【Android数据存储】SQLite使用实例(附源码)

 
 实例: 会员信息管理
 功能：1.查看数据库 2.清空数据库 3.增加会员 4.删除会员 5.更新会员 6.查找会员
 
 数据库基类 – DBHelper.java 
   
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       package com.wirelessqa.sqlite;
 
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      import android.content.Context;
 
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      android.database.sqlite.SQLiteDatabase;
 
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      android.database.sqlite.SQLiteOpenHelper;
 
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      android.util.Log;
 
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       /**
 
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        * DBHelper继承了SQLiteOpenHelper，作为维护和管理数据库的基类
 
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      * @author bixiaopeng 2013-2-16 下午3:05:52
 
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      */
 
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      public class DBHelper  extends SQLiteOpenHelper{
 
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          static final String DB_NAME = "wirelessqa.db";
 
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      String DB_TABLE_NAME = "info";
 
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      private final int DB_VERSION=117
 
      public DBHelper(Context context) {
 
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              //Context context,String name,CursorFactory factory,int version
 
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      //factory输入null,使用默认值
 
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              super(context,DB_NAME, null,DB_VERSION);
 
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          }
 
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          //数据第一次创建的时候会调用onCreate
 
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          @Override
 
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      void onCreate(SQLiteDatabase db) {      
 
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      //创建表
 
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                db.execSQL("CREATE TABLE IF NOT EXISTS info" + 
 
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                          "(_id INTEGER PRIMARY KEY AUTOINCREMENT,name VARCHAR,age INTEGER,website STRING,weibo STRING)");
 
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      Log.i(WirelessQA.TAG, "create table");
 
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      //数据库第一次创建时onCreate方法会被调用，我们可以执行创建表的语句，当系统发现版本变化之后，会调用onUpgrade方法，我们可以执行修改表结构等语句
 
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      onUpgrade(SQLiteDatabase db,monospace!important; font-size:1em!important; border:0px!important; line-height:1.1em!important; margin:0px!important; outline:0px!important; float:none!important; vertical-align:baseline!important; position:static!important; left:auto!important; top:auto!important; right:auto!important; bottom:auto!important; height:auto!important; width:auto!important; min-height:auto!important">oldVersion,monospace!important; font-size:1em!important; border:0px!important; line-height:1.1em!important; margin:0px!important; outline:0px!important; float:none!important; vertical-align:baseline!important; position:static!important; left:auto!important; top:auto!important; right:auto!important; bottom:auto!important; height:auto!important; width:auto!important; min-height:auto!important">newVersion) {
 
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      //在表info中增加一列other
 
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      //db.execSQL("ALTER TABLE info ADD COLUMN other STRING"); 
 
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              Log.i("WIRELESSQA""update sqlite "+oldVersion+"---->"+newVersion);
 
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      }
 
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       }
 
 数据库业务操作 – DBManager.java001
 
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      java.util.ArrayList;
 
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      java.util.List;
 
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      android.content.ContentValues;
 
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      android.database.Cursor;
 
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      android.database.sqlite.SQLiteDatabase;
 
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      *DBManager是建立在DBHelper之上，封装了常用的业务方法
 
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      * @author bixiaopeng 2013-2-16 下午3:06:26
 
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      DBManager {
 
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      private DBHelper       helper;
 
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      SQLiteDatabase db;
 
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      DBManager(Context context){
 
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      helper = new DBHelper(context);
 
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      db = helper.getWritableDatabase();
 
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           * 向表info中增加一个成员信息
 
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      *
 
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      * @param memberInfo
 
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      */
 
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      add(List<MemberInfo> memberInfo) {
 
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      db.beginTransaction();// 开始事务
 
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      try {
 
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                  for (MemberInfo info : memberInfo) {
 
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                      "------add memberInfo----------"036
 
      "/" + info.age + + info.website + + info.weibo);
 
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                      // 向表info中插入数据
 
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      "INSERT INTO info VALUES(null,?,?)"Object[] { info.name,info.age,info.website,
 
