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94 changes: 94 additions & 0 deletions
94
...614080901143/app/src/main/java/edu/hzuapps/androidlabs/com1614080901143/jsonActivity.java
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package edu.hzuapps.androidlabs.com1614080901143; | ||
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import android.support.v7.app.AppCompatActivity; | ||
import android.os.Bundle; | ||
import android.util.Log; | ||
import android.widget.ArrayAdapter; | ||
import android.widget.ListView; | ||
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import org.json.JSONArray; | ||
import org.json.JSONObject; | ||
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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; | ||
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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); | ||
} | ||
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} | ||
catch (Exception e) | ||
{ | ||
e.printStackTrace(); | ||
} | ||
} | ||
} |
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com1614080901143/app/src/main/res/layout/activity_json.xml
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<?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"> | ||
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</ListView> | ||
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</android.support.constraint.ConstraintLayout> |