in.srain.cube.image

Class ImageProvider

java.lang.Object

in.srain.cube.image.ImageProvider

public class ImageProvider
extends java.lang.Object

This class handles disk and memory caching of bitmaps.

Most of the code is taken from the Android best practice of displaying Bitmaps Displaying Bitmaps Efficiently.

Field Summary

Fields

Modifier and Type	Field and Description
protected static boolean	DEBUG
protected static java.lang.String	TAG

Constructor Summary

Constructors

Constructor and Description
ImageProvider(android.content.Context context, ImageMemoryCache memoryCache, ImageDiskCacheProvider fileProvider)

Method Summary

Methods

Modifier and Type	Method and Description
void	addBitmapToMemCache(java.lang.String key, android.graphics.drawable.BitmapDrawable drawable)
void	cancelTask(ImageTask task)
void	clearDiskCache() clear the disk cache
void	clearMemoryCache() clear the memory cache
android.graphics.drawable.BitmapDrawable	createBitmapDrawable(android.content.res.Resources resources, android.graphics.Bitmap bitmap) Create a BitmapDrawable which can be managed in ImageProvider
android.graphics.Bitmap	fetchBitmapData(ImageLoader imageLoader, ImageTask imageTask, ImageReSizer imageReSizer) Get Bitmap.
void	flushFileCache()
android.graphics.drawable.BitmapDrawable	getBitmapFromMemCache(ImageTask imageTask) Get from memory cache.
static long	getBitmapSize(android.graphics.drawable.BitmapDrawable value) Get the size in bytes of a bitmap in a BitmapDrawable.
long	getFileCacheMaxSpace()
java.lang.String	getFileCachePath() return the file cache path
long	getFileCacheUsedSpace() get the used space
long	getMemoryCacheMaxSpace()
long	getMemoryCacheUsedSpace()

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

protected static final boolean DEBUG

TAG

protected static final java.lang.String TAG

Constructor Detail

ImageProvider

public ImageProvider(android.content.Context context,
             ImageMemoryCache memoryCache,
             ImageDiskCacheProvider fileProvider)

Method Detail

getBitmapSize

public static long getBitmapSize(android.graphics.drawable.BitmapDrawable value)

Get the size in bytes of a bitmap in a BitmapDrawable. Note that from Android 4.4 (KitKat) onward this returns the allocated memory size of the bitmap which can be larger than the actual bitmap data byte count (in the case it was re-used).

Parameters:

value -

Returns:

size in bytes

createBitmapDrawable

public android.graphics.drawable.BitmapDrawable createBitmapDrawable(android.content.res.Resources resources,
                                                            android.graphics.Bitmap bitmap)

Create a BitmapDrawable which can be managed in ImageProvider

Parameters:

resources -

bitmap -

Returns:

getBitmapFromMemCache

public android.graphics.drawable.BitmapDrawable getBitmapFromMemCache(ImageTask imageTask)

Get from memory cache.

addBitmapToMemCache

public void addBitmapToMemCache(java.lang.String key,
                       android.graphics.drawable.BitmapDrawable drawable)

cancelTask

public void cancelTask(ImageTask task)

fetchBitmapData

public android.graphics.Bitmap fetchBitmapData(ImageLoader imageLoader,
                                      ImageTask imageTask,
                                      ImageReSizer imageReSizer)

Get Bitmap. If not exist in file cache, will try to re-use the file cache of the other sizes.

If no file cache can be used, download then save to file.

flushFileCache

public void flushFileCache()

clearMemoryCache

public void clearMemoryCache()

clear the memory cache

clearDiskCache

public void clearDiskCache()

clear the disk cache

getMemoryCacheMaxSpace

public long getMemoryCacheMaxSpace()

getMemoryCacheUsedSpace

public long getMemoryCacheUsedSpace()

getFileCachePath

public java.lang.String getFileCachePath()

return the file cache path

Returns:

getFileCacheUsedSpace

public long getFileCacheUsedSpace()

get the used space

Returns:

getFileCacheMaxSpace

public long getFileCacheMaxSpace()