在凌空的Andr​​oid库网的请求后，更新UI线程 [英] Update UI thread after network request in Volley Android library

问题描述

我决定给凌空一试，所以presently我必须做​​了很多REST标注的，所以我通常会创建一个RequestHandler的和ResponseHandler的类，它作为顾名思义处理请求和响应分别。我按照这种模式，这样我就不写了冗余code。我只是通过在动态查询/ URL作为参数，并使用一个开关壳体处理响应于每个请求。但我坚持了以下问题：

I decided to give Volley a try, so presently I have a lot of REST callouts to be done, so I usually create a RequestHandler and a ResponseHandler class which as their names suggest handle requests and responses respectively. I follow this pattern so that I don't write redundant code. I just pass in the dynamic query/url as parameter and using a switch case handle the response to each of the requests. But I am stuck with the below problem :

我也没办法从我所说的RequestHandler的类更新我的UI线程。我曾尝试或已经知道至今：

I have no way of updating my UI thread from where I call the RequestHandler class. What I have tried or already know so far :

1. 请用户界面元素（TextView的，列表视图）静态和更新他们的反应来后。
2. 传入的上下文参数并且接收到的响应之后更新UI。
3. 写请求和响应，内部类的活动中
4. 在摆脱抽射。

我在想，怎么你们这样做呢？是否有任何模式不是请求/响应处理器模式我跟着好？更新千篇一律的UI线程什么办法？

I was wondering, how you guys do it? Is there any pattern better than the Request/Response Handler pattern I follow? Any way of updating the UI thread following the same pattern?

在此先感谢！

推荐答案

我用凌空抽射，这是我做的。在code进去你的活动的任何地方。

I use volley, and this is what I do. The code goes anywhere in your activity.

import com.android.volley.Response.Listener;
import static com.android.volley.Response.ErrorListener;

Listener<YOURDATACLASS> successListener = new Listener<YOURDATACLASS>() {
    @Override
    public void onResponse(YOURDATACLASS data) {
        // Check to make sure that the activity hasn't been destroyed while the call was in flight.
        if (! isFinishing()) {
            //DO YOUR UI UPDATE, such as 
            TextView textview = (TextView) findViewById(R.id.yourtextview);
            textview.setText("blah blah blah");
        }
    }
};
ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            //DO SOMETHING ON FAILURE
        }

YOURAPICALL(successListener, failurelistener);

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