Ios 将验证设置为文本字段时出错

使用以下代码，我试图验证电子邮件文本字段，但问题是，即使两个文本字段中的电子邮件和确认电子邮件文本相同，也会显示错误消息，表明它们不相同。我不知道我的代码有什么问题，有什么帮助吗

 - (IBAction)submit_Act:(id)sender {
 //new//
 NSString  *errorMessage;
 errorMessage = @"";
if ([usernametxt.text isEqualToString:@""]){
    errorMessage = @"Please enter Username \n";
}

if([passwordtxt.text isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Password\n"];
}

if([confirmPasswordtxt.text isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Confirm Password\n"];
}
if((passwordtxt.text == confirmPasswordtxt.text) == false){
    errorMessage = [errorMessage stringByAppendingString:@"Password and Confirm Password are not same.\n"];
}

NSString *regex = @"[^@]+@[A-Za-z0-9.-]+\\.[A-Za-z]+";
NSPredicate *emailPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES  %@", regex];

if([emailaddtxt.text isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Email Address\n"];
}
else if ([emailPredicate evaluateWithObject:emailaddtxt.text] == NO) {
    errorMessage = [errorMessage stringByAppendingString:@"Please enter valid Email Address\n"];
}

if([confirmEmailtxt.text isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Confirm Email Address\n"];
}
else if ([emailPredicate evaluateWithObject:confirmEmailtxt.text] == NO) {
    errorMessage = [errorMessage stringByAppendingString:@"Please enter valid confirm Email Address\n"];
}

if((emailaddtxt.text == confirmEmailtxt.text) == false)
{
   errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

if([citytxt.text isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter City\n"];
}

if([statetxt.text isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter State\n"];
}

if([countrytxt.text isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Country\n"];
}

if (_agree_btn.selected==false) {
    errorMessage = [errorMessage stringByAppendingString:@"Please agree Terms & Conditions\n"];
}

if (![errorMessage isEqualToString:@""]) {
    NSLog(@"not done");
    [[[UIAlertView alloc] initWithTitle:nil message:errorMessage delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Ok", nil] show];
    return;
 }
}   else{

    NSLog(@" Done Dana done");

    _activityIndicator.hidden=NO;
    [_activityIndicator startAnimating];

    protocolTest = [[ClassWithProtocol alloc] init];
    [protocolTest setDelegate:self];
    NSString *post = [NSString stringWithFormat:@"task=webapi.registerClient&username=%@&password=%@&person_name=%@&email=%@&terms_check=1&city=%@&state=%@&country=%@&user_id=%@",usernametxt.text,passwordtxt.text,contactPersonstxt.text,emailaddtxt.text,citytxt.text,statetxt.text,countrytxt.text,_fetchid];
    [protocolTest  startLogintask:post];

}  

而不是

if((emailaddtxt.text == confirmEmailtxt.text) == false)
{
   errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

像这样比较它们

if(![emailaddtxt.text isEqualToString:confirmEmailtxt.text])
{
   errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

而不是

if((emailaddtxt.text == confirmEmailtxt.text) == false)
{
   errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

像这样比较它们

if(![emailaddtxt.text isEqualToString:confirmEmailtxt.text])
{
   errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

试着这样,

if([passwordtxt text] != [confirmPasswordtxt text])
{
     errorMessage = [errorMessage stringByAppendingString:@"Password and Confirm Password are not same.\n"];
}

对于电子邮件

if([emailaddtxt text] != [confirmEmailtxt text])
{
     errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

这很好用。

像这样试试

if([passwordtxt text] != [confirmPasswordtxt text])
{
     errorMessage = [errorMessage stringByAppendingString:@"Password and Confirm Password are not same.\n"];
}

对于电子邮件

if([emailaddtxt text] != [confirmEmailtxt text])
{
     errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

这将很好地工作。

检查以下代码：

if(![emailaddtxt.text isEqual:confirmEmailtxt.text])
{
   errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

检查以下代码：

if(![emailaddtxt.text isEqual:confirmEmailtxt.text])
{
   errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
}

---

这里的问题是文本字段有@和。符号不能直接比较。我们需要先将它们转换成字符串，然后使用isEqualToString比较它们，所以这里我找到了解决问题的方法

 NSString *emailID = emailaddtxt.text;
 NSString *confemail = confirmEmailtxt.text;

 NSString *regex = @"[^@]+@[A-Za-z0-9.-]+\\.[A-Za-z]+";
 NSPredicate *emailPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES  %@", regex];

if([emailID isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Email Address\n"];
    NSLog(@"email is%@",self.emailaddtxt);
 }

if ([emailPredicate evaluateWithObject:emailID] == NO) {
  errorMessage = [errorMessage stringByAppendingString:@"Please enter valid Email Address\n"];
 }


 NSString *regex2 = @"[^@]+@[A-Za-z0-9.-]+\\.[A-Za-z]+";
 NSPredicate *confemailPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES  %@", regex2];

 if([confemail isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Confirm Email Address\n"];
    NSLog(@"email is%@",self.confirmEmailtxt.text);
 }

 if([confemailPredicate evaluateWithObject:confemail] == NO)
 {
    errorMessage = [errorMessage stringByAppendingString:@"Please enter valid confirm Email Address\n"];
 }

 if(![emailID isEqualToString:confemail])
{
  errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
  NSLog(@"email is%@& confemail is%@" ,self.emailaddtxt.text,self.confirmEmailtxt.text);
}

