com.ab.image.toolbox.ImageRequest类 参考

类 com.ab.image.toolbox.ImageRequest 继承关系图:

Public 成员函数
	ImageRequest (String url, Response.Listener< Bitmap > listener, int maxWidth, int maxHeight, Config decodeConfig, Response.ErrorListener errorListener)
Priority	getPriority ()

Protected 成员函数
Response< Bitmap >	parseNetworkResponse (NetworkResponse response)
void	deliverResponse (Bitmap response)

静态包函数
static int	findBestSampleSize (int actualWidth, int actualHeight, int desiredWidth, int desiredHeight)

Private 成员函数
Response< Bitmap >	doParse (NetworkResponse response)

静态 Private 成员函数
static int	getResizedDimension (int maxPrimary, int maxSecondary, int actualPrimary, int actualSecondary)

Private 属性
final Response.Listener< Bitmap >	mListener
final Config	mDecodeConfig
final int	mMaxWidth
final int	mMaxHeight

静态 Private 属性
static final int	IMAGE_TIMEOUT_MS = 1000
static final int	IMAGE_MAX_RETRIES = 2
static final float	IMAGE_BACKOFF_MULT = 2f
static final Object	sDecodeLock = new Object()

详细描述

A canned request for getting an image at a given URL and calling back with a decoded Bitmap.

构造及析构函数说明

com.ab.image.toolbox.ImageRequest.ImageRequest ( String  url, Response.Listener< Bitmap >  listener, int  maxWidth, int  maxHeight, Config  decodeConfig, Response.ErrorListener  errorListener  )

inline

Creates a new image request, decoding to a maximum specified width and height. If both width and height are zero, the image will be decoded to its natural size. If one of the two is nonzero, that dimension will be clamped and the other one will be set to preserve the image's aspect ratio. If both width and height are nonzero, the image will be decoded to be fit in the rectangle of dimensions width x height while keeping its aspect ratio.

参数

url	URL of the image
listener	Listener to receive the decoded bitmap
maxWidth	Maximum width to decode this bitmap to, or zero for none
maxHeight	Maximum height to decode this bitmap to, or zero for none
decodeConfig	Format to decode the bitmap to
errorListener	Error listener, or null to ignore errors

成员函数说明

void com.ab.image.toolbox.ImageRequest.deliverResponse ( Bitmap  response )

inlineprotected

Response<Bitmap> com.ab.image.toolbox.ImageRequest.doParse ( NetworkResponse  response )

inlineprivate

The real guts of parseNetworkResponse. Broken out for readability.

static int com.ab.image.toolbox.ImageRequest.findBestSampleSize ( int  actualWidth, int  actualHeight, int  desiredWidth, int  desiredHeight  )

inlinestaticpackage

Returns the largest power-of-two divisor for use in downscaling a bitmap that will not result in the scaling past the desired dimensions.

参数

actualWidth	Actual width of the bitmap
actualHeight	Actual height of the bitmap
desiredWidth	Desired width of the bitmap
desiredHeight	Desired height of the bitmap

Priority com.ab.image.toolbox.ImageRequest.getPriority ( )

inline

static int com.ab.image.toolbox.ImageRequest.getResizedDimension ( int  maxPrimary, int  maxSecondary, int  actualPrimary, int  actualSecondary  )

inlinestaticprivate

Scales one side of a rectangle to fit aspect ratio.

参数

maxPrimary	Maximum size of the primary dimension (i.e. width for max width), or zero to maintain aspect ratio with secondary dimension
maxSecondary	Maximum size of the secondary dimension, or zero to maintain aspect ratio with primary dimension
actualPrimary	Actual size of the primary dimension
actualSecondary	Actual size of the secondary dimension

Response<Bitmap> com.ab.image.toolbox.ImageRequest.parseNetworkResponse ( NetworkResponse  response )

inlineprotected

类成员变量说明

final float com.ab.image.toolbox.ImageRequest.IMAGE_BACKOFF_MULT = 2f

staticprivate

Default backoff multiplier for image requests

final int com.ab.image.toolbox.ImageRequest.IMAGE_MAX_RETRIES = 2

staticprivate

Default number of retries for image requests

final int com.ab.image.toolbox.ImageRequest.IMAGE_TIMEOUT_MS = 1000

staticprivate

Socket timeout in milliseconds for image requests

final Config com.ab.image.toolbox.ImageRequest.mDecodeConfig

private

final Response.Listener<Bitmap> com.ab.image.toolbox.ImageRequest.mListener

private

final int com.ab.image.toolbox.ImageRequest.mMaxHeight

private

final int com.ab.image.toolbox.ImageRequest.mMaxWidth

private

final Object com.ab.image.toolbox.ImageRequest.sDecodeLock = new Object()

staticprivate

Decoding lock so that we don't decode more than one image at a time (to avoid OOM's)

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该类的文档由以下文件生成:

• src/com/ab/image/toolbox/ImageRequest.java