SampleVolleyFactory.java

/*
 * This file provided by Facebook is for non-commercial testing and evaluation
 * purposes only.  Facebook reserves all rights not expressly granted.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.facebook.fresco.sample.configs.volley;

import android.content.Context;

import com.android.volley.RequestQueue;
import com.android.volley.toolbox.BasicNetwork;
import com.android.volley.toolbox.DiskBasedCache;
import com.android.volley.toolbox.HurlStack;
import com.android.volley.toolbox.ImageLoader;
import com.facebook.fresco.sample.configs.ConfigConstants;

import java.io.File;

/**
 * Creates singletons of relevant volley classes
 */
public class SampleVolleyFactory {
  private static final String VOLLEY_CACHE_DIR = "volley";

  private static ImageLoader sImageLoader;
  private static RequestQueue sRequestQueue;
  private static VolleyMemoryCache sMemoryCache;

  public static RequestQueue getRequestQueue(Context context) {
    if (sRequestQueue == null) {
      File cacheDir = new File(context.getCacheDir(), VOLLEY_CACHE_DIR);
      sRequestQueue = new RequestQueue(
          new DiskBasedCache(cacheDir, ConfigConstants.MAX_DISK_CACHE_SIZE),
          new BasicNetwork(new HurlStack()));
      sRequestQueue.start();
    }
    return sRequestQueue;
  }


  public static VolleyMemoryCache getMemoryCache() {
    if (sMemoryCache == null) {
      sMemoryCache = new VolleyMemoryCache(ConfigConstants.MAX_MEMORY_CACHE_SIZE);
    }
    return sMemoryCache;
  }

  public static ImageLoader getImageLoader(Context context) {
    if (sImageLoader == null) {
      sImageLoader = new ImageLoader(getRequestQueue(context), getMemoryCache());
    }
    return sImageLoader;
  }
}