purgeDiskCache

purgeDiskCache.mirah

def self.cache_dir(c:Context):File
  @cache_dir ||= File.new(c.getCacheDir, "lazy_image_cache")
  @cache_dir.mkdirs unless @cache_dir.exists
  @cache_dir
end

def self.purgeDiskCache(c:Context):void
  thread = Thread.new do
    # 8 hours
    oldest_acceptable = System.currentTimeMillis - long(28800000)
    d = LazyImageView.cache_dir(c)

    files = d.listFiles unless d.nil?
    unless files.nil?
      files.each do |f|
        begin
          # Skip nils, directories, and current files.
          next if f.nil? || (!f.isFile) || f.lastModified >= oldest_acceptable
          Log.v "LazyImageView", "D " + f.getCanonicalPath
          f.delete
        rescue IOException => e
          Log.e "LazyImageView", "purgeDiskCache: Error checking or deleting cache file:", e
        end
      end
    end
  end
  
  # Do this on a different thread
  LazyGalleryActivity.threadPoolExecutor.execute thread
end