[iOS 取出字串中的數字]

//取出字串中的數字

第一種: 字串: urlString NSScanner *scanner = [NSScanner scannerWithString:urlString]; [scanner scanUpToCharactersFromSet:[NSCharacterSet decimalDigitCharacterSet] intoString:nil]; int number; [scanner scanInt:&number]; NSString *num=[NSString stringWithFormat:@"%d",number];

第二種: 字串: urlString

NSCharacterSet* nonDigits =[[NSCharacterSet decimalDigitCharacterSet] invertedSet];
int remainSecond =[[urlString stringByTrimmingCharactersInSet:nonDigits] intValue];
NSLog(@" num %d ",remainSecond);
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