com.nostra13.universalimageloader.cache.memory.impl

Class LruMemoryCache

java.lang.Object

com.nostra13.universalimageloader.cache.memory.impl.LruMemoryCache

All Implemented Interfaces:

MemoryCache

public class LruMemoryCache
extends java.lang.Object
implements MemoryCache

A cache that holds strong references to a limited number of Bitmaps. Each time a Bitmap is accessed, it is moved to the head of a queue. When a Bitmap is added to a full cache, the Bitmap at the end of that queue is evicted and may become eligible for garbage collection.

NOTE: This cache uses only strong references for stored Bitmaps.

Since:

1.8.1

Constructor Summary

Constructors

Constructor and Description
LruMemoryCache(int maxSize)

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Remove all items from cache
android.graphics.Bitmap	get(java.lang.String key) Returns the Bitmap for key if it exists in the cache.
java.util.Collection<java.lang.String>	keys() Returns all keys of cache
boolean	put(java.lang.String key, android.graphics.Bitmap value) Caches Bitmap for key.
android.graphics.Bitmap	remove(java.lang.String key) Removes the entry for key if it exists.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LruMemoryCache

public LruMemoryCache(int maxSize)

Parameters:

maxSize - Maximum sum of the sizes of the Bitmaps in this cache

Method Detail

get

public final android.graphics.Bitmap get(java.lang.String key)

Returns the Bitmap for key if it exists in the cache. If a Bitmap was returned, it is moved to the head of the queue. This returns null if a Bitmap is not cached.

Specified by:

get in interface MemoryCache

put

public final boolean put(java.lang.String key,
          android.graphics.Bitmap value)

Caches Bitmap for key. The Bitmap is moved to the head of the queue.

Specified by:

put in interface MemoryCache

Returns:

true - if value was put into cache successfully, false - if value was not put into cache

remove

public final android.graphics.Bitmap remove(java.lang.String key)

Removes the entry for key if it exists.

Specified by:

remove in interface MemoryCache

keys

public java.util.Collection<java.lang.String> keys()

Description copied from interface: MemoryCache

Returns all keys of cache

Specified by:

keys in interface MemoryCache

clear

public void clear()

Description copied from interface: MemoryCache

Remove all items from cache

Specified by:

clear in interface MemoryCache

toString

public final java.lang.String toString()

Overrides:

toString in class java.lang.Object