IOS应用程序中的验证

我知道这是一个简单的问题，但我已经尝试了很多次代码检查验证，但都不起作用。当我点击注册按钮时，它会将我带到下一页，而不是验证我的表单。我的代码是

- (IBAction)Register:(id)sender {
    if ([self.name.text isEqualToString:@""]){
        NSString *message = @"Name";

        UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Enter Your Name"
                                                                       message:message
                                                                preferredStyle:UIAlertControllerStyleAlert];

        [self presentViewController:alert animated:YES completion:nil];

        int duration = 1; // duration in seconds

        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
            [alert dismissViewControllerAnimated:YES completion:nil];
        });

    } else if ([self.email.text isEqualToString:@""]){
        NSString *message = @"Email";

        UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Enter Your Email Address"
                                                                       message:message
                                                                preferredStyle:UIAlertControllerStyleAlert];

        [self presentViewController:alert animated:YES completion:nil];

        int duration = 1; // duration in seconds

        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
            [alert dismissViewControllerAnimated:YES completion:nil];
        });

    }else{

        NSString *emailRegEx = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
        NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegEx];
        //Valid email address

        if ([emailTest evaluateWithObject:_email.text] == YES)
        {
            // NSLog(@"Correct Email");
        }
        else
        {
            NSString *message = @"Invalid Email";

            UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Email Format Incorrect"
                                                                           message:message
                                                                    preferredStyle:UIAlertControllerStyleAlert];

            [self presentViewController:alert animated:YES completion:nil];

            int duration = 1; // duration in seconds

            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [alert dismissViewControllerAnimated:YES completion:nil];
            });

        }

        if ([_code.titleLabel.text isEqualToString:@"Code"]) {
            NSString *message = @"Select Country Code";

            UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                           message:message
                                                                    preferredStyle:UIAlertControllerStyleAlert];

            [self presentViewController:alert animated:YES completion:nil];

            int duration = 1; // duration in seconds

            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [alert dismissViewControllerAnimated:YES completion:nil];
            });

        }


        if ([self.mobileCode.text isEqualToString:@""]) {
            NSString *message = @"Enter Mobile Code";

            UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                           message:message
                                                                    preferredStyle:UIAlertControllerStyleAlert];

            [self presentViewController:alert animated:YES completion:nil];

            int duration = 1; // duration in seconds

            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [alert dismissViewControllerAnimated:YES completion:nil];
            });

        }

        if ([self.number1.text isEqualToString:@""]) {
            NSString *message = @"Enter Your Number";

            UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                           message:message
                                                                    preferredStyle:UIAlertControllerStyleAlert];

            [self presentViewController:alert animated:YES completion:nil];

            int duration = 1; // duration in seconds

            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [alert dismissViewControllerAnimated:YES completion:nil];
            });

        }





    }
    [self Account];



}

---

似乎您正在调用API，即使所有验证都已通过或失败。我把小逻辑放在何时调用API上。请检查我的下面，让我知道如果你有任何疑问

   - (IBAction)Register:(id)sender {

        BOOL isValidationSuccess = TRUE;
        if ([self.name.text isEqualToString:@""]){

            // You need to change the flage when you get error in your code
            isValidationSuccess = FALSE;
            NSString *message = @"Name";

            UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Enter Your Name"
                                                                           message:message
                                                                    preferredStyle:UIAlertControllerStyleAlert];

            [self presentViewController:alert animated:YES completion:nil];

            int duration = 1; // duration in seconds

            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [alert dismissViewControllerAnimated:YES completion:nil];
            });

        } else if ([self.email.text isEqualToString:@""]){

            // You need to change the flage when you get error in your code
            isValidationSuccess = FALSE;

            NSString *message = @"Email";

            UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Enter Your Email Address"
                                                                           message:message
                                                                    preferredStyle:UIAlertControllerStyleAlert];

            [self presentViewController:alert animated:YES completion:nil];

            int duration = 1; // duration in seconds

            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [alert dismissViewControllerAnimated:YES completion:nil];
            });

