objective-c 下面int 和 NSData数据 互相转换的方法
抄自这里
int i = 1; NSData *data = [NSData dataWithBytes: &i length: sizeof(i)]; int i; [data getBytes: &i length: sizeof(i)];
抄自这里
int i = 1; NSData *data = [NSData dataWithBytes: &i length: sizeof(i)]; int i; [data getBytes: &i length: sizeof(i)];