public class SubApplication extends Application {

    private DaoSession daoSession;     private static SubApplication subApplication;

   

    public void onCreate() {

        getDatabase();

        subApplication = this;

        super.onCreate();

    }

    public static SubApplication getInstance(){         return subApplication;     }

    private void getDatabase() {

        DaoMaster.DevOpenHelper openHelper = new DaoMaster.DevOpenHelper(this, "zuoye");         SQLiteDatabase database = openHelper.getWritableDatabase();         DaoMaster daoMaster = new DaoMaster(database);         daoSession = daoMaster.newSession();     }     public DaoSession getDaoSession(){         return daoSession;     } }