排球和处理数据在Android上后台返回 [英] Volley and processing data returned in background on Android

问题描述

我很难找到有关Volley和response.Listener的一些信息.

I have some troubles finding some informations about Volley and the response.Listener.

基本上，我有一个向后端询问数据的操作，该调用在后台整个Volley中进行(由Volley本身处理)，同时它在主线程上调用onResponse.

Basically I have an operation to ask data to my backend, call is made throughout Volley in background (Handled by Volley itself) meanwhile it call the onResponse on the main thread.

我需要自己执行一个可运行的操作以在后台处理这些数据吗，还是有一种方法可以强制onResponse在后台运行?

Do I need to do a runnable by myself to process theses datas in background or there is a way to force the onResponse to run in background ?

谢谢.

这是我当时正在运行的代码.

Here is the code I'm running then.

private Response.Listener<String> volleyResp = new Response.Listener<String>() {
    @override
    public void onResponse(final String jsonResp) {
        new Thread() {
            public void run() {
                // Do something ... Insert in DB for example.
            }
        }.start();
    }

推荐答案

请仔细阅读我的回复

如果要在与请求相同的线程中处理"数据，则应具有Request(或JsonRequest)的子类并实现parseNetworkResponse(NetworkResponse response)

If you want to 'process' data in the same thread as the request, you should have subclasses of Request (or JsonRequest) and implements parseNetworkResponse(NetworkResponse response)

示例:

public class TotoRequest extends JsonRequest {
    @Override
    protected Response parseNetworkResponse(NetworkResponse response) {
        try {
            String jsonString =
                    new String(response.data, HttpHeaderParser.parseCharset(response.headers));
            JSONObject jsonObject = new JSONObject(jsonString);
            // Process data here
        } catch (UnsupportedEncodingException | JSONException e) {
            return Response.error(new ParseError(e));
        }
    }
}

这是对您问题的答复，但我认为这并不是您真正想要的.

如果数据较小，则在主线程中处理数据可能更安全.

It's probably safer to either process your data in the main thread if your data is small.

如果您的数据很重要，或者要在数据库中插入/更新数据，则只需继续做您正在做的事情即可.

If your data is important, or if you want to insert/update it in a database you should simply continue doing what you are doing.

此外，我建议您使用AsyncTask而不是线程.

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