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                              info.weibo });
 
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                  041
 
      db.setTransactionSuccessful();// 事务成功
 
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      } finally {
 
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      db.endTransaction();// 结束事务
 
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      /**
 
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      * @param _id
 
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      * @param name
 
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      * @param age
 
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      * @param website
 
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      * @param weibo
 
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      add(_id,monospace!important; font-size:1em!important; border:0px!important; line-height:1.1em!important; margin:0px!important; outline:0px!important; float:none!important; vertical-align:baseline!important; position:static!important; left:auto!important; top:auto!important; right:auto!important; bottom:auto!important; height:auto!important; width:auto!important; min-height:auto!important">age,String website,String weibo) {
 
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      "------add data----------"056
 
      ContentValues cv = ContentValues();
 
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      // cv.put("_id",_id);
 
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      cv.put("name" 
   
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      "age"060
 
      "website"
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      "weibo"062
 
      db.insert(DBHelper.DB_TABLE_NAME,cv);
 
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      + age + + website + + weibo);
 
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      * 通过name来删除数据
 
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      delData(String name) {
 
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      // ExecSQL("DELETE FROM info WHERE name ="+"'"+name+"'");
 
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      String[] args = { name };
 
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      db.delete(DBHelper.DB_TABLE_NAME,monospace!important; font-size:1em!important; color:blue!important; border:0px!important; line-height:1.1em!important; margin:0px!important; outline:0px!important; float:none!important; vertical-align:baseline!important; position:static!important; left:auto!important; top:auto!important; right:auto!important; bottom:auto!important; height:auto!important; width:auto!important; min-height:auto!important">"name=?" 
   
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      "delete data by " + name);
 
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      * 清空数据
 
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      clearData() {
 
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      ExecSQL("DELETE FROM info"084
 
      "clear data"085
 
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      * 通过名字查询信息,返回所有的数据
 
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      *
 
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      * @param name
 
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      ArrayList<MemberInfo> searchData(String name) {
 
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      String sql = "SELECT * FROM info WHERE name =" + "'" + name + "'"094
 
      return ExecSQLForMemberInfo(sql);
 
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      ArrayList<MemberInfo> searchAllData() {
 
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      "SELECT * FROM info"099
 
      ExecSQLForMemberInfo(sql);
 
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      * 通过名字来修改值
 
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      * @param raw
 
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      * @param rawValue
 
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      * @param whereName
 
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      updateData(String raw,String rawValue,String whereName) {
 
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      "UPDATE info SET " + raw + " =" " " + rawValue + " WHERE name =" + whereName
 
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                           112
 
      ExecSQL(sql);
 
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      117
 
      * 执行SQL命令返回list
 
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      * @param sql
 
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      * @return
 
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      ArrayList<MemberInfo> ExecSQLForMemberInfo(String sql) {
 
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      ArrayList<MemberInfo> list = ArrayList<MemberInfo>();
 
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      Cursor c = ExecSQLForCursor(sql);
 
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      while (c.moveToNext()) {
 
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      MemberInfo info = MemberInfo();
 
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      info._id = c.getInt(c.getColumnIndex("_id"));
 
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      info.name = c.getString(c.getColumnIndex());
 
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      info.age = c.getInt(c.getColumnIndex(130
 
      info.website = c.getString(c.getColumnIndex(131
 
      info.weibo = c.getString(c.getColumnIndex(132
 
      list.add(info);
 
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      c.close();
 
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      list;
 
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      * 执行一个SQL语句
 
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      ExecSQL(String sql) {
 
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      db.execSQL(sql);
 
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      "execSql: " 
   
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      catch (Exception e) {
 
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      Log.e("ExecSQL Exception" 
   
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      e.printStackTrace();
 
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      153
 
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      * 执行SQL，返回一个游标
 
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      156
【Android数据存储】SQLite使用实例(附源码)

数据库基类 – DBHelper.java

数据库业务操作 – DBManager.java

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