OS中一共有3种方式进行正则表达式的匹配NSPredicate、NSRegularExpression、NSString

　　一、使用NSPredicate

void useNSPredicate(){    NSString *phoneNO = @"13182428488";    NSString *regex = @"^1[3|4|5|7|8]\\d{9}$";        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];    BOOL isValid = [predicate evaluateWithObject:phoneNO];    NSLog(@"%s %d", __FUNCTION__ ,isValid);}

　　二、使用原生NSRegularExpression

void useNSRegularExpression(){    NSString *phoneNO = @"13182428488";    NSError *error = NULL;    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"^1[3|4|5|7|8]\\d{9}$" options:NSRegularExpressionCaseInsensitive error:&error];    NSTextCheckingResult *result = [regex firstMatchInString:phoneNO options:0 range:NSMakeRange(0, [phoneNO length])];    if (result) {        NSRange resultRange = [result rangeAtIndex:0];        //从urlString中截取数据        NSString *stringResult = [phoneNO substringWithRange:resultRange];                NSLog(@"%s %@\n", __FUNCTION__, stringResult);    }}

　　三、使用NSString

void useNSString(){    NSString *phoneNO = @"13182428488";    NSRange range = [phoneNO rangeOfString:@"^1[3|4|5|7|8]\\d{9}$" options:NSRegularExpressionSearch];    if (range.location != NSNotFound) {        NSLog(@"%s %@\n", __FUNCTION__, [phoneNO substringWithRange:range]);    }}