<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Spinner
        android:id="@+id/ring"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

package spinner.farbe.test;

public class RingColor {
		
	public double RingValue = 0;
	public String ColorName = "";
	public int Color = 0;
		
	public RingColor( double _RingValue, String _ColorName, int _Color)
	{
	    RingValue = _RingValue;
	    ColorName = _ColorName;
	    Color = _Color;
	}
	
	public RingColor()
	{
		
	}
	
	public String toString()
	{
		return ColorName;
	}

}

package spinner.farbe.test;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class SpinnerFarbenActivity extends Activity implements OnItemSelectedListener{
    /** Called when the activity is first created. */

	Spinner SpinnerRing;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
	    setContentView(R.layout.main);

        ArrayAdapter<?> ResistorRingValue = new ArrayAdapter<Object>(this, android.R.layout.simple_spinner_item,
        		new RingColor[]{
        			new RingColor( 1, "Red", Color.RED),
        			new RingColor( 5, "Yellow", Color.YELLOW),
        			new RingColor( 31, "Cyan", Color.CYAN)
        });
   
        ResistorRingValue.setDropDownViewResource(android.R.layout.select_dialog_item);
                
        SpinnerRing = (Spinner)this.findViewById(R.id.ring);
        SpinnerRing.setAdapter(ResistorRingValue);
        SpinnerRing.setOnItemSelectedListener(this);
	}

	public void onItemSelected(AdapterView<?> parent, View arg0, int position, long id){
		RingColor rc = (RingColor)SpinnerRing.getSelectedItem();
		SpinnerRing.setBackgroundColor(rc.Color);
	}

	public void onNothingSelected(AdapterView<?> arg0) {
	}
}