2016-6

----引用自:http://greenrobot.org/greendao/   ( <=详细进站看文档 )

  

IDE : AS 2.1.2

Module中build.gradle(修改):

compile 'de.greenrobot:greendao-generator:1.3.1'

产生dao:

 public static void main(String[] args){
        // 创建集合
        Schema schema = new Schema(1,"jxj.wt.imqq.dao");
        // 表的描述
        Entity contactTable = schema.addEntity("QQContact");
        contactTable.addIdProperty().primaryKey().autoincrement();
        contactTable.addLongProperty("account");
        contactTable.addStringProperty("nick");
        contactTable.addIntProperty("avatar");

        // 引擎
        try {
                new DaoGenerator().generateAll(schema, "../IMQQ/app/src/main/java");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

操作dao db:

public void test() {
        QQContact contact01 = new QQContact();
        contact01.setAccount(110L);
        contact01.setNick("Tom");
        contact01.setAvatar(1);
        QQContact contact02 = new QQContact();
        contact02.setAccount(120L);
        contact02.setNick("Jack");
        contact02.setAvatar(2);

        SQLiteDatabase db = new DaoMaster.DevOpenHelper(mContext, "qq.db", null).getWritableDatabase();
        // 获取DaoSession(集合)
        DaoMaster master = new DaoMaster(db);  // 指明哪个数据库的增删改查
        DaoSession session = master.newSession();

        // 开始操作
        QQContactDao dao = session.getQQContactDao();
        // 增加
        dao.insert(contact01);
        dao.insert(contact02);
        // 修改
        contact02.setNick("Lucy");
        dao.update(contact02);
        // 查询
        List<QQContact> list = dao.loadAll();
        for (QQContact item:list){
            System.out.println(item.toString());
        }　　
        // 删除
        dao.deleteByKey(2L);
}

查询结果:

 删除: