Изображение не загружается с помощью Novoda / ImageLoader

Я пытаюсь загрузить изображения из Интернета с помощью библиотеки ImageLoader в виде сетки. Но получение исключения нулевого указателя в imageManager.getLoader().load(fView.pic);.

Может кто-нибудь сказать мне, где я ошибаюсь.

Класс StartApp:

public class StartApp extends Application {

    private static ImageManager imageManager;

    @Override
    public void onCreate() {
        super.onCreate();
        LoaderSettings settings = new LoaderSettings();

        settings.setDisconnectOnEveryCall(true);
        settings.setCacheManager(new LruBitmapCache(this));

        imageManager = new ImageManager(this, settings);
        // // To clean the file cache
        // imageManager.getFileManager().clean();

    }

    public static ImageManager getImageLoader() {
        return imageManager;
    }
}

Класс активности:

public class MainActivity extends Activity {
    private GridView gridview;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.grid_layout);

        gridview = (GridView) findViewById(R.id.gridview);
        gridview.setPadding(10, 10, 10, 10);
        gridview.setAdapter(new GridImageAdapter(this));

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

Класс адаптера GridView, который расширяет BaseAdapter:

public class GridImageAdapter extends BaseAdapter {
    private Context context;
    private int width = 270;
    private int height = 270;
    private int textFactor = 35;
    private LayoutInflater layoutInflater;

    private String[] nameEvents = {"image1","image2"};
    private String[] urls = {"http://api.androidhive.info/images/sample.jpg","http://api.androidhive.info/images/sample.jpg" };
    ImageManager imageManager;
    ImageTagFactory imageTagFactory;

    public GridImageAdapter(Context mContext) {
        context = mContext;
        layoutInflater = LayoutInflater.from(context);

        /*Image Loader*/
        imageManager = StartApp.getImageLoader();
        imageTagFactory = ImageTagFactory.newInstance(context,  R.drawable.ic_launcher);
        imageTagFactory.setErrorImageId(R.drawable.not_found);
    }

    public int getCount() {

        return nameEvents.length;
    }

    public Object getItem(int position) {

        return position;
    }

    public long getItemId(int position) {

        return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {

        FriendView fView = new FriendView();
        int imagePadding = 10;
        if (convertView == null) {
            convertView = new View(context);
            convertView = layoutInflater.inflate(R.layout.grid_cell_layout,
                    null);
            // convertView.setBackgroundColor(Color.DKGRAY);
            convertView.setPadding(3, 0, imagePadding - 1, imagePadding);
            convertView.setBackgroundResource(R.drawable.background_shadow);
            convertView
                    .setLayoutParams(new GridView.LayoutParams(width, height));

        } else {
            fView = (FriendView) convertView.getTag();

        }
        fView.pic = (ImageView) convertView.findViewById(R.id.image);
        /* height has to be reduced to display the text */
        fView.pic.setLayoutParams(new LinearLayout.LayoutParams(width, height
                - textFactor));
        fView.pic.setAdjustViewBounds(true);
        fView.pic.setScaleType(ImageView.ScaleType.FIT_XY);



        //((StartApp) context.getApplicationContext()).getImageLoader().getLoader().load(imageView);
        fView.name = (TextView) convertView.findViewById(R.id.title);
        fView.name.setTextColor(Color.BLACK);
        convertView.setTag(fView);

        fView.name.setText(nameEvents[position]);
    //  GridImageAdapter.imageLoader.DisplayImage(urls[position], fView.pic);
        ((ImageView) fView.pic).setTag(imageTagFactory.build(urls[position],context));
        imageManager.getLoader().load(fView.pic);

        return convertView;
    }

    static class FriendView {
        TextView name;
        ImageView pic;
    }
}

Заранее спасибо.