SQLiteUtils 是一个简单的基于Android的Sqlite数据库的操作封装，它有如下的好处:
便捷地创建表和增添表字段
灵活的数据类型处理
通过操作对象来insert或者update表记录
支持多种查询方式，支持多表自定义的复杂查询，支持分页查询
支持事务
快速开始:1.设计表:
@Table(name="t_user")public class UserModel { @Table.Column(name="user_id",type=Column.TYPE_INTEGER,isPrimaryKey=true) public Integer userId; @Table.Column(name="user_name",type=Column.TYPE_STRING,isNull=false) public String userName; @Table.Column(name="born_date",type=Column.TYPE_TIMESTAMP) public Date bornDate; @Table.Column(name="pictrue",type=Column.TYPE_BLOB) public byte[] pictrue; @Table.Column(name="is_login",type=Column.TYPE_BOOLEAN) public Boolean isLogin; @Table.Column(name="weight",type=Column.TYPE_DOUBLE) public Double weight;}2.初始化对象:
SQLiteDatabase db = context.openOrCreateDatabase("test.db", Context.MODE_PRIVATE, null);DbSqlite dbSqlite = new DbSqlite(db);IBaseDao<UserModel> userDAO = DaoFactory.createGenericDao(dbSqlite, UserModel.class);3.创建表:
userDAO.createTable();4.Insert记录:
UserModel user = new UserModel();user.userName = "darcy";user.isLogin = true;user.weight = 60.5;user.bornDate = new Date();byte[] picture = {0x1,0x2,0x3,0x4};user.pictrue = picture;userDAO.insert(user);5.Update记录:
UserModel user = new UserModel();user.weight = 88.0;userDAO.update(user, "user_name=?", "darcy");6.查询:
//单条结果查询UserModel user = userDAO.queryFirstRecord("user_name=?", "darcy");//一般查询List<UserModel> userList = userDAO.query("user_name=? and weight > ?", "darcy" , "60");//分页查询PagingList<UserModel> pagingList = userDAO.pagingQuery(null, null, 1, 3);7.事务支持:
DBTransaction.transact(mDb, new DBTransaction.DBTransactionInterface() { @Override public void onTransact() { // to do }};8.更新表(目前只支持添加字段)
@Table(name="t_user" , version=2) //修改表版本public class UserModel { //members above... //new columns @Table.Column(name="new_column_1",type=Column.TYPE_INTEGER) public Integer newColumn; @Table.Column(name="new_column_2",type=Column.TYPE_INTEGER) public Integer newColumn2;}userDAO.updateTable();缺点和不足:还没支持多对一或者一多的关系
没支持联合主键
没支持表的外键设计
其他...
实例:
SqliteLookup(Android内查看Sqlite数据库利器): https://github.com/YeDaxia/SqliteLookup
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