AndroidオープンソースフレームUniversal-Ingel-loader学習なし——WeakMemoryCacheとFuzyKery MemoryCache

WeakMemoryCache ソース:
BaseMemoryCache参照：http://blog.csdn.net/woliuyunyicai/article/details/45330867

/**
 * Memory cache with {@linkplain WeakReference weak references} to {@linkplain android.graphics.Bitmap bitmaps}<br />
 * <br />
 * <b>NOTE:</b> This cache uses only weak references for stored Bitmaps.
 *
 * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
 * @since 1.5.3
 */
public class WeakMemoryCache extends BaseMemoryCache {
    @Override
    protected Reference<Bitmap> createReference(Bitmap value) {
        return new WeakReference<Bitmap>(value);
    }
}

FuzyKeyMemoryCacheソース：

/**
 * MemoryCache      。 cache        ：（  Comparator）       keys       。   key put    cache 
 *   “  ”   keys      （       class）
 * NOTE: Used for internal needs. Normally you don't need to use this class.
 */
public class FuzzyKeyMemoryCache implements MemoryCache {
 
    private final MemoryCache cache;
    private final Comparator<String> keyComparator;
 
    public FuzzyKeyMemoryCache(MemoryCache cache, Comparator<String> keyComparator) {
        this.cache = cache;
        this.keyComparator = keyComparator;
    }
 
    @Override
    public boolean put(String key, Bitmap value) {
        // Search equal key and remove this entry
        synchronized (cache) {
            String keyToRemove = null;
            for (String cacheKey : cache.keys()) {
                if (keyComparator.compare(key, cacheKey) == 0) {
                    keyToRemove = cacheKey;
                    break;
                }
            }
            if (keyToRemove != null) {
                cache.remove(keyToRemove);
            }
        }
        return cache.put(key, value);
    }
 
    @Override
    public Bitmap get(String key) {
        return cache.get(key);
    }
 
    @Override
    public Bitmap remove(String key) {
        return cache.remove(key);
    }
 
    @Override
    public void clear() {
        cache.clear();
    }
 
    @Override
    public Collection<String> keys() {
        return cache.keys();
    }
}