ok封装get，post

package com.example.okhttpfz;

import android.os.Environment;

import java.io.File;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import okhttp3.Cache;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;

public class okhttputil {

    //单例模式，把构造方法进行私有化
    private okhttputil(){};
    static OkHttpClient client;

    public static OkHttpClient getInstance(){
        if (client==null){
            //更加安全
            synchronized (okhttputil.class){
                //缓存的地方  mnt/sdcard
                File file = new File(Environment.getExternalStorageDirectory(), "cache11");
                client=new OkHttpClient().newBuilder()
                        .readTimeout(3000, TimeUnit.SECONDS) //设置读取超时时间
                        .connectTimeout(3000,TimeUnit.SECONDS)//设置连接的超时时间
                        .cache(new Cache(file,10*1024))
                        .build();

            }
        }
        return client;
    }
//get请求
    //Callback是一个接口
    public static void doGet(String url, Callback callback){
        //1拿到okhttp对象
        OkHttpClient client=getInstance();
        //进行请求的操作
        Request request=new Request.Builder()
                .url(url)
                .build();
        client.newCall(request).enqueue(callback);

    }

    //post请求
    public static void doPost(String url, Map<String,String>parms,Callback callback){
        //得到客户端对象
        OkHttpClient client=getInstance();
        //不是FormBody，而是一个builder
        FormBody.Builder body=new FormBody.Builder();
        //key value
       for (String key:parms.keySet()){
        body.add(key,parms.get(key));
        }
        Request request=new Request.Builder()
                .url(url)
                .post(body.build())
                .build();
        client.newCall(request).enqueue(callback);
    }
}