---

这里的问题是文本字段有@和。符号不能直接比较。我们需要先将它们转换成字符串，然后使用isEqualToString比较它们，所以这里我找到了解决问题的方法

 NSString *emailID = emailaddtxt.text;
 NSString *confemail = confirmEmailtxt.text;

 NSString *regex = @"[^@]+@[A-Za-z0-9.-]+\\.[A-Za-z]+";
 NSPredicate *emailPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES  %@", regex];

if([emailID isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Email Address\n"];
    NSLog(@"email is%@",self.emailaddtxt);
 }

if ([emailPredicate evaluateWithObject:emailID] == NO) {
  errorMessage = [errorMessage stringByAppendingString:@"Please enter valid Email Address\n"];
 }


 NSString *regex2 = @"[^@]+@[A-Za-z0-9.-]+\\.[A-Za-z]+";
 NSPredicate *confemailPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES  %@", regex2];

 if([confemail isEqualToString:@""]){
    errorMessage = [errorMessage stringByAppendingString:@"Please enter Confirm Email Address\n"];
    NSLog(@"email is%@",self.confirmEmailtxt.text);
 }

 if([confemailPredicate evaluateWithObject:confemail] == NO)
 {
    errorMessage = [errorMessage stringByAppendingString:@"Please enter valid confirm Email Address\n"];
 }

 if(![emailID isEqualToString:confemail])
{
  errorMessage = [errorMessage stringByAppendingString:@"Email and Confirm Email are not same.\n"];
  NSLog(@"email is%@& confemail is%@" ,self.emailaddtxt.text,self.confirmEmailtxt.text);
}

---

---

---

不要像“if（（emailaddtxt.text==confirmEmailtxt.text==false）”这样比较字符串，“if（[emailaddtxt.text isEqualToString:：confirmEmailtxt.text]）”这样比较字符串。有没有帮助人员仍然有相同的问题？有人知道我在这里面临的问题吗？@vicky你检查了这两个（密码和确认密码）吗在控制台中打印值？可能存在任何引用问题…@Bharath是的，我已通过在控制台中打印进行检查，并且值是正确的。但是，即使电子邮件和确认电子邮件是相同的，这也给了我一个错误，即它们不相同，但密码和确认密码工作正常。不要比较字符串，比如“if（（emailaddtxt.text==confirmeailtxt.text）==false）”比较字符串，比如“if（[emailaddtxt.text IsequalString:：confirmeailtxt.text]）任何帮助人员，仍然存在相同的问题？有人知道我在这里面临的问题吗？@vicky您是否通过在控制台中打印来检查这两个（密码和确认密码）值？可能存在任何引用问题…@Bharath是的，我已通过在控制台中打印进行检查，并且值是正确的。但是，即使电子邮件和确认电子邮件是相同的，这给了我一个错误，它们不一样，但密码和确认密码工作正常。如果电子邮件和确认邮件是相同的，它仍然会显示messagePrajapathi您的更新答案与Kirti Mali给出的答案完全相同，见下文，她给出的答案。哦，对不起！但第一次我忘了写“！”了。但问题是，密码和确认密码工作正常，但如果电子邮件和确认电子邮件是相同的，它仍然会显示它们不相同的消息。是因为我们正在用正则表达式检查它吗？大写和小写字符串的issuecheck在哪里？如果电子邮件和确认邮件相同，它仍然会显示messagePrajapathi您的更新答案与Kirti Mali给出的答案完全相同，请参见下面，她给出的答案。哦，对不起！但第一次我忘了写“！”了。但问题是，密码和确认密码工作正常，但如果电子邮件和确认电子邮件是相同的，它仍然会显示它们不相同的消息。是因为我们正在用正则表达式检查它吗？大写和小写字符串的issuecheck可能在哪里？不，如果电子邮件和确认电子邮件都相同，它将不起作用，这会导致错误，电子邮件和确认电子邮件不相同。如果您尝试使用

isEqualToString

？我做了，这里的问题是文本字段有@和。符号不能直接比较。我们需要先将它们转换成字符串，然后使用isEqualToString比较它们，看看解决方案。是的，这是正确的…我尝试了我的答案中给出的方法，它在我的最后也起了作用。顺便说一句，你终于得到了它，真是太好了。：）感谢您的支持：）不，如果电子邮件和确认电子邮件都是相同的，那么它就不起作用了。如果您尝试使用

isEqualToString

，那么电子邮件和确认电子邮件就不一样了。这是我做的，问题是文本字段中有@和。符号不能直接比较。我们需要先将它们转换成字符串，然后使用isEqualToString比较它们，看看解决方案。是的，这是正确的…我尝试了我的答案中给出的方法，它在我的最后也起了作用。顺便说一句，你终于得到了它，真是太好了。：）感谢您的支持：）它给了我相同的错误电子邮件和电子邮件是不一样的，即使他们是same@vicky如果（（emailaddtxt.text==confirmemailtx.text）==false）请确保不要忘记“！”如果我添加了我自己创建的条件，这里的问题是文本字段有@和。符号不能直接比较。我们需要先将它们转换为字符串，然后使用isEqualToString比较它们，看看解决方案。这给了我相同的错误电子邮件和confEmail，即使它们是相同的same@vicky如果（（emailaddtxt.text==confirmEmailtxt.text）==false）请确保不要忘记“！”我的代码将替换为您的此行代码如果我添加了我自己做的，这里的问题是文本字段有@和。符号不能直接比较。我们需要先在字符串中转换它们，然后使用isEqualToString比较它们，看看解决方案。