com.ab.bitmap.AbImageCache类 参考

静态 Public 成员函数
static Bitmap	getBitmapFromCache (String key)
static void	addBitmapToCache (String key, Bitmap bitmap)
static void	removeBitmapFromCache (String key)
static void	removeAllBitmapFromCache ()
static String	getCacheKey (String url, int width, int height, int type)
static Runnable	getRunRunnableFromCache (String key)
static void	addToRunRunnableCache (String key, Runnable runnable)
static void	removeRunRunnableFromCache (String key)
static Runnable	getWaitRunnableFromCache (String key)
static void	addToWaitRunnableCache (String key, Runnable runnable)
static void	removeWaitRunnableFromCache (String key)

静态 Public 属性
static int	cacheSize = 8 * 1024 * 1024
static final ReentrantLock	lock = new ReentrantLock()

静态 Private 属性
static final LruCache< String, Bitmap >	bitmapCache
static final HashMap< String, Runnable >	runRunnableCache = new HashMap<String, Runnable>()
static final List< HashMap < String, Runnable > >	waitRunnableList = new ArrayList<HashMap<String, Runnable>>()

详细描述

© 2012 amsoft.cn 名称：AbImageCache.java 描述：图片缓存.

作者

还如一梦中

版本

v1.0

日期

：2013-5-23 上午10:10:53

成员函数说明

static void com.ab.bitmap.AbImageCache.addBitmapToCache ( String  key, Bitmap  bitmap  )

inlinestatic

描述：增加一个图片到缓存.

参数

key	通过url计算的缓存key
bitmap	the bitmap

static void com.ab.bitmap.AbImageCache.addToRunRunnableCache ( String  key, Runnable  runnable  )

inlinestatic

描述：增加一个正在执行线程的记录.

参数

key	通过url计算的缓存key
runnable	the runnable

static void com.ab.bitmap.AbImageCache.addToWaitRunnableCache ( String  key, Runnable  runnable  )

inlinestatic

描述：增加一个等待线程的记录.

参数

key	通过url计算的缓存key
runnable	the runnable

static Bitmap com.ab.bitmap.AbImageCache.getBitmapFromCache ( String  key )

inlinestatic

描述：从缓存中获取这个Bitmap.

参数

key

the key

返回

the bitmap from mem cache

static String com.ab.bitmap.AbImageCache.getCacheKey ( String  url, int  width, int  height, int  type  )

inlinestatic

根据url计算缓存key,这个key+后缀就是文件名.

参数

url	图片地址.
width	图片宽度.
height	图片高度.
type	处理类型.

返回

the cache key

static Runnable com.ab.bitmap.AbImageCache.getRunRunnableFromCache ( String  key )

inlinestatic

描述：从缓存中获取这个正在执行线程.

参数

key

the key

返回

the runnable

static Runnable com.ab.bitmap.AbImageCache.getWaitRunnableFromCache ( String  key )

inlinestatic

描述：从缓存中获取这个正在等待线程.

参数

key

the key

返回

the runnable

static void com.ab.bitmap.AbImageCache.removeAllBitmapFromCache ( )

inlinestatic

描述：清空缓存的Bitmap.

static void com.ab.bitmap.AbImageCache.removeBitmapFromCache ( String  key )

inlinestatic

描述：从缓存删除.

参数

key	通过url计算的缓存key

static void com.ab.bitmap.AbImageCache.removeRunRunnableFromCache ( String  key )

inlinestatic

描述：从缓存一个正在执行的线程.

参数

key	通过url计算的缓存key

static void com.ab.bitmap.AbImageCache.removeWaitRunnableFromCache ( String  key )

inlinestatic

描述：从缓存删除一个等待线程.

参数

key	通过url计算的缓存key

类成员变量说明

final LruCache<String, Bitmap> com.ab.bitmap.AbImageCache.bitmapCache

staticprivate

初始值:

= new LruCache<String, Bitmap>(cacheSize) {      
        protected int sizeOf(String key, Bitmap bitmap) { 
            return bitmap.getRowBytes() * bitmap.getHeight();        
        }

        @Override
        protected void entryRemoved(boolean evicted, String key,
                Bitmap oldValue, Bitmap newValue) {
            AbLogUtil.d(AbImageCache.class, "LruCache:移除了"+key);
        }
        
        
    }

为了加快速度，在内存中开启缓存,最新的LruCache.

int com.ab.bitmap.AbImageCache.cacheSize = 8 * 1024 * 1024

static

缓存空间大小8MB.

final ReentrantLock com.ab.bitmap.AbImageCache.lock = new ReentrantLock()

static

锁对象.

final HashMap<String, Runnable> com.ab.bitmap.AbImageCache.runRunnableCache = new HashMap<String, Runnable>()

staticprivate

正在下载中的线程.

final List<HashMap<String, Runnable> > com.ab.bitmap.AbImageCache.waitRunnableList = new ArrayList<HashMap<String, Runnable>>()

staticprivate

等待中的线程.

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该类的文档由以下文件生成:

• src/com/ab/bitmap/AbImageCache.java