iOS学习笔记之图片转NSString，再还原

// 图片转字符串
+ (NSString *)imageToString:(UIImage *)image
{
// UIImage --> NSData
NSData *imageData =
UIImageJPEGRepresentation(image, 1.0);
// NSData --> NSString
NSString *imageDataString = [imageData
base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed]; 码
return imageDataString;
}

// 字符串转图片
+ (UIImage *)imageFromString:(NSString *)string
{
// NSString --> NSData
NSData *data=[[NSData
alloc] initWithBase64EncodedString:string
options:NSDataBase64DecodingIgnoreUnknownCharacters];
// NSData --> UIImage
UIImage *image = [UIImage
imageWithData:data];
return image;
}