Xutils请求网络数据

package com.bwie.xutils;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.RequestParams;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest;

public class MainActivity extends AppCompatActivity {

@Override
    protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

public void btnGet(View view) {

        xutilsGet("http://japi.juhe.cn/health_knowledge/categoryList?key=eb033dfcf95c03f9f451f6973049e6be");

    }

public void btnPost(View view) {
        xutilsPost("http://japi.juhe.cn/health_knowledge/categoryList");
    }

public void xutilsGet(String url) {
        HttpUtils utils = new HttpUtils();
        utils.send(HttpRequest.HttpMethod.GET, url, new RequestCallBack<String>() {

@Override
            public void onStart() {
super.onStart();
//开始的时候  做一些加载进度条的
            }

@Override
            public void onCancelled() {
super.onCancelled();
//取消加载的
            }

@Override
            public void onSuccess(ResponseInfo<String> responseInfo) {
                Toast.makeText(MainActivity.this, "success" + responseInfo.result.toString(), Toast.LENGTH_SHORT).show();
            }

@Override
            public void onFailure(HttpException e, String s) {
                Toast.makeText(MainActivity.this, "fail", Toast.LENGTH_SHORT).show();

            }
        });
    }

public void xutilsPost(String url) {
        HttpUtils utils = new HttpUtils();
        RequestParams params = new RequestParams();
//别忘了把params放进去
        params.addQueryStringParameter("key", "eb033dfcf95c03f9f451f6973049e6be");
        utils.send(HttpRequest.HttpMethod.POST, url, params,new RequestCallBack<String>() {
@Override
            public void onSuccess(ResponseInfo<String> responseInfo) {

                Toast.makeText(MainActivity.this, "success" + responseInfo.result.toString(), Toast.LENGTH_SHORT).show();

            }

@Override
            public void onFailure(HttpException e, String s) {

            }
        });

    }
}