JSON optString沒有得到圖片url

obj.optString（「圖片」）似乎沒有將圖片url .jpeg作爲字符串。JSON optString沒有得到圖片url

public static List<Photo> getPictures(AuthProvider provider, String source, String type) { 
List<Photo> photos = new LinkedList<Photo>(); 
if (provider.getProviderId() == Constants.FACEBOOK) { 
    final String BASE_URL_FACEBOOK = "https://graph.facebook.com/"; 
    String url = BASE_URL_FACEBOOK + source + "/feed"; 

    try { 
     Response response = provider.api(url, MethodType.GET.toString(), null, null, null); 

     Log.d("AndroidAppPhotoUtil", "Status " + response.getStatus() + " returned by facebook get query " + url); 
     if (response.getStatus() == 200) { 
      String respStr = response.getResponseBodyAsString(Constants.ENCODING); 
      JSONObject resp = new JSONObject(respStr); 
      JSONArray data = resp.optJSONArray("data"); 
      if (data != null) 
       for (int i = 0; i < data.length(); i++) { 
        JSONObject obj = data.getJSONObject(i); 
        Photo p = new Photo(); 

        p.setId(obj.optString("id")); 
        p.setPicture(obj.optString("picture")); 


        if (isEmpty(type) || type.equals(obj.optString("type"))) { 
         photos.add(p); 
        } 

       } 
     } 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
} 
return photos; 
}

。

"id": "466138393436802_466165356767439", 
     "from": { 
    "name": "Dimitri Nicolopoulos", 
    "id": "100004358376630" 
     }, 
     "to": { 
    "data": [ 
     { 
     "name": "My Test Event", 
     "start_time": "2012-11-13", 
     "location": "Saewrreritvh", 
     "id": "466138393436802" 
     } 
    ] 
     }, 
     "picture": "http://photos-a.ak.fbcdn.net/hphotos-ak-ash3/533694_123231957832083_231056016_s.jpg", 
     "link": "http://www.facebook.com/photo.php?fbid=123231957832083&set=oa.160219667456793&type=1&relevant_count=1", 
     "icon": "http://static.ak.fbcdn.net/rsrc.php/v2/yz/r/StEh3RhPvjk.gif",

來源

2012-11-11 user1797028

我說把你的JSON代碼 '{' 和 '}' 裏面，我這樣做：

String respStr = "{\"id\":\"466138393436802_466165356767439\",\"from\":{\"name\":\"Dimitri Nicolopoulos\",\"id\":\"100004358376630\"},\"to\":{\"data\":[{\"name\":\"My Test Event\",\"start_time\":\"2012-11-13\",\"location\":\"Saewrreritvh\",\"id\":\"466138393436802\"}]},\"picture\":\"http://photos-a.ak.fbcdn.net/hphotos-ak-ash3/533694_123231957832083_231056016_s.jpg\",\"link\":\"http://www.facebook.com/photo.php?fbid=123231957832083&set=oa.160219667456793&type=1&relevant_count=1\",\"icon\":\"http://static.ak.fbcdn.net/rsrc.php/v2/yz/r/StEh3RhPvjk.gif\"}"; 
    JSONObject resp = new JSONObject(respStr); 
    System.out.println(resp.get("picture"));

這工作。另外，您的數據始終爲空。「數據」實際上是在「到」鍵之下。所以你可以做

String respStr = "{\"id\":\"466138393436802_466165356767439\",\"from\":{\"name\":\"Dimitri Nicolopoulos\",\"id\":\"100004358376630\"},\"to\":{\"data\":[{\"name\":\"My Test Event\",\"start_time\":\"2012-11-13\",\"location\":\"Saewrreritvh\",\"id\":\"466138393436802\"}]},\"picture\":\"http://photos-a.ak.fbcdn.net/hphotos-ak-ash3/533694_123231957832083_231056016_s.jpg\",\"link\":\"http://www.facebook.com/photo.php?fbid=123231957832083&set=oa.160219667456793&type=1&relevant_count=1\",\"icon\":\"http://static.ak.fbcdn.net/rsrc.php/v2/yz/r/StEh3RhPvjk.gif\"}"; 
    JSONObject resp = new JSONObject(respStr); 
    JSONObject data = (JSONObject) resp.getJSONObject("to").getJSONArray("data").get(0); 
    System.out.println(data);

來源

2012-11-11 16:28:45 Sanchit

JSON optString沒有得到圖片url

回答

相關問題