LruCache
A tiny, thread safe memory cache implementation which uses a LRU policy.
This implementation gives priority to simplicity of API. If you want to use a rich API, Use the
LruCachein Android framework.
How to use
Cache
Cache is a interface.
It provides six methods as bellow.
V get(K key)- Gets an value for the specified key.V put(K key, V value)- Puts an value in the cache for the specified key.V remove(K key)- Removes the entry for key.void clear()- Clears all the entries in the cache.int getMaxMemorySize()- Returns the max memory size of the cache.int getMemorySize()- Returns the current memory size of the cache.
LruCache
LruCache's API is definitely simple.
Cache<String, String> cache = new LruCache<>();
cache.put("a", "A");
Note
- Default cache item capacity is ten. You can change the capacity via constructor.
- Please override the
getValueSizeif you control memory size correctly.
BitmapLruCache
BitmapLruCache is the class that specialized in caching Bitmap.
private static final Bitmap A = Bitmap.createBitmap(1, 1, ALPHA_8);
Cache cache = new BitmapLruCache();
cache.put("a", A);
Test
mvn clean testSupport
Java 1.7 or greater.