这是我的Andr​​oid应用程序，我需要使用返回我JSON格式的对象列表的RESTful Web服务。 这个列表可能会很长（约1000/2000对象。）。

From my Android application I need to use a RESTful web service that returns me a list of objects in json format. This list can be very long (about 1000/2000 object.).

我需要做的是搜索和retrive只是一些对象的JSON文件中。

What I need to do is to search and retrive just some of the objects inside the json file.

由于移动设备的内存有限，我的想法是使用对象结合（例如使用GSON库）可能是危险的。

Due to the limited memory of mobile device, I was thinking that using object-binding (using for example GSON library) can be dangerous.

这是解决这个问题的办法吗？

Which are the alternatives for solving this problem?

推荐答案

如果您使用的是GSON，使用GSON流。

我从链接添加样本，并添加我的评论里面它：

I've added the sample from the link and added my comment inside of it:

public List<Message> readJsonStream(InputStream in) throws IOException {
    JsonReader reader = new JsonReader(new InputStreamReader(in, "UTF-8"));
    List<Message> messages = new ArrayList<Message>();
    reader.beginArray();
    while (reader.hasNext()) {
        Message message = gson.fromJson(reader, Message.class);
        // TODO : write an if statement
        if(someCase) {
            messages.add(message);
            // if you want to use less memory, don't add the objects into an array. 
            // write them to the disk (i.e. use sql lite, shared preferences or a file...) and
            // and retrieve them when you need.
        }
    }
    reader.endArray();
    reader.close();
    return messages;
}