| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.volley.toolbox; |
| |
| import com.android.volley.Cache; |
| import com.android.volley.NetworkResponse; |
| import com.android.volley.Request; |
| import com.android.volley.Response; |
| |
| import android.os.Handler; |
| import android.os.Looper; |
| |
| /** |
| * A synthetic request used for clearing the cache. |
| */ |
| public class ClearCacheRequest extends Request<Object> { |
| private final Cache mCache; |
| private final Runnable mCallback; |
| |
| /** |
| * Creates a synthetic request for clearing the cache. |
| * @param cache Cache to clear |
| * @param callback Callback to make on the main thread once the cache is clear, |
| * or null for none |
| */ |
| public ClearCacheRequest(Cache cache, Runnable callback) { |
| super(Method.GET, null, null); |
| mCache = cache; |
| mCallback = callback; |
| } |
| |
| @Override |
| public boolean isCanceled() { |
| // This is a little bit of a hack, but hey, why not. |
| mCache.clear(); |
| if (mCallback != null) { |
| Handler handler = new Handler(Looper.getMainLooper()); |
| handler.postAtFrontOfQueue(mCallback); |
| } |
| return true; |
| } |
| |
| @Override |
| public Priority getPriority() { |
| return Priority.IMMEDIATE; |
| } |
| |
| @Override |
| protected Response<Object> parseNetworkResponse(NetworkResponse response) { |
| return null; |
| } |
| |
| @Override |
| protected void deliverResponse(Object response) { |
| } |
| } |