http+post请求

package com.example.gouwuche2.util;

import android.os.Handler;
import android.os.Looper;

import com.google.gson.Gson;

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

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import okhttp3.logging.HttpLoggingInterceptor;

public class OKhttp {

private static volatile OKhttp mInstance;

private OkHttpClient mClient;

private Handler handler = new Handler(Looper.getMainLooper());


//单例
public static OKhttp getmInstance(){
    if(mInstance==null)
    {
        synchronized (OKhttp.class)
        {
            mInstance = new OKhttp();
        }
    }
    return mInstance;
}


//完成构造方法

private OKhttp(){
    HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
    interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);


    mClient = new OkHttpClient.Builder()
            .connectTimeout(10,TimeUnit.SECONDS)
            .readTimeout(10,TimeUnit.SECONDS)
            .writeTimeout(10,TimeUnit.SECONDS)
            .addInterceptor(interceptor)
            .build();
}

//post请求
public void getRequest(String url, Map<String,String> params, final Class clazz, final ICallBack iCallBack){
    OkHttpClient okHttpClient = new OkHttpClient();
    FormBody.Builder builder = new FormBody.Builder();

    for(Map.Entry<String,String> entry:params.entrySet())
    {
        builder.add(entry.getKey(),entry.getValue());
    }

    RequestBody requestBody = builder.build();

    Request request = new Request.Builder()
            .url(url)
            .post(requestBody)
            .build();

    Call call = okHttpClient.newCall(request);
    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, final IOException e) {
            handler.post(new Runnable() {
                @Override
                public void run() {
                    iCallBack.error(e);
                }
            });
        }
        @Override
        public void onResponse(Call call, Response response) throws IOException {
            String string = response.body().string();
            Gson gson = new Gson();
            final Object o = gson.fromJson(string, clazz);
            handler.post(new Runnable() {
                @Override
                public void run() {
                    iCallBack.success(o);
                }
            });
        }
    });
}

}