Merge pull request #2638 from Chengzid/master

#6 #1609 第六次实验
hzuapps · Jun 2, 2018 · 4ffd7fd · 4ffd7fd
2 parents 5f69dec + 74d26d5
commit 4ffd7fd
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diff --git a/com1614080901143/app/src/main/AndroidManifest.xml b/com1614080901143/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="edu.hzuapps.androidlabs.com1614080901143">
-
+    <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"
@@ -17,7 +22,8 @@
             </intent-filter>
         </activity>
         <activity android:name=".com_1614080901143Activity" />
-        <activity android:name=".ThirdActivity"></activity>
+        <activity android:name=".ThirdActivity" />
+        <activity android:name=".jsonActivity"></activity>
     </application>
 
 </manifest>
diff --git a/...14080901143/app/src/main/java/edu/hzuapps/androidlabs/com1614080901143/ThirdActivity.java b/...14080901143/app/src/main/java/edu/hzuapps/androidlabs/com1614080901143/ThirdActivity.java
@@ -1,5 +1,6 @@
 package edu.hzuapps.androidlabs.com1614080901143;
 
+import android.content.Intent;
 import android.content.SharedPreferences;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
@@ -21,6 +22,8 @@ public void onClick(View view) {
                 SharedPreferences.Editor editor=getSharedPreferences("data",MODE_PRIVATE).edit();
                 editor.putString("便签内容",editText.getText().toString());
                 editor.apply();
+                Intent intent=new Intent(ThirdActivity.this,jsonActivity.class);
+                startActivity(intent);
             }
         });
     }

diff --git a/...614080901143/app/src/main/java/edu/hzuapps/androidlabs/com1614080901143/jsonActivity.java b/...614080901143/app/src/main/java/edu/hzuapps/androidlabs/com1614080901143/jsonActivity.java
@@ -0,0 +1,94 @@
+package edu.hzuapps.androidlabs.com1614080901143;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+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 jsonActivity extends AppCompatActivity {
+    private String text;
+    private ListView listView;
+    private ArrayAdapter<String> adapter;
+    private List<String> list=new ArrayList<>();
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_json);
+        listView=(ListView)findViewById(R.id.listview);
+        getjson();
+    }
+    public void getjson()
+    {
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    URL url = new URL("https://raw.githubusercontent.com/1614080901143/android-labs-2018/master/com1614080901143/content.json");
+                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+                    connection.setRequestMethod("GET");
+                    connection.setConnectTimeout(8000);
+                    connection.setReadTimeout(8000);
+                    connection.setUseCaches(false);
+                    connection.connect();
+                    InputStream in = connection.getInputStream();
+                    InputStreamReader input=new InputStreamReader(in);
+                    BufferedReader reader=new BufferedReader(input);
+                    if (connection.getResponseCode() == 200) {
+                        StringBuilder response = new StringBuilder();
+                        String Line;
+                        while ((Line = reader.readLine()) != null) {
+                            response.append(Line);
+                        }
+                        text = response.toString();
+                        Log.v("out---------------->",text);
+                        analyzejson();
+                    }
+                }
+                catch(Exception e)
+                {
+                    e.printStackTrace();
+                }
+                runOnUiThread(new Runnable() {
+                    @Override                    public void run() {
+                        adapter=new ArrayAdapter<String>(jsonActivity.this,android.R.layout.simple_list_item_1,list);
+                        listView.setAdapter(adapter);
+                    }
+                });
+            }
+        }).start();
+    }
+    public void analyzejson()
+    {
+        try{
+            JSONArray jsonArray=new JSONArray(text);
+            for(int a=0;a<jsonArray.length();a++)
+            {
+                JSONObject jsonObject=jsonArray.getJSONObject(a);
+                String number=jsonObject.getString("number");
+                String number1=jsonObject.getString("number1");
+                String number2=jsonObject.getString("number2");
+                String add;
+                add=number+"    "+number1+"     "+number2;
+                list.add(add);
+                Log.v("结果",add);
+            }
+
+        }
+        catch (Exception e)
+        {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/com1614080901143/app/src/main/res/drawable-v24/cjz.jpg b/com1614080901143/app/src/main/res/drawable-v24/cjz.jpg
diff --git a/com1614080901143/app/src/main/res/layout/activity_json.xml b/com1614080901143/app/src/main/res/layout/activity_json.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout 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="edu.hzuapps.androidlabs.com1614080901143.jsonActivity">
+<ListView
+    android:id="@+id/listview"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</ListView>
+
+</android.support.constraint.ConstraintLayout>
diff --git a/com1614080901143/report6.md b/com1614080901143/report6.md
@@ -0,0 +1,33 @@
+## 一.实验目标
+（1）掌握Android网络访问方法；
+
+（2）理解XML和JSON表示数据的方法。
+
+## 二.实验内容（选做了第一个）
+（1）在个人目录中创建一个表示数据的XML或JSON文件；
+
+（2）数据文件代码提交之后从GitHub获取文件URL；
+
+（3）在应用中通过网络编程访问GitHub的数据文件；
+
+（4）在应用中解析并显示文件所包含的数据；
+
+（5）将应用运行结果截图。
+
+## 三.实验步骤
+（1）通过网上的json在线编辑器，然后编写一个json文件，编写完下载到本地。
+
+（2）然后把json文件提交到自己github上的库中
+
+（3）然后在Android studio 上创建一个新的Activity,从github获取json文件URL,再通过BufferedReader对服务器的流进行读取，再调用函数进行json解析。
+
+（4）在AndroidManifest.xml添加对应代码获取网络权限
+
+（5）提交实验。
+
+## 四.实验结果
+https://github.com/Chengzid/android-labs-2018/blob/master/com1614080901143/%E5%AE%9E%E9%AA%8C%E5%85%AD%E6%88%AA%E5%9B%BE2.jpg
+https://github.com/Chengzid/android-labs-2018/blob/master/com1614080901143/%E5%AE%9E%E9%AA%8C%E5%85%AD%E6%88%AA%E5%9B%BE1.jpg
+## 五.实验体会
+1.这个实验主要考验我们对网络权限的理解，以及对json解析的理解；<br>
+2.实验过程中要特别注意json文件的格式，否则很容易出错
diff --git a/com1614080901143/实验六截图1.jpg b/com1614080901143/实验六截图1.jpg
diff --git a/com1614080901143/实验六截图2.jpg b/com1614080901143/实验六截图2.jpg