Setting different divider color to each element in list view

Question

I want to have a list with different dividers between the list elements. I have used this code to define a white divider with height 1:

_listView.setDivider(         


        

Answer 1

Set the divider to height to 0 and implement a View in your item layout with the height of 1 and change its color based on the list item every time the view is built.

Here's an XML layout sample:

And this is how you change the color in the adapter:

public class MyAdapter extends BaseAdapter {
    /** List of items to show */
    private ArrayList items = new ArrayList();
    private Context context;
    private int color[];

    public OffersAdapter(Context c, ArrayList items, int color[])
    {
        super();
        this.context = c;
        this.items = items;
        this.color = color;
    }

    public int getCount() {
        return items.size();
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }

public View getView(final int position, View convertView, ViewGroup parent) {
    final ViewHolder viewHolder;

    if(null == convertView)
    {
        LayoutInflater inflater = LayoutInflater.from(context);
        convertView = inflater.inflate(R.layout.list_item, parent, false);

        viewHolder.text = (TextView) convertView.findViewById(R.id.text);
        viewHolder.divider = (View) convertView.findViewById(R.id.divider);

        convertView.setTag(viewHolder);
    } else {
        //Retrieve the current view
        viewHolder = (ViewHolder) convertView.getTag(); 
    }

    //This is where you chance the divider color based on the item  
    viewHolder.divider.setBackgroundColor(color[position]);

  viewHolder.text.setText(items.get(position));

    return convertView;
}

//Holds the current view
 private static class ViewHolder {
         public TextView text;
         public View divider;
     }   
}

Where int color[] is a list of the colors you want to use.

More about ViewHolder read here.