GreenDao模版

工程build.gradle中:

buildscript {    repositories {        jcenter()
mavenCentral()    //加的东西
    }

dependencies {    classpath 'com.android.tools.build:gradle:2.3.3'    classpath 'org.greenrobot:greendao-gradle-plugin:3.2.2'   //加的东西}

Appbuild.gradle中:

头部:   apply plugin: 'org.greenrobot.greendao'

依赖:   compile 'org.greenrobot:greendao:3.2.2'

greendao {    schemaVersion 1    daoPackage 'com.example.greendaolianxi.gen'   //加的---包名.gen    targetGenDir 'src/main/java' }

同步,

完成之后,新建Bean类

Long类型的属性id

@Entity   //类的头部加入此注解public class Bean {

@Id   //ID属性上加入private Long wid;

最后点击AndroidStudio的头部的标题栏的Build的第二个Make Modle '*****'

出来gen文件夹,就完成了

创建数据库:

public class DBUtils {    private static volatile DBUtils instance;    private final BeanDao dao;   //gen中的...Dao类    private DBUtils(Context context) {        DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(context, "bean.db", null);        SQLiteDatabase database = helper.getWritableDatabase();        DaoMaster daoMaster = new DaoMaster(database);        DaoSession daoSession = daoMaster.newSession();        dao = daoSession.getBeanDao();   //gen中的...Dao类的方法    }    public static DBUtils getInstance(Context context){        if (instance == null) {            synchronized (DBUtils.class) {                if (null == instance) {                    instance = new DBUtils(context);                }            }        }        return instance;    }    public BeanDao getDao(){        return dao;         //返回    }}

获取数据库:注意接收的数据库返回类型是gen里的Dao类

BeanDao dao;

dao = DBUtils.getInstance(this).getDao();