Converting NSdata to bytes & then converting the first n bytes to int

Question

I\'ve a NSData object. First I want to convert NSData object to bytes, then read the first four bytes in this NSData object and then conve

Answer 1

That's quite simple. Use bytes to get at the bytes and then cast to unsigned char*

unsigned char *n = [yourNSData bytes];
int value1 = n[0];
int value2 = n[1];
int value3 = n[2];
int value4 = n[3];

Update

To turn this into a single int assumes bytes contains a valid int:

int result = *(int *)n;