讀簡單的JSON在本地主機上的Android

Question

{ 
    "TopNews": [{ 
     "id": "5", 
     "title": "http:\/\/Test\/news_images\/title5", 
     "image": "http:\/\/Test\/news_images\/image5", 
     "description": "desc5", 
     "canComment": true 
    }, { 
     "id": "4", 
     "title": "http:\/\/Test\/news_images\/title4", 
     "image": "http:\/\/Test\/news_images\/image4", 
     "description": "desc4", 
     "canComment": true 
    }, { 
     "id": "3", 
     "title": "http:\/\/Test\/news_images\/title3", 
     "image": "http:\/\/Test\/news_images\/image3", 
     "description": "desc3", 
     "canComment": true 
    }, { 
     "id": "2", 
     "title": "http:\/\/Test\/news_images\/title2", 
     "image": "http:\/\/Test\/news_images\/image2", 
     "description": "description2", 
     "canComment": true 
    }, { 
     "id": "1", 
     "title": "http:\/\/Test\/news_images\/title1", 
     "image": "http:\/\/Test\/news_images\/image1", 
     "description": "desc1", 
     "canComment": true 
    }] 
} 

我想讀並顯示在我的應用程序是什麼「ID」 tag.please有人告訴我一個簡單的way.Any的幫助是非常appreciated.please傢伙。

Answer 1

http://www.vogella.com/articles/AndroidJSON/article.html

JSONArray jsonArray = new JSONArray(readTwitterFeed);..... 

看到這個簡單的例子... ，可以幫助您

Answer 2

JSONObject fullJObj = new JSONObject(myStr); 
JSONArray jArr = fullJObj.getJSONArray("TopNews"); 
for (int i = 0; i < jArr.length(); ++i) { 
    JSONObject jObj = jArr.getJSONObject(i); 
    String id = jObj.getString("id"); 
} 

欲瞭解更多信息，請訪問：

• JSONObject documentation。
• JSONArray documentation。
• JSON documentation

Answer 3

使用的JSONObject和JSONArray類。

http://developer.android.com/reference/org/json/JSONObject.html

http://developer.android.com/reference/org/json/JSONArray.html

的幅用的Android簡單的例子爬行。

基本上你需要做的是：

• 載入字符串成一個JSONObject

• 做一個JSONArray出來的TopNews的

• 經歷，並得到ID

Answer 4

通過創建自己的自定義對象個新聞擁有所有的屬性ID，標題，圖像...

然後填寫該對象在解析JSON對象如下：

import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

JSONObject json = getJSONfromURL("localhost/SericeReturnsJSONObject.whatEver"); 

try 
{ 
    ArrayList<News> alNewsListfromJson = alGetNewsList(json); 
} 
catch (JSONException e) 
{ 
    e.printStackTrace(); 
} 

---

private ArrayList<News> alGetNewsList(JSONObject json) throws JSONException { 

    JSONArray TopNews = json.getJSONArray("TopNews"); 
    News oNews = null; 
    ArrayList<News> alNewslist = new ArrayList<News>(); 

    for (int i = 0; i < TopNews.length(); i++) { 

     JSONObject oJSONObject = shows.getJSONObject(i); 
     oNews = new News(); 

     oNews.setNewsID(oJSONObject.getString("id"));  
     oNews.setNewsTitle(oJSONObject.getString("title")); 
     // .. etc 

     alNewslist.add(oNews); 
     oNews = null; 
    } 
return alNewslist; 
} 

Answer 5

JSONObject jsonObject = new JSONObject(payload); // payload is your JSON 
JSONArray my_news = jsonObject.getJSONArray("TopNews"); 

List<int> my_ids = new ArrayList<int>(); 

for (int i = 0; i < my_news.length(); i++) { 
    JSONObject my_object = my_news.getJSONObject(i); 
    int id = Integer.parseInt(my_object.getString("id")); 
    my_ids.push(id); 
} 

別當需要時，忘記圍繞try/catch。