AbstractStorageDirFactory.java

public abstract class AlbumStorageDirFactory {

    /**
     * Returns a File object that points to the folder that will store 
     * the album's pictures. 
     */
    public abstract File getAlbumStorageDir(String albumName);

    /**
     * A static factory method that returns a new AlbumStorageDirFactory 
     * instance based on the current device's SDK version.
     */
    public static AlbumStorageDirFactory newInstance() {
        if (CompatabilityUtil.isFroyo()) {
            return new FroyoAlbumDirFactory();
        } else {
            return new BaseAlbumDirFactory();
        }
    }
}