可能無法從JSON Web服務

Question

我想從jason webservice獲取數據獲取數據，

JSON的反應是：

{"content":[{"id":"1","asset_id":"62","title":"sample page","alias":"","introtext":"","fulltext":"Some Contents"},{"id":"2","asset_id":"62","title":"sample page2","alias":"","introtext":"","fulltext":"Some Contents"},{"id":"3","asset_id":"62","title":"sample page3","alias":"","introtext":"","fulltext":"Some Contents"}]} 

參觀Here 我已經在這樣做了之後：

private void parseData() { 
    // Creating JSON Parser instance 
    JSONParser jParser = new JSONParser(); 

    // getting JSON string from URL 
    JSONObject json = jParser.getJSONFromUrl(BASE_URL); 

    try { 
     // Getting Array of Contents 
     contents = json.getJSONArray(TAG_CONTENTS); 

     // looping through All Contents 
     for(int i = 0; i < contents.length(); i++){ 
      JSONObject c = contents.getJSONObject(i); 

      // Storing each json item in variable 
      id = c.getString(TAG_ID); 
      title = c.getString(TAG_TITLE);  
     } 

     textView.setText(id + " " + title); 
    } catch (JSONException e) { 
     e.printStackTrace(); 
    } 
} 

現在我得到了id = 3和title = sample page3結果現在我怎麼能得到前兩個值作爲也！！？

Answer 1

Arshay！試試這個人！

private void parseData() { 
    // Creating JSON Parser instance 
    MyJSONParser jParser = new MyJSONParser(); 

    // getting JSON string from URL 
    JSONObject json = jParser.getJSONFromUrl(BASE_URL); 

    try { 
     // Getting Array of Contents 
     jsonArrar = json.getJSONArray(TAG_CONTENTS); 
     List list = new ArrayList<String>(); 
     // looping through All Contents 
     for(int i = 0; i < jsonArrar.length(); i++){ 
      // JSONObject c = jsonArrar.getJSONObject(i); 


      String id1=jsonArrar.getJSONObject(i).getString(TAG_ID);     
      String title=jsonArrar.getJSONObject(i).getString(TAG_TITLE);    
      String fullText=jsonArrar.getJSONObject(i).getString(TAG_FULL_TEXT);     

      list.add(id1); 
      list.add(title); 
      list.add(fullText); 
     } 

     Iterator<String> iterator = list.iterator(); 
     StringBuilder builder = new StringBuilder(); 
     while (iterator.hasNext()) { 
      String string = iterator.next();     
      builder.append(string+"\n"); 

     } 

     textView.setText(builder); 
    } catch (JSONException e) { 
     e.printStackTrace(); 
    } 
} 

Answer 2

你的線路是JSONObject而不是JSONArray。

你應該使用這樣的：

JSONObject jso = new JSONObject(line); 
JSONArray jsa = new JSONArray(jso.getJSONArray("content")); 

Answer 3

嘗試是這樣的

// jsonData：響應

名單< String>的內容=新的ArrayList <字符串>（）;

String [] val;

  try { 


     JSONObject jsonObj = new JSONObject(jsonData); 
     if (jsonObj.get(JSON_ROOT_KEY) instanceof JSONArray) { 

      JSONArray array = jsonObj.optJSONArray(JSON_ROOT_KEY); 
      for (int loop = 0; loop < array.length(); loop++) { 
val = new String[loop]; 
JSONObject Jsonval = array.getJSONObject(loop); 
val.Jsonval.getString(TAG_ID); 
val.Jsonval.getString(asset_id); 

。 。 etc

contents.add（val）;

} 
} 

}