Question

使用以下代码我正在尝试验证电子邮件textFields，但问题是，即使文本字段中的电子邮件和确认电子邮件文本相同，它也会显示错误消息，表明它们不相同。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];

}

Answer 1

而不是

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

将它们比作

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

Answer 2

试试这个，

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

发送电子邮件，

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

这样做会很好。

Answer 3

检查以下代码：

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

Answer 4

这里的问题是textFields有@和。标志无法直接比较。我们需要首先在字符串中转换它们并使用isEqualToString进行比较，所以这里是我在问题上找到的解决方案。

 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);
}

将验证设置为textFields时出错

4 个答案: