從wordpress json api獲取json數組的圖片url

Question

我正在致力於將新聞發佈到wordpress網站的新聞發佈到android fone應用程序。 我可以從JSON陣列測試（標題，日期，內容），但我不能從陣列獲取圖像的URL任何想法

class LoadBrkNews extends AsyncTask<String, String, String> { 

    /** 
    * Before starting background thread Show Progress Dialog 
    * */ 
    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     pDialog = new ProgressDialog(Breaking.this); 
     pDialog.setMessage("Loading News Feeds..."); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(false); 
     pDialog.show(); 
    } 

    /** 
    * getting breaking JSON 
    * */ 
    protected String doInBackground(String... args) { 
     // Building Parameters 
     List<NameValuePair> params = new ArrayList<NameValuePair>(); 

     // getting JSON string from URL 
     JSONObject json = jsonParser.makeHttpRequest(BREAK_URL, "GET", 
       params); 

     // Check your log cat for JSON reponse 
     Log.d("BREAKING NEWS JSON: ", json.toString()); 

     try { 
      if (json.getString("status").equalsIgnoreCase("ok")) { 
       breakFeeds = json.getJSONArray("posts"); 
       //breakImg = json.getJSONArray(TAG_IMAGE_URL); 


       // looping through All messages 
       for (int i = 0; i < breakFeeds.length(); i++) { 
        JSONObject c = (JSONObject) breakFeeds.getJSONObject(i); 
       // JSONObject forImg = (JSONObject) breakImg.getJSONObject(i); 
        // Storing each json item in variable 
        String id = c.getString(TAG_ID); 
        String title = c.getString(TAG_TITLE); 
        String content = c.getString(TAG_CONTENT); 
        String date = c.getString(TAG_DATE); 
        // remember to remove this line fro production 
        String urlForImage = c.getString(TAG_IMAGE_URL); 

        Log.d("attachemtent url",urlForImage); 
        // Strip off tags 

         String fcontent = content.replaceAll("<(.*?)\\>"," "); 
        // creating new HashMap 
        HashMap<String, String> map = new HashMap<String, String>(); 

        // adding each child node to HashMap key => value 
        map.put(TAG_ID, id); 
        map.put(TAG_TITLE, title); 
        map.put(TAG_CONTENT, fcontent); 
        map.put(TAG_DATE, date); 

        map.put(TAG_IMAGE_URL, urlForImage); 

        // adding HashList to ArrayList 
        breakingNewsList.add(map); 

        ObjectOutput out = new ObjectOutputStream(
          new FileOutputStream(tempFile)); 
        String toCache = breakFeeds.toString(); 
        out.writeObject(toCache); 
        out.close(); 
        Log.d("Write to Cache", "Success"); 
       } 

      } 
     } catch (JSONException e) { 
      e.printStackTrace(); 
     } catch (FileNotFoundException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     return null; 
    } 

    /** 
    * After completing background task Dismiss the progress dialog 
    * **/ 
    protected void onPostExecute(String file_url) { 
     // dismiss the dialog after getting all products 
     pDialog.dismiss(); 
     // updating UI from Background Thread 
     runOnUiThread(new Runnable() { 
      public void run() { 
       /** 
       * Updating parsed JSON data into ListView 
       * */ 
       ListAdapter adapter = new SimpleAdapter(Breaking.this, 
         breakingNewsList, R.layout.imagelayout, 
         new String[] { TAG_TITLE, TAG_CONTENT, TAG_DATE, 
           TAG_IMAGE_URL }, new int[] { 
           R.id.title, R.id.content, R.id.date,R.id.imglink }); 
       // updating listview 
       setListAdapter(adapter); 
      } 
     }); 

    } 

} 

`

Answer 1

由於您有問題只能用圖片的網址，我想它可以是 1.您的數據缺少圖像url 2. TAG_IMAGE_URL與數據中的鍵不匹配。

嘗試使用一些json解析庫來簡化操作。