Question

I am getting image data in form of char * (stored on sql server). I want to convert those data to NSData to display image in UIImage view. char * data is a bytearray for source image. how can i convert char * to NSData to display to get an UIImage instance for displaying in UIImageView?

感谢。

Answer 1

鉴于:

unsigned char *myImageData;
NSUInteger myImageDataLength;

在myImageData 是JPEG、PNG或其他一些UIImage支持格式的图像时,使用:

-(UIImage*)myImage {
    return [UIImage imageWithData:[NSData dataWithBytes:myImageData length:myImageDataLength]];
}

如果你的果园数据为基准64,请登录。 http://www.cocoadev.com/index.pl?BaseSixtyFour。

我用网络服务的数据和图像来做这项工作。例如:

// Note hex = ".PNG..", the start of the PNG header.
static unsigned char myImageData[] = { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a,... };

长度是图像档案尺寸,从图像档案中可以生成下列面值:

hexdump -e   16/1 "0x%02x, " "
"  MyImage.png

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