Code example for HashMap

Methods: clear

     * Clears the image cache used internally to improve performance. Note that for memory 
     * efficiency reasons, the cache will automatically be cleared after a certain inactivity delay. 
    public void clearCache() { 
    private void resetPurgeTimer() { 
        purgeHandler.postDelayed(purger, DELAY_BEFORE_PURGE);
     * Returns true if the current download has been canceled or if there was no download in 
     * progress on this image view. 
     * Returns false if the download in progress deals with the same url. The download is not 
     * stopped in that case.