ios开发笔记--判断输入的手机号和价格是否合法

/ 手机号码的有效性判断
//检测是否是手机号码
- (BOOL)isMobileNumber:(NSString *)mobileNum
{
    /**
     * 手机号码
     * 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188
     * 联通：130,131,132,152,155,156,185,186
     * 电信：133,1349,153,180,189
     */
    NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";
    /**
     10         * 中国移动：China Mobile
     11         * 134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188
     12         */
    NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";
    /**
     15         * 中国联通：China Unicom
     16         * 130,131,132,152,155,156,185,186
     17         */
    NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$";
    /**
     20         * 中国电信：China Telecom
     21         * 133,1349,153,180,189
     22         */
    NSString * CT = @"^1((33|53|8[09])[0-9]|349)\\d{7}$";
    /**
     25         * 大陆地区固话及小灵通
     26         * 区号：010,020,021,022,023,024,025,027,028,029
     27         * 号码：七位或八位
     28         */
    // NSString * PHS = @"^0(10|2[0-5789]|\\d{3})\\d{7,8}$";

    NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
    NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];
    NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];
    NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];

    if (([regextestmobile evaluateWithObject:mobileNum] == YES)
        || ([regextestcm evaluateWithObject:mobileNum] == YES)
        || ([regextestct evaluateWithObject:mobileNum] == YES)
        || ([regextestcu evaluateWithObject:mobileNum] == YES))
        {
        return YES;
        }
    else
        {
        return NO;
        }
}

 特殊字符的限制输入，价格金额的有效性判断

#define myDotNumbers     @"0123456789.\n"
#define myNumbers          @"0123456789\n"
-(void) createTextFiled {
    textfield1_ = [[UITextField alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
    textfield1_.delegate = self;
    [self addSubview:textfield1_];

     textfield2_ = [[UITextField alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
    textfield2_.delegate = self;
    [self addSubview:textfield2_];

     textfield3_ = [[UITextField alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
    textfield3_.delegate = self;
    [self addSubview:textfield3_];

}

-(void)showMyMessage:(NSString*)aInfo {

    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"提示" message:aInfo delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
    [alertView show];
    [alertView release];

}

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    NSCharacterSet *cs;
    if ([textField isEqual:textfield1_]) {
        cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];
        NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
        BOOL basicTest = [string isEqualToString:filtered];
        if (!basicTest) {
            [self showMyMessage:@"只能输入数字"];
            return NO;
        }
    }
    else if ([textField isEqual:textfield2_]) {
        cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];
        NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
        BOOL basicTest = [string isEqualToString:filtered];
        if (!basicTest) {
            [self showMyMessage:@"只能输入数字"];
            return NO;
        }
    }
    else if ([textField isEqual:textfield3_]) {
        NSUInteger nDotLoc = [textField.text rangeOfString:@"."].location;
        if (NSNotFound == nDotLoc && 0 != range.location) {
            cs = [[NSCharacterSet characterSetWithCharactersInString:myDotNumbers] invertedSet];
        }
        else {
            cs = [[NSCharacterSet characterSetWithCharactersInString:myNumbers] invertedSet];
        }
        NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
        BOOL basicTest = [string isEqualToString:filtered];
        if (!basicTest) {

            [self showMyMessage:@"只能输入数字和小数点"];
            return NO;
        }
        if (NSNotFound != nDotLoc && range.location > nDotLoc + 3) {
            [self showMyMessage:@"小数点后最多三位"];
            return NO;
        }
    }
    return YES;
}