Store cache files on the dir returned by getExternalCacheDir, if available.

Closes #7

Clover/app/src/main/java/com/android/volley/toolbox/Volley.java

@@ -30,7 +30,8 @@ import java.io.File;
 public class Volley {
 
     /** Default on-disk cache directory. */
-    private static final String DEFAULT_CACHE_DIR = "volley";
+    public static final String DEFAULT_CACHE_DIR = "volley";
+
 
     /**
      * Creates a default instance of the worker pool and calls {@link RequestQueue#start()} on it.
@@ -40,8 +41,10 @@ public class Volley {
      * @return A started {@link RequestQueue} instance.
      */
     public static RequestQueue newRequestQueue(Context context, HttpStack stack) {
-        File cacheDir = new File(context.getCacheDir(), DEFAULT_CACHE_DIR);
+        return newRequestQueue(context, stack, new File(context.getCacheDir(), DEFAULT_CACHE_DIR));
+    }
 
+    public static RequestQueue newRequestQueue(Context context, HttpStack stack, File cacheDir) {
         String userAgent = "volley/0";
         try {
             String packageName = context.getPackageName();

Clover/app/src/main/java/org/floens/chan/ChanApplication.java

@@ -37,6 +37,7 @@ import org.floens.chan.service.WatchService;
 import org.floens.chan.utils.IconCache;
 import org.floens.chan.utils.ThemeHelper;
 
+import java.io.File;
 import java.lang.reflect.Field;
 
 public class ChanApplication extends Application implements PinListener {
@@ -108,7 +109,8 @@ public class ChanApplication extends Application implements PinListener {
 
         IconCache.createIcons(this);
 
-        volleyRequestQueue = Volley.newRequestQueue(this);
+        File cacheDir = new File(getExternalCacheDir() != null ? getExternalCacheDir() : getCacheDir(), Volley.DEFAULT_CACHE_DIR);
+        volleyRequestQueue = Volley.newRequestQueue(this, null, cacheDir);
         imageLoader = new ImageLoader(volleyRequestQueue, new BitmapLruImageCache(1024 * 1024 * 8));
 
         databaseManager = new DatabaseManager(this);