#6 #1094 231第六次实验

soft1614080902231/app/src/main/AndroidManifest.xml

@@ -1,7 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.administrator.soft1614080902231">
-
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -10,16 +15,17 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
         <activity android:name=".Soft1614080902231Activity">
-
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".SecActivity">
-
-        </activity>
+        <activity android:name=".SecActivity"></activity>
+        <activity
+            android:name=".ThreeActivity"
+            android:label="@string/title_activity_three"
+            android:theme="@style/AppTheme.NoActionBar"></activity>
     </application>
 
 </manifest>

soft1614080902231/app/src/main/java/com/example/administrator/soft1614080902231/ThreeActivity.java

@@ -0,0 +1,94 @@
+package com.example.administrator.soft1614080902231;
+
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ThreeActivity extends AppCompatActivity {
+    private ArrayAdapter<String> adapter1;
+    private ListView listView;
+    private String text;
+    private List<String> list=new ArrayList<String>();
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_three);
+        init();
+        getJson();
+    }
+    public void init() {
+        listView=(ListView)findViewById(R.id.zhongchao);
+    }
+    public void getJson() {
+        new Thread() {
+            @Override
+            public void run() {
+                try {
+                    //你的URL
+                    String url_s = "https://raw.githubusercontent.com/zglx/android-labs-2018/master/soft1614080902231/informatian.json";
+                    URL url = new URL(url_s);
+                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+                    conn.setConnectTimeout(5000);
+                    conn.setUseCaches(false);
+                    conn.connect();
+                    InputStream inputStream = conn.getInputStream();
+                    InputStreamReader input = new InputStreamReader(inputStream);
+                    BufferedReader buffer = new BufferedReader(input);
+                    if (conn.getResponseCode() == 200) {
+                        String inputLine;
+                        StringBuffer resultData = new StringBuffer();
+                        while ((inputLine = buffer.readLine()) != null) {
+                            resultData.append(inputLine);
+                        }
+                        text = resultData.toString();
+                        Log.v("out---------------->", text);
+                        parseJson();
+                    }
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+                runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
+                        adapter1 = new ArrayAdapter<String>(
+                                ThreeActivity.this, android.R.layout.simple_list_item_1, list);
+                        listView.setAdapter(adapter1);
+                    }
+                });
+            }
+        }.start();
+    }
+
+    public void parseJson() {
+        try {
+            JSONArray jsonArray = new JSONArray(text);
+            for (int i = 0; i < jsonArray.length(); i++) {
+                JSONObject person = jsonArray.getJSONObject(i);
+                String home = person.getString("home team");
+                String goal1 = person.getString("goal1");
+                String visit = person.getString("visiting team");
+                String goal2 = person.getString("goal2");
+                String msg;
+               msg= home+"              "+goal1+"        :        "+goal2+"              "+visit;
+               Log.v("结果",msg);
+               list.add(msg);
+            }
+        } catch (Exception e) {
+            Log.v("出错","Worring");
+            e.printStackTrace();
+        }
+    }
+
+}

soft1614080902231/app/src/main/res/layout/activity_three.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ThreeActivity">
+
+    <TextView
+        android:layout_width="194dp"
+        android:layout_height="106dp"
+        android:layout_alignParentTop="true"
+        android:gravity="center"
+        android:text="主队"
+        android:textSize="50dp"/>
+
+    <TextView
+        android:layout_width="192dp"
+        android:layout_height="104dp"
+        android:layout_marginLeft="180dp"
+        android:layout_alignParentTop="true"
+        android:gravity="center"
+        android:text="客队 "
+        android:textSize="50dp" />
+
+
+    <ListView
+        android:id="@+id/zhongchao"
+        android:layout_width="match_parent"
+        android:layout_height="461dp"
+        android:layout_alignParentBottom="true"
+        android:textSize="50dp" />
+</RelativeLayout>

soft1614080902231/informatian.json

@@ -0,0 +1,5 @@
+[{"home team":"广州恒大","goal1":"2","visiting team":"江苏苏宁","goal2":"1"},
+{"home team":"上海上港","goal1":"3","visiting team":"北京人和","goal2":"1"},
+{"home team":"广州富力","goal1":"0","visiting team":"天津权健","goal2":"0"},
+{"home team":"长春亚泰","goal1":"0","visiting team":"北京国安","goal2":"1"},
+{"home team":"天津泰达","goal1":"1","visiting team":"河南建业","goal2":"1"}]

soft1614080902231/report6.md

@@ -0,0 +1,29 @@
+实验六
+=
+一.实验目的
+-
+掌握Android网络访问方法<br>
+
+二.实验内容
+-
+在个人目录中创建一个表示数据的XML或JSON文件<br>
+数据文件代码提交之后从GitHub获取文件URL<br>
+在应用中通过网络编程访问GitHub的数据文件<br>
+在应用中解析并显示文件所包含的数据；<br>
+将应用运行结果截图。<br>
+
+三、实验步骤
+-
+1、在自己的Github库中创建一个JSON数据文件<br>
+2、在子线程中新建一个URL对象，使用url.openConnection()去访问URL，获得请求<br>
+3、使用输入流去读取请求的数据（也就是JSON的数据类型转换成String）<br>
+4、解析JSON，通过键取得对应的值，添加到数据类型ArrayList中<br>
+5、返回主线程去更新UI<br>
+
+四、实验截图
+-
+![](https://github.com/zglx/android-labs-2018/blob/master/soft1614080902231/r6.png)
+
+四、实验体会
+-
+这次实验获取JSON和解析JSON方法不难，就是更新UI有点困难，因为刚开始不知道子线程如果用来更新UI会造成程序终止，百度后，使用 runOnUiThread返回主线程后就可以了