使用Volley API我該如何解析這個低級別的JSON才能獲得這個url

Question

爲了保持這個簡單，我剪掉了很多不重要的東西。我只想要url屬性。

{ 
"meta": { 
    "status": 200, 
    "msg": "OK" 
}, 
"response": { 
    "posts": [ 
     { 
      "photos": [ 
       { 
        "original_size": { 
         "url": "LINK", 
         "width": 612, 
         "height": 612 

Answer 1

String json = "..."; 

    try { 
     JSONObject jsonObj = new JSONObject(json); 
     JSONObject respObj = jsonObj.getJSONObject("response"); 
     JSONArray posts = respObj.getJSONArray("posts"); 
     JSONObject firstPost = (JSONObject) posts.get(0); 
     JSONArray photos = firstPost.getJSONArray("photos"); 
     JSONObject firstPhoto = (JSONObject) photos.get(0); 
     JSONObject photoSize = firstPhoto.getJSONObject("original_size"); 
     String url = photoSize.getString("url"); 
     Log.e("URL:", url); 
    } catch (JSONException e) { 
     e.printStackTrace(); 
    }