UIimage to char* conversion

问题

I am trying to convert uiimage to char array to use with libtiff.

Thanks

回答1:

Here is the easiest way that I know of to get the bytes of a UIImage:

UIImage *someImage = ...;
CFDataRef pixelData = CGDataProviderCopyData(CGImageGetDataProvider(someImage.CGImage));
const UInt8 *data = CFDataGetBytePtr(pixelData);

Data then is an array of bytes.

EDIT:

Here is how you get an char array:

const unsigned char * buffer =  CFDataGetBytePtr(pixelData);

EDIT 2:

Try casting it to char:

char * buffer = (char *)CFDataGetBytePtr(pixelData);

来源：https://stackoverflow.com/questions/9217224/uiimage-to-char-conversion