This code defines a MemoryCache class that allows you to cache Bitmap objects in memory. The cache uses a LinkedHashMap with LRU ordering to keep track of the most recently accessed Bitmaps. When Bitmaps are added to the cache, the size of the cache is checked and old Bitmaps are removed to keep the cache within a certain size limit. The size of the cache is also limited by the amount of available heap memory. This implementation is useful for situations where images need to be accessed frequently, such as in an image gallery, and can help to reduce the load on the network or disk by keeping images in memory instead.