Android 保存浏览记录 SharedPreTools

 SharedPreference 在Android 开发过程中，被经常运用，今天来写一下它的工具类

先介绍下 EdjApp ，属于自定义的Android Application 创建全局变量

 一、简单的数据存储方式，用来保存账号、密码等信息         

 二、用来保存多键值对象的id 等信息，如果我要获取一组自定义的存储对象，我可以先将它的id先保存下来

 三、对象类型的数据存储      一般用于自动登录、浏览历史等

 

下面是工具类，serviceinfo对象是网络获取的信息对象，我会存储并以查看时间的毫秒为对象的saveTime值

 

import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.StreamCorruptedException;import java.util.ArrayList;import java.util.Collection;import java.util.Collections;import java.util.Comparator;import java.util.Date;import java.util.Iterator;import java.util.List;import java.util.Map;import org.apache.commons.codec.binary.Base64;import android.content.Context;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;import com.maq.api.ServiceInfo;import com.maq.api.ServiceInfoComparator;import com.maq.app.EdjApp;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 <T> List<T> readAllServicePre(String per_name){  SharedPreferences loginUserInfo = EdjApp.getInstance().  getSharedPreferences(per_name, Context.MODE_APPEND);  Map<String, ?> maps = loginUserInfo.getAll();//取出所有数据      List<T> oblist = new ArrayList<T>();  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<ServiceInfo>tempserviceInfo = new ArrayList<ServiceInfo>();    tempserviceInfo.addAll((Collection<? extends ServiceInfo>) oblist);    Comparator<ServiceInfo> ascComparator = new ServiceInfoComparator(); Collections.sort(tempserviceInfo, ascComparator);oblist.clear();oblist.addAll((Collection<? extends T>) 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idpublic 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 <T> List<T> readAllObjectPre(String per_name){  SharedPreferences loginUserInfo = EdjApp.getInstance().  getSharedPreferences(per_name, Context.MODE_APPEND);  Map<String, ?> maps = loginUserInfo.getAll();//取出所有数据      List<T> oblist = new ArrayList<T>();  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;}}

 

对象的排序，需要 根据设置的时间来算

 

import java.util.Comparator;public class ServiceInfoComparator implements Comparator<ServiceInfo> {@Overridepublic int compare(ServiceInfo object1, ServiceInfo object2) {// TODO Auto-generated method stubreturn Double.compare(object2.getSaveTime(), object1.getSaveTime());}}

 

 

这样的存取就能获得查看的历史记录，同时可以延伸到通话记录，收藏等

 

个人原创，转载请注明出处：http://blog.csdn.net/ma969070578/article/details/8995737