import java.util.concurrent.TimeUnit;

import okhttp3.OkHttpClient;

/**
 * Created by d on 2015/12/5.
 */
public class OkHttpUtils {

    private static OkHttpClient client = null;

    public static OkHttpClient getInstance(){
        if(client==null){
            synchronized (OkHttpUtils.class){
                if
 
(client==null){
                    client = new OkHttpClient.Builder()
                            .writeTimeout(20000, TimeUnit.SECONDS)
                            .connectTimeout(20000,TimeUnit.SECONDS)
                            .readTimeout(20000,TimeUnit.SECONDS)
                            .build();
                }
            }
        }
        return 
 
client;
    }
}