public class SharedPreTools {  //单键值存储---------------------------- public static String readShare(String sharename,String key) {  SharedPreferences user =  EdjApp.getInstance().getSharedPreferences(sharename,0);  return user.getString(key, ""); } public static void writeShare(String sharename,String key,String value ) {  SharedPreferences user = EdjApp.getInstance().getSharedPreferences(sharename, 0);  Editor editor = user.edit();  editor.putString(key, value);  editor.commit(); }    public static void removeShare(String sharename,String key ) {  SharedPreferences user = EdjApp.getInstance().getSharedPreferences(sharename, 0);  Editor editor = user.edit();  editor.remove(key);  editor.commit(); }    //多键值存储 public static void writegroup(String sharename,String key,String value) {  SharedPreferences call = EdjApp.getInstance().getSharedPreferences(sharename, 0);  String group = call.getString(key, "");  if (group.indexOf(value) < 0) {   String newgroup = group + "," + key;   Editor editor = call.edit();   editor.putString(key, newgroup);   editor.commit();  } } public static void removegroup(String sharename,String key) {  SharedPreferences call =  EdjApp.getInstance().getSharedPreferences(sharename, 0);  String group = call.getString(key, "");  String newgroup = group.replace("," + key, "");  Editor editor = call.edit();  editor.putString(key, newgroup);  editor.commit(); }    /**  * 储存单条对象  serviceInfo  * @param per_name  * @param key  * @param vaule  */ public static void saveServicePre(String per_name,String key,Object vaule){  SharedPreferences loginUserInfo = EdjApp.getInstance().    getSharedPreferences(per_name, Context.MODE_APPEND);  Editor preEd = null;  if(loginUserInfo != null){   preEd = loginUserInfo.edit();  }  if(preEd != null){   if(vaule != null){        ServiceInfo info1=(ServiceInfo)vaule;    info1.setSaveTime(getTimeId());    ByteArrayOutputStream baos = new ByteArrayOutputStream();          ObjectOutputStream oos=null;          try {          oos = new ObjectOutputStream(baos);                    oos.writeObject(info1);          } catch (IOException e) {          // TODO Auto-generated catch block          e.printStackTrace();          }    String info = new String(Base64.encodeBase64(baos.toByteArray()));    preEd.putString(key, info);   }   preEd.commit();  } }  /**  * 读取对象集合  serviceInfo  * @param per_name  * @param oblist  */ public static 
    
      List
     
       readAllServicePre(String per_name){    SharedPreferences loginUserInfo = EdjApp.getInstance().      getSharedPreferences(per_name, Context.MODE_APPEND);    Map
      
        maps = loginUserInfo.getAll();//取出所有数据      List
       
         oblist = new ArrayList
        
         ();    Iterator it = maps.values().iterator();    while(it.hasNext()){    String base64Str = (String) it.next();    byte[] base64Bytes = Base64.decodeBase64(base64Str .getBytes());    ByteArrayInputStream bais = new ByteArrayInputStream(base64Bytes);    ObjectInputStream ois;    try {      ois = new ObjectInputStream(bais);      T tempobj = (T) ois.readObject();      oblist.add(tempobj);//      LoginUser loginUser = (LoginUser)tempobj;    } catch (StreamCorruptedException e) {      // TODO Auto-generated catch block      e.printStackTrace();    } catch (IOException e) {      // TODO Auto-generated catch block      e.printStackTrace();    } catch (ClassNotFoundException e) {      // TODO Auto-generated catch block      e.printStackTrace();    }    }      ArrayList
         
          tempserviceInfo = new ArrayList
          
           (); tempserviceInfo.addAll((Collection
           ) oblist); Comparator
           
             ascComparator = new ServiceInfoComparator(); Collections.sort(tempserviceInfo, ascComparator); oblist.clear(); oblist.addAll((Collection
            ) tempserviceInfo); return oblist; } /** * 删除单条对象数据 * @param per_name * @param key */ public static void removeObjectPre(String per_name,String key){ SharedPreferences loginUserInfo = EdjApp.getInstance(). getSharedPreferences(per_name, Context.MODE_APPEND); Editor preEd = null; if(loginUserInfo != null){ preEd = loginUserInfo.edit(); } preEd.remove(key); preEd.commit(); } //当前时间为id public static long getTimeId() { Date data = new Date(); long time=data.getTime(); return time; } //--------------------------- /** * 储存单条对象 * @param per_name * @param key * @param vaule */ public static void saveObjectPre(String per_name,String key,Object vaule){ SharedPreferences loginUserInfo = EdjApp.getInstance(). getSharedPreferences(per_name, Context.MODE_APPEND); Editor preEd = null; if(loginUserInfo != null){ preEd = loginUserInfo.edit(); } if(preEd != null){ if(vaule != null){ ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos=null; try { oos = new ObjectOutputStream(baos); oos.writeObject(vaule); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } String info = new String(Base64.encodeBase64(baos.toByteArray())); preEd.putString(key, info); } preEd.commit(); } } /** * 读取对象集合 * @param per_name * @param oblist */ public static 
            
              List
             
               readAllObjectPre(String per_name){ SharedPreferences loginUserInfo = EdjApp.getInstance(). getSharedPreferences(per_name, Context.MODE_APPEND); Map
              
                maps = loginUserInfo.getAll();//取出所有数据 List
               
                 oblist = new ArrayList
                
                 (); Iterator it = maps.values().iterator(); while(it.hasNext()){ String base64Str = (String) it.next(); byte[] base64Bytes = Base64.decodeBase64(base64Str .getBytes()); ByteArrayInputStream bais = new ByteArrayInputStream(base64Bytes); ObjectInputStream ois; try { ois = new ObjectInputStream(bais); T tempobj = (T) ois.readObject(); oblist.add(tempobj); } catch (StreamCorruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return oblist; }
                
               
              
             
            
           
          
         
        
       
      
     
    

象的排序，需要 根据设置的时间来算public class ServiceInfoComparator implements Comparator
    
      { @Override public int compare(ServiceInfo object1, ServiceInfo object2) {  // TODO Auto-generated method stub  return Double.compare(object2.getSaveTime(), object1.getSaveTime()); }}