安卓解析JSON接口并显示（ AndroidStudio）

      一：我们先来看接口里面的数据怎么样的

             

Json数据

        在FireFox浏览器上能很简明的显示接口数据  

2.xml 布局文件

 3. 安卓的Http的GET请求将获取的对象数组，并解析，存到一个实体类里面

     3.1 我们先来生成一个实体类

         AndroidStudio 可以用GsonFormat轻松生成一个实体类

        File>Settings>Plugins>Browse repositories

       

  然后重启下AS 新建一个Class   用ALT+S弹出

 

 

          AS就会自动生成一个实体类

     3.2 MainActivity 代码

package com.example.administrator.bijian;

import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

import com.alibaba.fastjson.JSON;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;


public class MainActivity extends AppCompatActivity {
    private ListView Lv_main_list;
    private List TeacherList = new ArrayList();
    private ProgressDialog progressDialog;
    private MyAdapter myAdapter;



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

        Lv_main_list =(ListView) findViewById(R.id.Lv_main_list);


        //实例化进度条对话框
        progressDialog = new ProgressDialog(this);
        progressDialog.setMessage("亲，正在玩命加载中哦！");
        ////实例化适配器
         myAdapter = new MyAdapter();
         Lv_main_list.setAdapter(myAdapter);
//         Utility.setListViewHeightBasedOnChildren(Lv_main_list);
    }
      //适配器
     class MyAdapter extends BaseAdapter{

         @Override
         public int getCount() {
             return TeacherList.size();
         }

         @Override
         public Object getItem(int i) {
             return TeacherList.get(i);
         }

         @Override
         public long getItemId(int i) {
             return i;
         }

         @Override
         public View getView(int i, View view, ViewGroup viewGroup) {
             LinearLayout layout = new LinearLayout(MainActivity.this);
//             layout.setOrientation(LinearLayout.HORIZONTAL);
             layout.setOrientation(LinearLayout.VERTICAL);

             TextView textViewArea = new TextView(MainActivity.this);
             textViewArea.setText(TeacherList.get(i).getArea()+"\t"+" ");

             TextView textViewTime = new TextView(MainActivity.this);
             textViewTime.setText(TeacherList.get(i).getTime()+"\t");
//             textViewArea.setTextSize(20);

             TextView textViewHref = new TextView(MainActivity.this);
             textViewHref.setText(TeacherList.get(i).getHref()+"\t");

             TextView textViewTitle = new TextView(MainActivity.this);
             textViewTitle.setText(TeacherList.get(i).getTitle()+"\t");
             TextView textViewType = new TextView(MainActivity.this);
             textViewType.setText(TeacherList.get(i).getType()+"\t");

             layout.addView(textViewArea);
             layout.addView(textViewTime);
             layout.addView(textViewHref);
             layout.addView(textViewTitle);
             layout.addView(textViewType);



             return layout;
         }
     }


    //获取xml数据
      public void getJson(View view){
         new MyTask().execute();
      }
    //通过异步任务类获取数据
      class MyTask extends AsyncTask{
            private  JsonTeacherEntity jsonTeacherEntity;
          //准备执行
          @Override
          protected void onPreExecute() {
              super.onPreExecute();
              progressDialog.show();
          }

          @Override
          protected Object doInBackground(Object[] objects) {
              
              String path="接口URL";
              try {
                  URL url = new URL(path);
                  //获取连接对象
                  HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
                  //设置请求方式
                  httpURLConnection.setRequestMethod("GET");
                  //设置连接超时
                  httpURLConnection.setConnectTimeout(5000);
                  //获取响应码
                  int code = httpURLConnection.getResponseCode();

                  if (code==200)
                  {
                      //响应成功,获取服务器返回过来的数据
                      final InputStream is = httpURLConnection.getInputStream();
                      //测试数据
                      StringBuffer stringBuffer = new StringBuffer();
                      String str=null;
                      BufferedReader br = new BufferedReader(new InputStreamReader(is));
                      while ((str=br.readLine())!=null){
                          stringBuffer.append(str);

                      }
                      //03.使用fastJson解析Json、
                      List Teachers = JSON.parseArray(stringBuffer.toString(), JsonTeacherEntity.class);
                      for (JsonTeacherEntity TT:Teachers)
                      {
                          jsonTeacherEntity = new JsonTeacherEntity();
                          String area = TT.getArea();
                          String href = TT.getHref();
                          String time = TT.getTime();
                          String title = TT.getTitle();
                          String type = TT.getType();



                          jsonTeacherEntity.setArea(area);
                          jsonTeacherEntity.setHref(href);
                          jsonTeacherEntity.setTime(time);
                          jsonTeacherEntity.setTitle(title);
                          jsonTeacherEntity.setType(type);

                          TeacherList.add(jsonTeacherEntity);
                      }
                  }
              } catch (MalformedURLException e) {
                  e.printStackTrace();
              } catch (IOException e) {
                  e.printStackTrace();
              }
              return null;
          }
          @Override
          protected void onPostExecute(Object o) {
              super.onPostExecute(o);
              //通知适配器发生改变
              myAdapter.notifyDataSetChanged();
              //取消进度条对话框
              progressDialog.cancel();
          }

      }

}

显示的效果