4位十六进制NSString到二进制

Question

我有一个4位数的Hex NSString,类似于"00C0"或"01C3".我希望能够将其转换为二进制以查看切换的位.我的搜索返回太多无关的结果,请帮助.

Answer 1

NSScanner应该做的伎俩:

NSString *string1 = @"00C0";
NSScanner *scanner = [NSScanner scannerWithString:string1];
unsigned int number = 0;
if ([scanner scanHexInt:&number]) {
    NSLog(@"number is %u", number); // number is 192
}