网络工具类

package com.bawei.yuezkao1.model.http;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

import com.bawei.yuezkao1.model.api.ApiService;
import com.bawei.yuezkao1.model.constant.Constant;

import java.util.concurrent.TimeUnit;

import okhttp3.OkHttpClient;
import okhttp3.logging.HttpLoggingInterceptor;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory;

/**
 * 项目名称：
 *
 * @Author  
 * 创建时间： 
 */
public class OkHttpUtils {
    private static OkHttpUtils okHttpUtils;
    private static OkHttpClient client;
    private Retrofit retrofit;
    private ApiService apiService;
    public OkHttpUtils(){
        HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
        interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

        //构建OKHttpClient
         client = new OkHttpClient.Builder()
                .connectTimeout(5, TimeUnit.SECONDS)
                .writeTimeout(5,TimeUnit.SECONDS)
                .readTimeout(5,TimeUnit.SECONDS)
                //日志拦截器
                .addInterceptor(interceptor)
                .build();

        retrofit = new Retrofit.Builder()
                .baseUrl(Constant.BASE_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .client(client)
                .build();
    }

    public ApiService getApiService() {
        if (apiService == null) {
            apiService = retrofit.create(ApiService.class);
        }
        return apiService;
    }

    public static OkHttpUtils getOkHttpUtils() {
        if (okHttpUtils == null) {
            synchronized (OkHttpUtils.class){
                if (okHttpUtils == null) {
                    okHttpUtils = new OkHttpUtils();
                }
            }
        }
        return okHttpUtils;
    }
    public static boolean hasNetwork(Context context){
        ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = manager.getActiveNetworkInfo();
        if (networkInfo != null && networkInfo.isConnected()) {
            return true;
        }
        return false;
    }
}