先来说说代理模式的使用方法：
一、首先在application里面声明使用哪个框架
public class MyApplication extends Application { @Override public void onCreate() { super.onCreate(); //这里只需要一行代码切换网络框架，6不6！！！ //初始化Volley方式网络请求代理 HttpHelper.init(new VolleyProcessor(this)); //初始化Okhttp方式网络请求代理 //HttpHelper.init(new OkHttpProcessor()); } } 二、在代码里面具体使用
public class MainActivity extends AppCompatActivity implements View.OnClickListener { private TextView textView; private Button button; //快递接口 private String url2 = "http://www.kuaidi100.com/query?type=quanfengkuaidi&postid=300008026630"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView) findViewById(R.id.textView); button = (Button) findViewById(R.id.button); button.setOnClickListener(this); } @Override public void onClick(View v) { if (v.getId() == R.id.button) { //访问网络 HttpHelper.obtain().get(url2, null, new HttpCallback<ExpressBean>() { @Override public void onSuccess(ExpressBean expressBean) { StringBuffer sb = new StringBuffer(); if(expressBean != null){ ArrayList<ExpressBean.DataBean> datas = expressBean.data; for(ExpressBean.DataBean data : datas){ sb.append("时间：") .append(data.time+"\r\n") .append("地点和跟踪进度：") .append(data.context+"\r\n"+"\r\n"); textView.setText(sb.toString()); } } } @Override public void onFailed(String string) { Toast.makeText(MainActivity.this,"请求失败了。。"+ string,Toast.LENGTH_SHORT).show(); } }); } } } 是不是很简单？