1 package com.example.administrator.myapplication.activity;
2
3 import android.os.Bundle;
4 import android.os.Handler;
5 import android.os.Message;
6 import android.support.v7.app.AppCompatActivity;
7 import android.view.View;
8 import android.webkit.WebView;
9 import android.widget.Button;
10 import android.widget.Toast;
11
12 import com.example.administrator.myapplication.R;
13 import com.example.administrator.myapplication.entity.SportNews;
14
15 import org.json.JSONArray;
16 import org.json.JSONException;
17 import org.json.JSONObject;
18
19 import java.io.IOException;
20 import java.io.InputStream;
21 import java.net.HttpURLConnection;
22 import java.net.MalformedURLException;
23 import java.net.URL;
24 import java.util.ArrayList;
25 import java.util.List;
26
27 public class JsonActivity extends AppCompatActivity {
28 WebView jsonWebView;
29 Button jsonBtn;
30 @Override
31 protected void onCreate(Bundle savedInstanceState) {
32 super.onCreate(savedInstanceState);
33 setContentView(R.layout.activity_json);
34 jsonWebView = (WebView) findViewById(R.id.jsonWebView);
35 jsonBtn = (Button) findViewById(R.id.pressJson);
36 jsonBtn.setOnClickListener(new View.OnClickListener() {
37 @Override
38 public void onClick(View v) {
39 new Thread(new Runnable() {
40 @Override
41 public void run() {
42 PressJson();
43 }
44 }).start();
45 }
46 });
47 }
48 public void PressJson(){
49 InputStream is = null;
50 HttpURLConnection httpURLConnection = null;
51 StringBuilder sb = new StringBuilder();
52 try {
53 URL url = new URL("http://apis.baidu.com/txapi/weixin/wxhot?num=10&page=1&word=%E7%9B%97%E5%A2%93%E7%AC%94%E8%AE%B0");
54 httpURLConnection = (HttpURLConnection) url.openConnection();
55 httpURLConnection.setReadTimeout(5*1000);
56 httpURLConnection.setConnectTimeout(5*1000);
57 httpURLConnection.setRequestProperty("apikey","58218dcc8845195b277082c3a357f481");
58 httpURLConnection.connect();
59 if (httpURLConnection.getResponseCode() == httpURLConnection.HTTP_OK){
60 is = httpURLConnection.getInputStream();
61 byte[] bytes = new byte[1024];
62 int i = 0;
63 while ((i = is.read(bytes)) != -1){
64 sb.append(new String(bytes,0,i,"utf-8"));
65 }
66 is.close();
67 }
68 } catch (MalformedURLException e) {
69 e.printStackTrace();
70 } catch (IOException e) {
71 e.printStackTrace();
72 }finally {
73 if (httpURLConnection!= null){
74 httpURLConnection.disconnect();
75 }
76 }
77
78 Message message = handler.obtainMessage(1,sb.toString());
79 handler.sendMessage(message);
80 }
81 Handler handler = new Handler(){
82 @Override
83 public void handleMessage(Message msg) {
84 super.handleMessage(msg);
85 if (msg != null && msg.what == 1){
86 String s = (String) msg.obj;
87 jsonWebView.getSettings().setDefaultTextEncodingName("utf-8");
88 jsonWebView.getSettings().setJavaScriptEnabled(true);
89 jsonWebView.loadDataWithBaseURL(null,s,"text/html","utf-8",null);
90 //调用解析字符串的方法
91 List<SportNews> list = pressJsonToList(s);
92 SportNews sn = list.get(0);
93 Toast.makeText(getApplication(),sn.getTitle()+" "+sn.getDescription()+" "+sn.getCtime(),Toast.LENGTH_SHORT).show();
94 }
95 }
96 };
97 private List<SportNews> pressJsonToList(String s){
98 List<SportNews> list = new ArrayList<SportNews>();
99 try {
100 //将传过来的字符串先解析为JSON对象
101 JSONObject obj = new JSONObject(s);
102 String code = obj.getString("code");
103 String msg = obj.getString("msg");
104 JSONArray array = obj.getJSONArray("newslist");
105 for (int i = 0 ; i < array.length() ; i++){
106 JSONObject obj2 = array.getJSONObject(i);
107 SportNews news = new SportNews(
108 obj2.getString("ctime"),
109 obj2.getString("title"),
110 obj2.getString("description"),
111 obj2.getString("picUrl"),
112 obj2.getString("url")
113 );
114 list.add(news);
115 }
116 } catch (JSONException e) {
117 e.printStackTrace();
118 }
119 return list;
120 }
121 }
