CGImage载入的图片，查看bitmap详细信息的一段好用代码

在IOS中，载入一张图片到CGImage后，如果想查看图片的信息，这里有一段比较好的代码可以帮助你，其他的信息要显示可以参考苹果的API自己设置！

===== a.png =====CGImageGetHeight: 5CGImageGetWidth:  3CGImageGetColorSpace: <CGColorSpace 0x4d08ff0> (kCGColorSpaceDeviceRGB)CGImageGetBitsPerPixel:     32CGImageGetBitsPerComponent: 8CGImageGetBytesPerRow:      20CGImageGetBitmapInfo: 0x00000003  kCGBitmapAlphaInfoMask     = YES  kCGBitmapFloatComponents   = NO  kCGBitmapByteOrderMask     = NO  kCGBitmapByteOrderDefault  = NO  kCGBitmapByteOrder16Little = NO  kCGBitmapByteOrder32Little = NO  kCGBitmapByteOrder16Big    = NO  kCGBitmapByteOrder32Big    = NOPixel Data:(00,00,00,FF), (FF,FF,FF,FF), (FF,00,00,FF), (00,FF,00,FF), (00,00,FF,FF)(00,00,00,FF), (FF,FF,FF,FF), (FF,00,00,FF), (00,FF,00,FF), (00,00,FF,FF)(FF,FF,FF,00), (FF,FF,FF,00), (FF,FF,FF,00), (FF,FF,FF,00), (FF,FF,FF,00)===== b.png =====CGImageGetHeight: 5CGImageGetWidth:  3CGImageGetColorSpace: <CGColorSpace 0x4d08ff0> (kCGColorSpaceDeviceRGB)CGImageGetBitsPerPixel:     24CGImageGetBitsPerComponent: 8CGImageGetBytesPerRow:      15CGImageGetBitmapInfo: 0x00000000  kCGBitmapAlphaInfoMask     = NO  kCGBitmapFloatComponents   = NO  kCGBitmapByteOrderMask     = NO  kCGBitmapByteOrderDefault  = NO  kCGBitmapByteOrder16Little = NO  kCGBitmapByteOrder32Little = NO  kCGBitmapByteOrder16Big    = NO  kCGBitmapByteOrder32Big    = NOPixel Data:(00,00,00), (FF,FF,FF), (FF,00,00), (00,FF,00), (00,00,FF)(00,00,00), (FF,FF,FF), (FF,00,00), (00,FF,00), (00,00,FF)(00,00,00), (FF,FF,FF), (FF,00,00), (00,FF,00), (00,00,FF)