PickClassInfo.java

package cn.scau.scautreasure.ui;

import android.widget.AbsListView;

import org.androidannotations.annotations.AfterViews;
import org.androidannotations.annotations.Background;
import org.androidannotations.annotations.EActivity;
import org.androidannotations.annotations.rest.RestService;
import org.springframework.web.client.HttpStatusCodeException;

import cn.scau.scautreasure.AppContext;
import cn.scau.scautreasure.R;
import cn.scau.scautreasure.adapter.PickClassAdapter;
import cn.scau.scautreasure.api.EdusysApi;
import cn.scau.scautreasure.helper.UIHelper;

import static cn.scau.scautreasure.helper.UIHelper.LISTVIEW_EFFECT_MODE.EXPANDABLE_ALPHA;

/**
 * 选课情况;
 * User:  Special Leung
 * Date:  13-8-17
 * Time:  下午5:29
 * Mail:  specialcyci@gmail.com
 */
@EActivity( R.layout.pickclassinfo )
public class PickClassInfo extends CommonQueryActivity {


    @RestService
    EdusysApi api;

    @AfterViews
    void init(){
        setTitle(R.string.title_pickclassinfo);
        setDataEmptyTips(R.string.tips_pickclassinfo_null);
        cacheHelper.setCacheKey("pickClassInfo");
        list = cacheHelper.loadListFromCache();
        buildAndShowAdapter();
    }

    @Override
    @Background( id = UIHelper.CANCEL_FLAG )
    void loadData(Object... params) {
        beforeLoadData();
        try{
            list = api.getPickClassInfo(AppContext.userName, app.getEncodeEduSysPassword(), AppContext.server).getPickclassinfos();
            cacheHelper.writeListToCache(list);
            buildAndShowAdapter();
        }catch (HttpStatusCodeException e){
            showErrorResult(getSherlockActivity(), e.getStatusCode().value(),this);
        }catch (Exception e){
            handleNoNetWorkError(getSherlockActivity());
        }
        afterLoadData();
    }

    /**
     * 构建 Adapter ， 并且刷新显示。
     *
     */
    private void buildAndShowAdapter(){
        PickClassAdapter listadapter = new PickClassAdapter(
                getSherlockActivity(),
                R.layout.pickclassinfo_listitem, list);
        adapter = UIHelper.buildEffectAdapter(listadapter,
                (AbsListView) listView,EXPANDABLE_ALPHA);
        showSuccessResult();
    }

}