android中的JSON问题（对象消失）

我正在尝试制作一个小应用程序（一个来自网络图像的图像库，是我从收到的JSON文件中获得的url）。JSON的上下文如下所示：

{"images":{
    "yXVak":{
        "image_hash":"yXVak",
            "imgur_page":"http:\/\/imgur.com\/yXVak",
            "original_image":"http:\/\/imgur.com\/yXVak.gif",
            "large_thumbnail":"http:\/\/imgur.com\/yXVakl.gif",
            "small_thumbnail":"http:\/\/imgur.com\/yXVaks.gif",
                "message":"I didn't know they made you see THAT well.",
                "source":" ",
                    "date_popular":"2011-07-18 18:45:05"},

jObject =  new JSONObject(jString);
                    JSONObject jImages =  jObject.getJSONObject("images");
                    getImages(jImages);

JSONObject  jHash = jImages.getJSONObject("yXVak") ;
           String hash = jHash.getString("yXVak");
           String page = jHash.getString("http:\\/\\/imgur.com\\/yXVak");
           Image[] images = new Image[3];
           images[0] = new Image(jHash.getString("original_image"), jHash.getString("http:\\/\\/imgur.com\\/yXVak.gif"));
           images[1] = new Image(jHash.getString("large_thumbnail"), jHash.getString("http:\\/\\/imgur.com\\/yXVakl.gif"));
           images[2] = new Image(jHash.getString("small_thumbnail"), jHash.getString("http:\\/\\/imgur.com\\/yXVaks.gif"));
           String message = jHash.getString("I didn't know they made you see THAT well.");
           String source = jHash.getString(" ");
           String date = jHash.getString("2011-07-18 18:45:05");
           listOfImages.add(new ImageHash(hash, page, images, message, source, date));

。。。。。 我还有大约30多个看起来像“yXVak”的对象

现在，问题是，当我试图解析文本时，程序找不到对象“yXVak”，异常看起来是：org.json.JSONException:JSONObject[“yXVak”]找不到。 我这样解析JSON文件：

{"images":{
    "yXVak":{
        "image_hash":"yXVak",
            "imgur_page":"http:\/\/imgur.com\/yXVak",
            "original_image":"http:\/\/imgur.com\/yXVak.gif",
            "large_thumbnail":"http:\/\/imgur.com\/yXVakl.gif",
            "small_thumbnail":"http:\/\/imgur.com\/yXVaks.gif",
                "message":"I didn't know they made you see THAT well.",
                "source":" ",
                    "date_popular":"2011-07-18 18:45:05"},

jObject =  new JSONObject(jString);
                    JSONObject jImages =  jObject.getJSONObject("images");
                    getImages(jImages);

JSONObject  jHash = jImages.getJSONObject("yXVak") ;
           String hash = jHash.getString("yXVak");
           String page = jHash.getString("http:\\/\\/imgur.com\\/yXVak");
           Image[] images = new Image[3];
           images[0] = new Image(jHash.getString("original_image"), jHash.getString("http:\\/\\/imgur.com\\/yXVak.gif"));
           images[1] = new Image(jHash.getString("large_thumbnail"), jHash.getString("http:\\/\\/imgur.com\\/yXVakl.gif"));
           images[2] = new Image(jHash.getString("small_thumbnail"), jHash.getString("http:\\/\\/imgur.com\\/yXVaks.gif"));
           String message = jHash.getString("I didn't know they made you see THAT well.");
           String source = jHash.getString(" ");
           String date = jHash.getString("2011-07-18 18:45:05");
           listOfImages.add(new ImageHash(hash, page, images, message, source, date));

getImages函数如下所示：

{"images":{
    "yXVak":{
        "image_hash":"yXVak",
            "imgur_page":"http:\/\/imgur.com\/yXVak",
            "original_image":"http:\/\/imgur.com\/yXVak.gif",
            "large_thumbnail":"http:\/\/imgur.com\/yXVakl.gif",
            "small_thumbnail":"http:\/\/imgur.com\/yXVaks.gif",
                "message":"I didn't know they made you see THAT well.",
                "source":" ",
                    "date_popular":"2011-07-18 18:45:05"},

jObject =  new JSONObject(jString);
                    JSONObject jImages =  jObject.getJSONObject("images");
                    getImages(jImages);

JSONObject  jHash = jImages.getJSONObject("yXVak") ;
           String hash = jHash.getString("yXVak");
           String page = jHash.getString("http:\\/\\/imgur.com\\/yXVak");
           Image[] images = new Image[3];
           images[0] = new Image(jHash.getString("original_image"), jHash.getString("http:\\/\\/imgur.com\\/yXVak.gif"));
           images[1] = new Image(jHash.getString("large_thumbnail"), jHash.getString("http:\\/\\/imgur.com\\/yXVakl.gif"));
           images[2] = new Image(jHash.getString("small_thumbnail"), jHash.getString("http:\\/\\/imgur.com\\/yXVaks.gif"));
           String message = jHash.getString("I didn't know they made you see THAT well.");
           String source = jHash.getString(" ");
           String date = jHash.getString("2011-07-18 18:45:05");
           listOfImages.add(new ImageHash(hash, page, images, message, source, date));

通过调试，我发现jString对象看起来是正确的（文件中的整个字符串），但是jImages对象缺少两个第一个对象（“yXVak”，第二个我在这里没有显示的对象“6k9yE”）。

---

有人能帮我一下吗，我做错了什么

我想您应该在

getImages

函数中更改以下行：-

JSONObject jHash = jImages.getJSONObject("yXVak");
//Changes in this lines.
String hash = jHash.getString("image_hash");
String page = jHash.getString("imgur_page");
// Rest of your code is same.

---

请试一试。我想它会解决你的问题，

谢谢，伙计，我不相信我犯了那个愚蠢的错误，但我有一个问题：有没有办法重用这段代码（除了用所有getString（）编写一个函数），我的意思是通过循环或其他方式遍历所有JSONObject？嗨@user854787，欢迎来到StackOverFlow。我没有很好地理解你的问题。但是我告诉你，如果你的回答包含多个JSONObject

yXVak

，那么你可以通过循环。否则，你必须坚持使用getString（）。