菜鸟 eclipse 调试ormlite 实例 OrmLiteBaseActivity<DataHelper> 问题

import com.j256.ormlite.android.apptools.OrmLiteBaseActivity;
import android.app.Activity;

public class OrmLiteTestActivity extends OrmLiteBaseActivity<DataHelper> implements OnClickListener {
//public class OrmLiteTestActivity extends Activity {
 
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

init();
}

用 //public class OrmLiteTestActivity extends Activity {  执行正常！  用 ormlite 的extends OrmLiteBaseActivity<DataHelper>   出现以下错误
Activitythread.performlaunchactivity(Activitythread$activityclienrecord,intent)  source not found ormlite  eclipse

补充：移动开发 ,  Android