android problema gallery

ciao
scusate , solo da poco ho iniziato a lavorare con android ,
ho il seguente problema :
ho definito il seguente XML :

Codice:

<?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" >

    <Gallery
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/Gallery2"
        android:layout_width="fill_parent"
        android:layout_marginTop="150dp"
        android:layout_marginLeft="15dp"
        android:layout_marginRight="15dp"
        android:layout_gravity="center_horizontal|center_vertical"
        android:layout_height="200dp" />

    <ImageView
        android:id="@+id/GalleryView2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

ho fatto la seguente activity :

Codice:

public class GalleryActivity2 extends Activity {

	GalleryAdapter2 adapterGallery;	
	Drawable[] imgs = new Drawable[4];
	ArrayList<String> images = new ArrayList<String>();
	String image1; 
	String image2; 
	String image3; 
	String image4; 
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.gallery2);

		Intent intent = getIntent();

		image1 =  intent.getStringExtra("image1");
		image2 =  intent.getStringExtra("image2");
		image3 =  intent.getStringExtra("image3");
		image4 =  intent.getStringExtra("image4");
		
		images.add(image1);
		if (!image2.equals("0")) 
     		images.add(image2);
		if (!image3.equals("0")) 
     		images.add(image3);
		if (!image4.equals("0")) 
     		images.add(image4);
		
		adapterGallery = new GalleryAdapter2(this, images);

		ImageView imgView = (ImageView) findViewById(R.id.GalleryView2);
		Gallery gallery = (Gallery) findViewById(R.id.Gallery2);

		gallery.setAdapter(adapterGallery); 
		
* * }
}

e l'adapter è :

Codice:

public class GalleryAdapter2 extends BaseAdapter {

	private final Context context ;
	private final Drawable[] images;

    public GalleryAdapter2(Context context, Drawable[] images) {
    	this.context = context;
    	this.images = images;
    	}
    
    	@Override
    	public int getCount() {
    	return images.length;
    	}
    	
    	@Override
    	public Object getItem(int position) {
    	return images[position];
    	}

    	@Override
    	public long getItemId(int position) {
    	return images[position].hashCode();
    	}

    	@Override
    	public View getView(int position, View convertView, ViewGroup parent) {
    	ImageView imageView;
    	if (convertView == null) {
    	imageView = new ImageView(context);
    	imageView.setScaleType(ScaleType.CENTER_CROP);
    	} else {
    	imageView = (ImageView) convertView;
    	}
    	imageView.setImageDrawable(images[position]);
    	return imageView;
    	}

però nell'acctivity ho il problema di passare il Drawable all'adapter ,
per favore sapreste come fare ?
grazie
ciao