textfield只能输入数字，（登录、注册电话号码的格式判断）等正则表达

来源：互联网发布：windows的最新版本编辑：程序博客网时间：2024/06/11 04:09

1.自定义一个类ValidateUtil ----->>>ValidateUtil .h 文件
/**
限制手机号输入格式
*/
+ (BOOL)isMatchPhoneNumberFormat:(UITextField *)textField range:(NSRange)range string:(NSString *)string;

/**
验证邮箱格式
*/
+ (BOOL)validateEmail:(NSString *)email;
/**
验证身份证号格式
*/
+ (BOOL)validateIdentityCard: (NSString *)identityCard;
/**
验证银行卡格式
*/
+ (BOOL)validateBankCardNumber:(NSString *)cardNumber;

2.----->>>ValidateUtil .m 文件
+(BOOL)isMatchPhoneNumberFormat:(UITextField *)textField range:(NSRange)range string:(NSString *)string{
  if ([stringisEqualToString:@"\n"]||[stringisEqualToString:@""]) {//按下return
  returnYES;
}
  if(![selfvalidateByRegex:@"[0-9]+"withObject:string]){
  returnNO;
}
  if (textField.text.length >=11) {
  returnNO;
}
  return YES;
}

//邮箱校验

+ (BOOL)validateEmail:(NSString *)email{ NSString *emailRegex =@"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@", emailRegex]; return [emailTestevaluateWithObject:email];

}

//身份证校验

+ (BOOL)validateIdentityCard: (NSString *)identityCard{ BOOL flag; if (identityCard.length <=0) { flag =NO; return flag; } NSString *regex2 =@"^(\\d{14}|\\d{17})(\\d|[xX])$"; NSPredicate *identityCardPredicate = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",regex2]; return [identityCardPredicateevaluateWithObject:identityCard];}

//银行卡校验

+(BOOL)validateBankCardNumber:(NSString *)cardNumber{ if(![selfvalidateByRegex:@"^[0-9]*$"withObject:cardNumber]){ returnNO; } returnYES;}

3. 在使用的类里 textfield代理方法
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
if (textField ==phoneField) {
return [ValidateUtilisMatchPhoneNumberFormat:textFieldrange:range string:string];
}
returnYES;
}

4.判断手机号格式引入头文件----->>ValidateUtil .h 文件
if (![ValidateUtilvalidateMobile:phoneNumber]) {
NSLog(@"手机号格式错误");
return;
}

注释：银行卡，身份证，邮箱校验，和手机号校验方法相似，在对应的地方调用对应的类方法即可校验，屡试屡爽。

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