NxwAppVoManager.java

/**============================================================
 * 版权： 久其软件 版权所有 (c) 
 * 包： com.jiuqi.njt.ui
 * 修改记录：
 * 日期                作者           内容
 * =============================================================
 * 2013-7-30       liyue        
 * ============================================================*/

package com.jiuqi.njt.model;

import java.io.InputStream;
import java.util.ArrayList;

import org.xmlpull.v1.XmlPullParser;

import android.content.Context;
import android.content.res.Resources.NotFoundException;
import android.graphics.drawable.Drawable;
import android.text.TextUtils;
import android.util.Xml;

import com.jiuqi.njt.R;
import com.jiuqi.njt.util.Constants;
import com.jiuqi.njt.util.UIUtil;

/**
 * <p>NxwLinkVoManager</p>
 *
 * <p>Copyright: 版权所有 (c)<br>
 * Company: 久其</p>
 *
 * @author liyue
 * @version 2013-7-30
 */

public class NxwAppVoManager{

	private ArrayList<NxwAppCategoryVo> categories = null;
	private static NxwAppVoManager _instance;

	public static NxwAppVoManager getInstance(Context context){
		if(null == _instance){
			return new NxwAppVoManager(context);
		}
		else{
			return _instance;
		}
	}

	private NxwAppVoManager(Context context){
		parseNjtXml(context);
	}

	private void parseNjtXml(Context context){
		InputStream in = null;

		try{
			in = context.getResources().openRawResource(R.raw.njt);
			Drawable ICON_DEFAULT = context.getResources().getDrawable(R.drawable.icon_app_default);
			NxwAppCategoryVo category = null;
			NxwAppVo app = null;

			XmlPullParser pullParser = Xml.newPullParser();
			pullParser.setInput(in, "UTF-8"); //为Pull解释器设置要解析的XML数据        
			int event = pullParser.getEventType();
			int id = 0;

			while(event != XmlPullParser.END_DOCUMENT){

				switch(event){

					case XmlPullParser.START_DOCUMENT:
						categories = new ArrayList<NxwAppCategoryVo>();
						break;
					case XmlPullParser.START_TAG:
						if(Constants.PARAM_APPCATEGORY.equals(pullParser.getName())){
							category = new NxwAppCategoryVo();
							String name = pullParser.getAttributeValue(null, Constants.PARAM_NAME);
							category.setName(name);
							String ico = pullParser.getAttributeValue(null, Constants.PARAM_ICO);
							//如果图标为空，显示默认
							if(TextUtils.isEmpty(ico)){
								category.setIco(ICON_DEFAULT);
							}
							else{
								//如果不为空并能找到则显示，找不到显示默认
								Drawable drawable = null;
								try{
									drawable = context.getResources().getDrawable(UIUtil.getDrawableIdByName(ico));
									category.setIco(drawable);
								}
								catch(NotFoundException e){
									category.setIco(ICON_DEFAULT);
								}
							}

							category.setId(id);
							id++;
						}
						else if(Constants.PARAM_APP.equals(pullParser.getName())){
							app = new NxwAppVo();
							String name = pullParser.getAttributeValue(null, Constants.PARAM_NAME);
							String packageName = pullParser.getAttributeValue(null, Constants.PARAM_PACKAGE);
							String activity = pullParser.getAttributeValue(null, Constants.PARAM_ACTIVITY);
							String url = pullParser.getAttributeValue(null, Constants.PARAM_URL);
							String filename = pullParser.getAttributeValue(null, Constants.PARAM_FILENAME);
							String ico = pullParser.getAttributeValue(null, Constants.PARAM_ICO);

							app.setName(name);
							app.setPackageName(packageName);
							app.setActivity(activity);
							app.setUrl(url);
							app.setFileName(filename);

							//如果图标为空，显示默认
							if(TextUtils.isEmpty(ico)){
								app.setIco(ICON_DEFAULT);
							}
							else{
								//如果不为空并能找到则显示，找不到显示默认
								Drawable drawable = null;
								try{
									drawable = context.getResources().getDrawable(UIUtil.getDrawableIdByName(ico));
									app.setIco(drawable);
								}
								catch(NotFoundException e){
									app.setIco(ICON_DEFAULT);
								}
							}
						}

						break;

					case XmlPullParser.END_TAG:
						if(Constants.PARAM_APPCATEGORY.equals(pullParser.getName())){
							categories.add(category);
							category = null;
						}
						else if(Constants.PARAM_APP.equals(pullParser.getName())){
							//apps.add(app);
							category.getSubApps().add(app);
							app = null;
						}
						break;
				}

				event = pullParser.next();
			}

			//Log.v(Constants.TAG, categories.toString());
		}
		//				catch(IOException e){
		//					e.printStackTrace();
		//					UIUtil.showMsg(context, "配置文件IO错误： " + e.getMessage());
		//				}
		catch(Exception e){
			e.printStackTrace();
		}
		finally{
			try{
				if(null != in){
					in.close();
				}
			}
			catch(Exception e){
				e.printStackTrace();
				UIUtil.showMsg(context, "配置文件IO错误： " + e.getMessage());
			}
		}
	}

	/**
	 * 得到有多少个类别，如果没有则返回一个空的列表
	 * @return ArrayList<NxwAppCategoryVo>
	 */
	public ArrayList<NxwAppCategoryVo> getAppCategories(){
		if(null == categories){
			categories = new ArrayList<NxwAppCategoryVo>();
		}
		return categories;
	}

	/**
	 * 得到指定的各个app，如果没有，返回空白列表
	 * @param id
	 * @return ArrayList<NxwAppVo>
	 */
	public ArrayList<NxwAppVo> getAppsFromCategory(int id){
		if(null == categories){
			return new ArrayList<NxwAppVo>();
		}
		NxwAppCategoryVo c = null;
		for(NxwAppCategoryVo category : categories){
			if(category.getId() == id){
				c = category;
				break;
			}
			else{
				continue;
			}
		}
		return c.getSubApps();
	}
	
	/**
	 * 得到所有的App
	 * @return ArrayList<NxwAppVo>
	 */
	public ArrayList<NxwAppVo> getAllApps(){
		ArrayList<NxwAppVo> apps = new ArrayList<NxwAppVo>();
		for(NxwAppCategoryVo c : getAppCategories()){
	        for(NxwAppVo a : c.getSubApps()){
	            apps.add(a);
            }
        }
		return apps;
	}
	
	/**
	 * 根据名称得到App，如果名称为空，返回null，如果找不到，返回null<br>
	 * 名称和njt.xml里面的appname对应
	 * @param strName
	 * @return NxwAppVo
	 */
	public NxwAppVo getAppByName(String strName){
		
		NxwAppVo app = null;
		if(TextUtils.isEmpty(strName)){
	        return app;
        }
		for(NxwAppVo a : getAllApps()){
	        if(strName.equals(a.getName())){
	            app = a;
	            break;
            }
        }
		
		return app;
	}
}