JSon閱讀內部陣列

Question

嗨我正在一個動態的Android應用程序，我有以下的JSON。閱讀每一行是好的我已經想出瞭如何在java中做到這一點（請記住，我剛剛開始使用json昨天）我如何可以讀取內部數組的示例item2到Java中的ArrayList我需要某種類型的循環添加到字符串數組的屏幕截圖鏈接。感謝您對我的問題提供任何幫助。

"Manager": 
[ 
    { 
"name" : "Sample item", 
"icon" : "http://www.test.com/icon.png", 
"link" : "http://www.test.com/sample.zip", 
"summary" : "sample summary here", 
"screenshots": [ 
    "http://test.com/link2screenshot1.png", 
    "http://test.com/link2screenshot2.png" 
    ] 
    }, 
    { 
"name" : "Sample item2", 
"icon" : "http://www.test.com/icon2.png", 
"link" : "http://www.test.com/sample2.zip", 
"summary" : "sample summary here2", 
"screenshots": [ 
    "http://test.com/2/link2screenshot1.png", 
    "http://test.com/2/link2screenshot2.png" 
    ] 
} 
] 

===編輯===

好吧，這裏是最終的解決方案，下面的方法從URL中讀取一個JSON和拉什麼，我想感謝ninetwozero

public ArrayList<String> JSONInner(int count, String url, String outer, String inner){ 
    ArrayList<String> linkArrayList = new ArrayList<String>(); 
    URL u = null; 
    StringBuilder FileData = null; 
    try { 
     u = new URL(url); 
     String InputData =  null; 
     InputStream is =   null; 
     DataInputStream dis = null; 
     FileData = new StringBuilder(); 
     is = u.openStream(); 
     dis = new DataInputStream(new BufferedInputStream(is)); 
     while ((InputData = dis.readLine()) != null) { 
      FileData.append(InputData); 
     } 
     is.close(); 
    } catch (MalformedURLException e1) { 
     e1.printStackTrace(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
    JSONObject json = null; 
    try { 
     json = new JSONObject(FileData.toString()); 
    } catch (JSONException e1) { 
     e1.printStackTrace(); 
    } 
    if(FileData.toString() != null) { 
     try { 
      JSONArray managerArray = json.getJSONArray(outer); 
      JSONObject managerObject = managerArray.optJSONObject(count); 
      JSONArray linkArray = managerObject.getJSONArray(inner); 
      for(int subCount = 0, maxSubCount = linkArray.length(); subCount < maxSubCount; subCount++){ 
       linkArrayList.add(linkArray.getString(subCount)); 
      } 
     }catch (JSONException e){ 
      e.printStackTrace(); 
     } 
    } 
    return linkArrayList; 
} 

Answer 1

我會這樣做：

//Init 
ArrayList<String> linkArrayList = new ArrayList<String>(); 
JSONArray managerArray = new JSONArray(yourString); 

//Iterate over the top-level array 
for(int count = 0, max = managerArray.length(); count < max; count++) { 

    //Get the current JSONObject & the link array 
    JSONObject managerObject = managerArray.optJSONObject(count); 
    JSONArray linkArray = managerObject.getJSONArray("screenshots"); 

    //Iterate over the screenshots 
    for( 
     int subCount = 0, maxSubCount = linkArray.length(); 
     subcount < maxSubCount; 
     subCount++ 
    ) { 

     //Let's store the String 
     linkArrayList.add(linkArray.getString(subCount); 

    } 

} 

讓我知道如果這是你正在尋找的。 :-)

編輯：但是，這會給你所有的鏈接 - 如果你只是想在一個陣列項目＃2，那麼你就可以刪除外環和聲明如下：

int count = 0; //The 0 should be the index of your item