Int from NSData

Question

I have a NSData object with 4 bytes length. I know this 4 bytes construcuts a positive integer. How should I get the int from those NSdata object?

Answer 1

If you know the endianness matches the current system:

x = *(const UInt32 *)[theData bytes];

If you know the endianness is backwards, follow that with:

x = Endian32_Swap( x );

If you are not sure of the source and target endianness, you should probably find another way to pass the data.