Transform UIImage into Array Byte

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Transform UIImage into Array Byte

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#1 by (1 votes)

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I need to transform an image into an array of bytes, how do I make this image into an Array Bytes?

ios objective-c xcode

asked by anonymous 23.10.2014 / 15:29

1 answer

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score 1 · Accepted Answer

You can use the functions UIImageJPEGRepresentation or UIImagePNGRepresentation to cover your image in NSData . From there you can allocate an array of bytes of the data size, and copy the bytes to it, as in the example below.

UIImage *image = [UImage imageNamed:@"foto.png"];
NSData *data = UIImagePNGRepresentation(image);
NSUInteger len = [data length];
Byte *bytes = (Byte*)malloc(len);
memcpy(bytes, [data bytes], len);