Spinner+animazione

[psicomant]

Salve a tutti!

Allora il mio problema e' questo:

devo realizzare un'Activity, con un'animazione, in modo tale che possa passare tra una schermata e un'altra della stessa activity, dopo aver selezionato un elemento presente in un menu spinner che raccoglie l'elenco dei sensori disponibili sul mobile.
Il problema e' che quando seleziono il sensore dal menu, non passa alla schermata successiva.
Suggerimenti?

Di seguito posto il codice scritto fin qui, se qualcuno ha suggerimenti

public class interfaceCSMAS extends Activity {
	public Sensor selectedItem;
	public String[] sensorArray = new String[]{""};
	public List<Sensor> list;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Set main.XML as the layout for this Activity
        setContentView(R.layout.main);

        SensorManager SM = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
        list = SM.getSensorList(Sensor.TYPE_ALL);
        
        TextView sensorTot = (TextView)findViewById(R.id.tv_sensor);
        // sensor number...
        sensorTot.setText(this.getString(R.string.nsensor)+": "+list.size()+"!");
        
        int size = list.size();
        String sensorList = new String("");

        int i;
        for (i=0; i<size; i++){
        	sensorList = " "+sensorList+list.get(i).getName();
        	sensorArray[i] = list.get(i).getName();
        }
        TextView sensorListView = (TextView)findViewById(R.id.tv_sensor_list);
        if(i>0){
        	sensorList = getString(R.string.tv_sensor_list)+":\n"+ sensorList;
        	sensorListView.setText(sensorList);
        }
        
        // Add sensor list to the spinner 
        Spinner spinnerSensors = (Spinner) findViewById(R.id.spinner_sensor);
        ArrayAdapter<String> sensorArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, sensorArray);
        spinnerSensors.setOnItemSelectedListener(new myOnItemSelectedListener());
        spinnerSensors.setAdapter(sensorArrayAdapter);
        
        // Set the listener for Button_Next, a quick and dirty way to create a listener
        Button buttonNext = (Button) findViewById(R.id.Button_next);
        buttonNext.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                // Get the ViewFlipper from the layout
                ViewFlipper vf = (ViewFlipper) findViewById(R.id.details);
                // Set an animation from res/anim
                vf.setAnimation(AnimationUtils.loadAnimation(view.getContext(), R.anim.fade));
                vf.showNext();
            }
        });

        // Set the listener for Button_Previous, a quick and dirty way to create a listener
        Button buttonPrevious = (Button) findViewById(R.id.Button_previous);
        buttonPrevious.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                // Get the ViewFlipper from the layout
                ViewFlipper vf = (ViewFlipper) findViewById(R.id.details);
                // Set an animation from res/anim
                vf.setAnimation(AnimationUtils.loadAnimation(view.getContext(), R.anim.fade));
                vf.showPrevious();
            }
        });        

    }
    
    //final Handler mHandler = new Handler();
    
    // handler OnItemSelectedListener...
    public class myOnItemSelectedListener implements OnItemSelectedListener{
    	public void onItemSelected(AdapterView<?> parent, View view,
				int item, long arg3) {
			selectedItem = list.get(item);
			ViewFlipper vf = (ViewFlipper) findViewById(R.id.details);
			vf.setAnimation(AnimationUtils.loadAnimation(view.getContext(), R.anim.fade));
			vf.showNext();
		}

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