1,compile 'org.xutils:xutils:3.3.40'

2.

import org.xutils.x;
public class MyApp extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        x.Ext.init(this);//这点有点怪怪不知道为啥小写，而且需要手动导入包
        x.Ext.setDebug(BuildConfig.DEBUG); // 是否输出debug日志, 开启debug会影响性能.
    }
}

3.常用请求封装（不很完善）

package com.example.administrator.xutilsdemo;

import android.util.Log;
import android.view.View;
import android.widget.ImageView;

import org.xutils.common.Callback;
import org.xutils.http.RequestParams;
import org.xutils.x;

import java.util.Map;

/**
 * Created by Administrator on 2017/1/19.
 */
public class XutilsNetUtils {
   public interface GscCallBack{
        public void onSuccess(String result);
        public void onError(Throwable ex, boolean isOnCallback);
    }
    public void doGet(Map<String,String>map, String URL, final GscCallBack callBack){
        RequestParams entiy=new RequestParams(URL);
        if (map!=null){
            for(Map.Entry<String,String> m:map.entrySet()){
                entiy.addBodyParameter(m.getKey(),m.getValue());
            }
        }
          x.http().get(entiy, new Callback.CacheCallback<String>() {
            @Override
            public void onSuccess(String result) {

                callBack.onSuccess(result);
            }
            @Override
            public void onError(Throwable ex, boolean isOnCallback) {
             callBack.onError(ex,isOnCallback);
            }
            @Override
            public void onCancelled(CancelledException cex) {

            }
            @Override
            public void onFinished() {

            }
            @Override
            public boolean onCache(String result) {
                return false;
            }
        });

    }
    public void doPost(Map<String,String>map, String URL, final GscCallBack callBack){
        RequestParams entiy=new RequestParams(URL);
        if (map!=null){
            for(Map.Entry<String,String> m:map.entrySet()){
                entiy.addBodyParameter(m.getKey(),m.getValue());
            }
        }
       x.http().post(entiy, new Callback.CommonCallback<String>() {
           @Override
           public void onSuccess(String result) {
               callBack.onSuccess(result);
           }
           @Override
           public void onError(Throwable ex, boolean isOnCallback) {
               callBack.onError(ex,isOnCallback);
           }
           @Override
           public void onCancelled(CancelledException cex) {

           }
           @Override
           public void onFinished() {
           }
       });
    }
    public void loadImage(String Url, ImageView v){
        x.image().bind(v,Url);
    }
}

package com.example.administrator.myplayerdemo.activitys;

import org.xutils.db.annotation.Column;
import org.xutils.db.annotation.Table;

/**
 * Created by Administrator on 2017/3/10 0010.
 */
@Table(name="db")//和数据库表明对应
public class Movies {
    //isId=true autoGen=true 表示是不是主键，是不是自动增长
    @Column(name="id",isId=true,autoGen=true)
    private int id;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }
    @Column(name = "name")
    private String name;
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

package com.example.administrator.myplayerdemo.activitys;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import com.example.administrator.myplayerdemo.MyApp;
import com.example.administrator.myplayerdemo.R;

import org.xutils.DbManager;
import org.xutils.ex.DbException;
import org.xutils.view.annotation.ContentView;
import org.xutils.view.annotation.Event;
import org.xutils.view.annotation.ViewInject;
import org.xutils.x;

import java.io.File;
import java.util.List;

/**
 * Created by Administrator on 2017/3/10 0010.
 * 添加地址到数据库
 */
@ContentView(value = R.layout.a)
public class AddPage extends Activity {
    private DbManager db;
    @ViewInject(R.id.tv)
    private TextView tv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.a);
        //初始化db 配置 设置数据库名字,版本号
        x.view().inject(this);
        initdbconfig();
        tv.setText("lalala");
    }
    public void add(View view){

         try {
            Movies m=new Movies();//创建bean
            m.setName("zhangsan");//Model赋值
            db.save(m);//保存到db
            Toast.makeText(getApplicationContext(),"插入数据成功！",Toast.LENGTH_LONG).show();
        } catch (DbException e) {
            e.printStackTrace();
        }

    }
    @Event(value = R.id.tv,type = View.OnClickListener.class)
    private void click(View v){
     Toast.makeText(getApplicationContext(),"点我干毛线",Toast.LENGTH_LONG).show();
    }
    private void initdbconfig() {
        DbManager.DaoConfig daoConfig = new DbManager.DaoConfig()
                .setDbName("db.db")
                .setAllowTransaction(true)
                .setDbVersion(1)
                .setDbUpgradeListener(new DbManager.DbUpgradeListener() {
                    @Override
                    public void onUpgrade(DbManager db, int oldVersion, int newVersion) {

                        // db.addColumn(...);
                        // db.dropTable(...);
                        // ...
                        //更新数据库
                    }
                });
        db = x.getDb(daoConfig);//创建db管理对象
    }

    public  void selectdb(View view ){
    if (db!=null){
        try {
            List<Movies> all = db.findAll(Movies.class);//查询所有
            //db.findById(Movies.class,1); 根据id查询
//            Movies first = db.findFirst(Movies.class);查询第一条数据
//            Log.i("gsc",first.getName()+"******"+first.getId());
            for (int i=0;i<all.size();i++){
                String name = all.get(i).getName();
                int id = all.get(i).getId();
                Log.i("gsc",name+id);
            }
        } catch (DbException e) {
            e.printStackTrace();
        }
    }
    else{
        Toast.makeText(getApplicationContext(),"请先插入数据！",Toast.LENGTH_LONG).show();
    }

}
}