SwatchAdapter.java

package com.tutsplus.palette;

import android.content.Context;
import android.support.v7.graphics.Palette;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.Comparator;

/**
 * Created by paulruiz on 5/29/15.
 */
public class SwatchAdapter extends ArrayAdapter<Palette.Swatch> {

    public SwatchAdapter( Context context ) {
        this( context, 0 );
    }

    public SwatchAdapter(Context context, int resource) {
        super(context, resource);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if( convertView == null ) {
            holder = new ViewHolder();
            convertView = LayoutInflater.from( getContext() ).inflate( R.layout.color_item, parent, false );
            holder.view = (TextView) convertView.findViewById( R.id.view );
            convertView.setTag( holder );
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        holder.view.setBackgroundColor( getItem( position ).getRgb() );
        holder.view.setTextColor( getItem( position ).getBodyTextColor() );
        holder.view.setText( "Population: " + getItem( position ).getPopulation() );

        return convertView;
    }

    public void sortSwatches() {
        sort(new Comparator<Palette.Swatch>() {
            @Override
            public int compare( Palette.Swatch lhs, Palette.Swatch rhs ) {
                return rhs.getPopulation() - lhs.getPopulation();
            }
        });
    }

    public class ViewHolder {
        TextView view;
    }
}