GeenDao

MyApp:

package com.bewei.greendao.app;import android.app.Application;import android.database.sqlite.SQLiteDatabase;import com.bewei.greendao.gen.DaoMaster;import com.bewei.greendao.gen.DaoSession;/** * 1. 类的用途  单例设计模式 * 2. @author forever * 3. @date 2017/11/6 15:10 */public class MyApp extends Application {    private static  MyApp mInstance;    private DaoSession daoSession;    @Override    public void onCreate() {        super.onCreate();        mInstance = this;        setDb();    }    public static MyApp getmInstance(){        return  mInstance;    }    private void setDb() {        DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(this, "bw.db", null);        SQLiteDatabase database = helper.getWritableDatabase();        DaoMaster daoMaster = new DaoMaster(database);        daoSession = daoMaster.newSession();    }    public DaoSession getDaoSessio(){        return daoSession;    }}

User:

package com.bewei.greendao.bean;import org.greenrobot.greendao.annotation.Entity;import org.greenrobot.greendao.annotation.Id;import org.greenrobot.greendao.annotation.Property;import org.greenrobot.greendao.annotation.Generated;/** * 1. 类的用途 * 2. @author forever * 3. @date 2017/11/6 14:55 */@Entitypublic class User {    @Id    private Long id;    @Property(nameInDb = "name")    private String name;    @Generated(hash = 873297011)    public User(Long id, String name) {        this.id = id;        this.name = name;    }    @Generated(hash = 586692638)    public User() {    }    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

Main:

package com.bewei.greendao;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.Toast;import com.bewei.greendao.app.MyApp;import com.bewei.greendao.bean.User;import com.bewei.greendao.gen.DaoSession;import com.bewei.greendao.gen.UserDao;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity implements View.OnClickListener {    private UserDao userDao;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        DaoSession daoSessio = MyApp.getmInstance().getDaoSessio();        userDao = daoSessio.getUserDao();    }    private void initView() {        Button bt_add = (Button) findViewById(R.id.bt_add);        Button bt_delete = (Button) findViewById(R.id.bt_delete);        Button bt_updata = (Button) findViewById(R.id.bt_updata);        Button bt_find = (Button) findViewById(R.id.bt_find);        bt_add.setOnClickListener(this);        bt_delete.setOnClickListener(this);        bt_updata.setOnClickListener(this);        bt_find.setOnClickListener(this);    }    @Override    public void onClick(View view) {        switch (view.getId()) {            case R.id.bt_add:                List<User> users = new ArrayList<>();                User user1 = new User(Long.valueOf(5), "张三");                User user2 = new User(Long.valueOf(2), "李四");                User user3 = new User(Long.valueOf(3), "王五");                User user4 = new User(Long.valueOf(4), "赵六");                users.add(user1);                users.add(user2);                users.add(user3);                users.add(user4);                for (int i=0;i<users.size();i++){                    userDao.insert(users.get(i));                }                Toast.makeText(this, "添加数据成功", Toast.LENGTH_SHORT).show();                break;            case R.id.bt_delete:                User useDelete = userDao.load(Long.valueOf(1));                userDao.delete(useDelete);//删除对象                Toast.makeText(this, "删除数据成功", Toast.LENGTH_SHORT).show();                break;            case R.id.bt_updata:                User useUpdata = userDao.load(Long.valueOf(1));                useUpdata.setName("马七");                userDao.update(useUpdata);//更新对象                break;            case R.id.bt_find:                User useFind = userDao.load(Long.valueOf(1));//查询对象                String name = useFind.getName();                Toast.makeText(this, "查询数据成功：name" + name, Toast.LENGTH_SHORT).show();                List<User> userList = userDao.loadAll();//查询集合                for (User userinfo : userList ) {                    String userinfoName = userinfo.getName();                    Toast.makeText(this, "查询数据成功：userinfoName:" + userinfoName, Toast.LENGTH_SHORT).show();                }                break;        }    }}

Other:

package com.bewei.greendao;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.Toast;import butterknife.Bind;import butterknife.ButterKnife;import butterknife.OnClick;/** * 1. 类的用途 * 2. @author forever * 3. @date 2017/11/6 15:56 */public class OtherActivity extends AppCompatActivity {    @Bind(R.id.bt_add)    Button btAdd;    @Bind(R.id.bt_delete)    Button btDelete;    @Bind(R.id.bt_updata)    Button btUpdata;    @Bind(R.id.bt_find)    Button btFind;    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //绑定控件        ButterKnife.bind(this);        btAdd.setText("add");    }  //设置监听    @OnClick({R.id.bt_add,R.id.bt_delete,R.id.bt_updata,R.id.bt_find})    public  void onClick(View view){        switch (view.getId()){            case R.id.bt_add:                Toast.makeText(this, "添加", Toast.LENGTH_SHORT).show();                break;            case R.id.bt_delete:                Toast.makeText(this, "删除", Toast.LENGTH_SHORT).show();                break;        }    }}

anim:

<?xml version="1.0" encoding="utf-8"?><LinearLayout    android:orientation="vertical"    xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"   >    <Button        android:id="@+id/bt_add"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="添加数据"        />    <Button        android:id="@+id/bt_delete"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="删除数据"        />    <Button        android:id="@+id/bt_updata"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="更新数据"        />    <Button        android:id="@+id/bt_find"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="查询数据"        /></LinearLayout>