iphone - nscanner 从字符串中获取值

Question

我如何从这个字符串中获取pickey的值。这个字符串存储在coredata中，我需要提取pickey的值。我如何使用nscanner来做到这一点。我应该使用哪种方法？

@"http://myserverIP/showpicture.php?email=mymail@yahoo.com&key=442205212&hash=63b201cacb5c07f6adbc8f3dcb408099d3450548&pickey=21342342342342341231"

Answer 1

NSScanner *scanner = [NSScanner scannerWithString:myString];
[scanner scanUpToString:@"pickey=" intoString:NULL];
if ([scanner scanString:@"pickey=" intoString:NULL]) {
    long long pickeyValue = 0;
    if ([scanner scanLongLong:&pickeyValue]) {
        // Successfully found an integer value at this position
        ...
    }
}