让Robolectric与Volley合作

本文介绍了让Robolectric与Volley合作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在尝试让Volley与Robolectric合作.我可以看到我的HTTP请求被调用，并且parseNetworkResponse被调用(我正在发送JsonRequest的自定义子类)，但是我的监听器没有被调用.有什么建议吗?这是一个代码示例:

I am trying to get Volley working with Robolectric. I can see that my HTTP request is getting called, and parseNetworkResponse is getting called (I'm sending a custom subclass of JsonRequest), but my Listener is NOT getting called. Any advice? Here is a code sample:

@Test public void testTypeAheadClient() throws Exception { Robolectric.getFakeHttpLayer().interceptHttpRequests(false); //mRemoteRequestQueue and mCustomRequest are set up previously mRemoteRequestQueue.add(mCustomRequest); } private static class CustomRequest extends JsonRequest<MyObject> { public CustomRequest(String url, Response.Listener<MyObject> listener, Response.ErrorListener errorListener) { super(Request.Method.GET, url, null, listener, errorListener); } @Override protected Response<MyObject> parseNetworkResponse(NetworkResponse response) { System.out.println("in parseNetworkResponse"); try { MyObject myObject = new MyObject(new JSONArray(new String(response.data, "UTF-8"))); return Response.success(myObject, HttpHeaderParser.parseCacheHeaders(response)); } catch (Exception e) { e.printStackTrace(); return Response.error(new ParseError(e)); } } }

推荐答案

我通过将RequestQueue的ResponseDelivery替换为不使用Looper.getMainLooper()而是使用新的Executor的方法来解决了相同的问题.示例代码:

I solved that same problem by replacing the RequestQueue's ResponseDelivery with one that doesn't use the Looper.getMainLooper() but a new Executor. Example code:

public static RequestQueue newRequestQueueForTest(final Context context, final OkHttpClient okHttpClient) { final File cacheDir = new File(context.getCacheDir(), "volley"); final Network network = new BasicNetwork(new OkHttpStack(okHttpClient)); final ResponseDelivery responseDelivery = new ExecutorDelivery(Executors.newSingleThreadExecutor()); final RequestQueue queue = new RequestQueue( new DiskBasedCache(cacheDir), network, 4, responseDelivery); queue.start(); return queue; }

注意:使用Robolectric-2.2-SNAPSHOT，以前的版本在Volley上不能很好地发挥作用.

Note: use Robolectric-2.2-SNAPSHOT, the previous version doesn't play well with Volley.

希望这会有所帮助