RCUtilities Class Reference

Inherits from	NSObject
Declared in	RCUtilities.h

`+ dataWithBase64EncodedString:`

将 base64 编码的字符串解码并转换为 NSData 数据

+ (NSData *)dataWithBase64EncodedString:(NSString *)string

Parameters

`string`	base64 编码的字符串

Return Value

解码后的 NSData 数据

Discussion

将 base64 编码的字符串解码并转换为 NSData 数据

此方法主要用于 iOS6 解码 base64。

Declared In

RCUtilities.h

`+ base64EncodedStringFrom:`

将 NSData 数据转化并编码为 base64 的字符串

+ (NSString *)base64EncodedStringFrom:(NSData *)data

Parameters

`data`	未编码的 NSData 数据

Return Value

编码后的 base64 字符串

Discussion

将 NSData 数据转化并编码为 base64 的字符串

此方法主要用于 iOS6 编码 base64。

Declared In

RCUtilities.h

`+ scaleImage:toScale:`

scaleImage

+ (UIImage *)scaleImage:(UIImage *)image toScale:(float)scaleSize

Parameters

`image`	image
`scaleSize`	scaleSize

Return Value

scaled image

Discussion

scaleImage

Declared In

RCUtilities.h

`+ imageByScalingAndCropSize:targetSize:`

imageByScalingAndCropSize

+ (UIImage *)imageByScalingAndCropSize:(UIImage *)image targetSize:(CGSize)targetSize

Parameters

`image`	image
`targetSize`	targetSize

Return Value

image

Discussion

imageByScalingAndCropSize

Declared In

RCUtilities.h

`+ generateThumbnail:targetSize:`

generate thumbnail from image

+ (UIImage *)generateThumbnail:(UIImage *)image targetSize:(CGSize)targetSize

Parameters

`image`	image
`targetSize`	targetSize

Return Value

image

Discussion

generate thumbnail from image

Declared In

RCUtilities.h

`+ generateThumbnail:targetSize:percent:`

generate thumbnail from image

+ (UIImage *)generateThumbnail:(UIImage *)image targetSize:(CGSize)targetSize percent:(CGFloat)percent

Parameters

`image`	image
`targetSize`	targetSize
`percent`	percent

Return Value

image

Discussion

generate thumbnail from image

Declared In

RCUtilities.h

`+ compressedImageWithMaxDataLength:maxDataLength:`

compressedImageWithMaxDataLength

+ (NSData *)compressedImageWithMaxDataLength:(UIImage *)image maxDataLength:(CGFloat)maxDataLength

Parameters

`image`	image
`maxDataLength`	maxDataLength

Return Value

nsdate

Discussion

compressedImageWithMaxDataLength

Declared In

RCUtilities.h

`+ compressedImageAndScalingSize:targetSize:maxDataLen:`

compressedImageAndScalingSize

+ (NSData *)compressedImageAndScalingSize:(UIImage *)image targetSize:(CGSize)targetSize maxDataLen:(CGFloat)maxDataLen

Parameters

`image`	image
`targetSize`	targetSize
`maxDataLen`	maxDataLen

Return Value

image nsdata

Discussion

compressedImageAndScalingSize

Declared In

RCUtilities.h

`+ compressedImageAndScalingSize:targetSize:percent:`

compressedImageAndScalingSize

+ (NSData *)compressedImageAndScalingSize:(UIImage *)image targetSize:(CGSize)targetSize percent:(CGFloat)percent

Parameters

`image`	image
`targetSize`	targetSize
`percent`	percent

Return Value

image nsdata

Discussion

compressedImageAndScalingSize

Declared In

RCUtilities.h

`+ compressedImage:percent:`

compressedImage

+ (NSData *)compressedImage:(UIImage *)image percent:(CGFloat)percent

Parameters

`image`	image
`percent`	percent

Return Value

image nsdata

Discussion

compressedImage

Declared In

RCUtilities.h

`+ getTextDrawingSize:font:constrainedSize:`

获取文字显示的尺寸

+ (CGSize)getTextDrawingSize:(NSString *)text font:(UIFont *)font constrainedSize:(CGSize)constrainedSize

