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