
    
    // Then add additional ViewHolders 
    
    private class TextMessageViewHolder extends MessageViewHolder {

        final TextView messageText;

        public TextMessageViewHolder(View itemView) {
            super(itemView);

            messageText = (TextView) itemView.findViewById(R.id.message_text);
        }

        @Override
        void bind(int position) {
            Message msg = messages.get(position);
            messageText.setText(msg.text);
        }
    }

    private class ImageMessageViewHolder extends MessageViewHolder {

        final ImageView messageImage;

        public ImageMessageViewHolder(View itemView) {
            super(itemView);
            messageImage = (ImageView) itemView.findViewById(R.id.message_image);
        }

        @Override
        void bind(int position) {
            Message msg = messages.get(position);
            messageImage.setImageDrawable(msg.image);
        }
    }

    private class LocationMessageViewHolder extends MessageViewHolder {

        public LocationMessageViewHolder(View itemView) {
            super(itemView);
        }

        @Override
        void bind(int position) {
            Message msg = messages.get(position);
            Location location = msg.location;
            // TODO: Load location into MapView
        }
    }
    
}