android studio http json,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 ListTeacherList = 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、

ListTeachers = 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