Parameters

`text`	文字
`font`	字体
`constrainedSize`	文字显示的容器大小

Return Value

文字显示的尺寸

Discussion

获取文字显示的尺寸

该方法在计算 iOS 7 以下系统显示的时候默认使用 NSLineBreakByTruncatingTail 模式。

Declared In

RCUtilities.h

`+ isLocalPath:`

判断是否是本地路径

+ (BOOL)isLocalPath:(NSString *)path

Parameters

`path`	路径

Return Value

是否是本地路径

Discussion

判断是否是本地路径

Declared In

RCUtilities.h

`+ isRemoteUrl:`

判断是否是网络地址

+ (BOOL)isRemoteUrl:(NSString *)url

Parameters

`url`	地址

Return Value

是否是网络地址

Discussion

判断是否是网络地址

Declared In

RCUtilities.h

`+ getCorrectedFilePath:`

获取沙盒修正后的文件路径

+ (NSString *)getCorrectedFilePath:(NSString *)localPath

Parameters

`localPath`	本地路径

Return Value

修正后的文件路径

Discussion

获取沙盒修正后的文件路径

Declared In

RCUtilities.h

`+ getFileStoragePath`

获取文件存储路径

+ (NSString *)getFileStoragePath

Discussion

获取文件存储路径

Declared In

RCUtilities.h

`+ excludeBackupKeyForURL:`

excludeBackupKeyForURL

+ (BOOL)excludeBackupKeyForURL:(NSURL *)storageURL

Parameters

`storageURL`	storageURL

Return Value

BOOL

Discussion

excludeBackupKeyForURL

Declared In

RCUtilities.h

`+ applicationDocumentsDirectory`

获取 App 的文件存放路径

+ (NSString *)applicationDocumentsDirectory

Return Value

App 的文件存放路径

Discussion

获取 App 的文件存放路径

Declared In

RCUtilities.h

`+ rongDocumentsDirectory`

获取融云 SDK 的文件存放路径

+ (NSString *)rongDocumentsDirectory

Return Value

融云 SDK 的文件存放路径

Discussion

获取融云 SDK 的文件存放路径

Declared In

RCUtilities.h

`+ rongImageCacheDirectory`

获取融云 SDK 的缓存路径

+ (NSString *)rongImageCacheDirectory

Return Value

融云 SDK 的缓存路径

Discussion

获取融云 SDK 的缓存路径

Declared In

RCUtilities.h

`+ currentSystemTime`

获取当前系统时间

+ (NSString *)currentSystemTime

Return Value

当前系统时间

Discussion

获取当前系统时间

Declared In

RCUtilities.h

`+ currentCarrier`

获取当前运营商名称

+ (NSString *)currentCarrier

Return Value

当前运营商名称

Discussion

获取当前运营商名称

Declared In

RCUtilities.h

`+ currentNetWork`

获取当前网络类型

+ (NSString *)currentNetWork

Return Value

当前网络类型

Discussion

获取当前网络类型

Declared In

RCUtilities.h

`+ currentNetworkType`

获取当前网络类型

+ (NSString *)currentNetworkType

Return Value

当前网络类型

Discussion

获取当前网络类型

Declared In

RCUtilities.h

`+ currentSystemVersion`

获取系统版本

+ (NSString *)currentSystemVersion

Return Value

系统版本

Discussion

获取系统版本

Declared In

RCUtilities.h

`+ currentDeviceModel`

获取设备型号

+ (NSString *)currentDeviceModel

Return Value

设备型号

Discussion

获取设备型号

Declared In

RCUtilities.h

`+ getNowrapString:`

获取非换行的字符串

+ (NSString *)getNowrapString:(NSString *)originalString

Parameters

`originalString`	原始的字符串

Return Value

非换行的字符串

Discussion

获取非换行的字符串

所有换行符将被替换成单个空格

Declared In

RCUtilities.h

`+ getMediaTypeString:`

获取消息类型对应的描述

+ (NSString *)getMediaTypeString:(RCMediaType)mediaType

Parameters

`mediaType`	消息类型

Return Value

描述

Discussion

获取消息类型对应的描述

Declared In

RCUtilities.h

`+ getMediaType:`

获取消息内容对应的媒体类型

+ (RCMediaType)getMediaType:(RCMessageContent *)content

Parameters

`content`	消息内容

Return Value

媒体类型，如果是不支持的媒体类型或者消息，将返回 -1

Discussion

获取消息内容对应的媒体类型

Declared In

RCUtilities.h

`+ isOpaque:`

判断一张照片是否是含透明像素的照片

+ (BOOL)isOpaque:(UIImage *)image

Parameters

`image`	原始照片

Return Value

是否包含透明像素，YES 包含， NO 不包含

Discussion

判断一张照片是否是含透明像素的照片

Declared In

RCUtilities.h

`+ encodeURL:`

URL 编码

+ (NSString *)encodeURL:(NSString *)url

Return Value

编码后的 URL

Discussion

URL 编码

Declared In

RCUtilities.h

`+ compressImage:`

+ (NSData *)compressImage:(UIImage *)sourceImage

`+ checkChatroomKey:`

检查字符串是否符合聊天室属性名称的格式

+ (BOOL)checkChatroomKey:(NSString *)key

Parameters

`key`	聊天室属性名称

Return Value

是否符合聊天室属性名称的格式，YES 符合， NO 不符合

Discussion

检查字符串是否符合聊天室属性名称的格式

Key 支持大小写英文字母、数字、部分特殊符号 + = - _ 的组合方式

Declared In

RCUtilities.h

`+ get22bBitUUID`

生成 22 位的 UUID

+ (NSString *)get22bBitUUID

Return Value

22 位的 UUID

Discussion

生成 22 位的 UUID

Declared In

RCUtilities.h

`+ getUUID`

生成 UUID

+ (NSString *)getUUID

Return Value

UUID

Discussion

生成 UUID

Declared In

RCUtilities.h

`+ getDeviceId:`

生成 DeviceId

+ (NSString *)getDeviceId:(NSString *)appKey

Return Value

DeviceId 连接改造使用的

Discussion

生成 DeviceId

Declared In

RCUtilities.h

`+ iphoneType`

获取手机型号

+ (NSString *)iphoneType

Return Value

手机型号

Discussion

获取手机型号

Declared In

RCUtilities.h

RCUtilities Class Reference

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