        }else{

            NSString *emailRegEx = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
            NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegEx];
            //Valid email address

            if ([emailTest evaluateWithObject:_email.text] == YES)
            {
                // NSLog(@"Correct Email");
            }
            else
            {
                // You need to change the flage when you get error in your code
                isValidationSuccess = FALSE;


                NSString *message = @"Invalid Email";

                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Email Format Incorrect"
                                                                               message:message
                                                                        preferredStyle:UIAlertControllerStyleAlert];

                [self presentViewController:alert animated:YES completion:nil];

                int duration = 1; // duration in seconds

                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                    [alert dismissViewControllerAnimated:YES completion:nil];
                });

            }

            if ([_code.titleLabel.text isEqualToString:@"Code"]) {

                // You need to change the flage when you get error in your code
                isValidationSuccess = FALSE;


                NSString *message = @"Select Country Code";

                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                               message:message
                                                                        preferredStyle:UIAlertControllerStyleAlert];

                [self presentViewController:alert animated:YES completion:nil];

                int duration = 1; // duration in seconds

                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                    [alert dismissViewControllerAnimated:YES completion:nil];
                });

            }


            if ([self.mobileCode.text isEqualToString:@""]) {

                // You need to change the flage when you get error in your code
                isValidationSuccess = FALSE;


                NSString *message = @"Enter Mobile Code";

                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                               message:message
                                                                        preferredStyle:UIAlertControllerStyleAlert];

                [self presentViewController:alert animated:YES completion:nil];

                int duration = 1; // duration in seconds

                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                    [alert dismissViewControllerAnimated:YES completion:nil];
                });

            }

            if ([self.number1.text isEqualToString:@""]) {

                // You need to change the flage when you get error in your code
                isValidationSuccess = FALSE;


                NSString *message = @"Enter Your Number";

                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                               message:message
                                                                        preferredStyle:UIAlertControllerStyleAlert];

                [self presentViewController:alert animated:YES completion:nil];

                int duration = 1; // duration in seconds

                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                    [alert dismissViewControllerAnimated:YES completion:nil];
                });

            }





        }


        // This comes TRUE means you have pass your all validation.
        if(isValidationSuccess)
        {
            /// You can call for register
            [self account];
        }


    }

---

似乎您正在调用API，即使所有验证都已通过或失败。我把小逻辑放在何时调用API上。请检查我的下面，让我知道如果你有任何疑问

   - (IBAction)Register:(id)sender {

        BOOL isValidationSuccess = TRUE;
        if ([self.name.text isEqualToString:@""]){

            // You need to change the flage when you get error in your code
            isValidationSuccess = FALSE;
            NSString *message = @"Name";

            UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Enter Your Name"
                                                                           message:message
                                                                    preferredStyle:UIAlertControllerStyleAlert];

            [self presentViewController:alert animated:YES completion:nil];

            int duration = 1; // duration in seconds

            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [alert dismissViewControllerAnimated:YES completion:nil];
            });

        } else if ([self.email.text isEqualToString:@""]){

            // You need to change the flage when you get error in your code
            isValidationSuccess = FALSE;

            NSString *message = @"Email";

            UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Enter Your Email Address"
                                                                           message:message
                                                                    preferredStyle:UIAlertControllerStyleAlert];

            [self presentViewController:alert animated:YES completion:nil];

            int duration = 1; // duration in seconds

            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [alert dismissViewControllerAnimated:YES completion:nil];
            });

        }else{

            NSString *emailRegEx = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
            NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegEx];
            //Valid email address

            if ([emailTest evaluateWithObject:_email.text] == YES)
            {
                // NSLog(@"Correct Email");
            }
            else
            {
                // You need to change the flage when you get error in your code
                isValidationSuccess = FALSE;


                NSString *message = @"Invalid Email";

                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Email Format Incorrect"
                                                                               message:message
                                                                        preferredStyle:UIAlertControllerStyleAlert];

                [self presentViewController:alert animated:YES completion:nil];

                int duration = 1; // duration in seconds

                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                    [alert dismissViewControllerAnimated:YES completion:nil];
                });

            }

            if ([_code.titleLabel.text isEqualToString:@"Code"]) {

                // You need to change the flage when you get error in your code
                isValidationSuccess = FALSE;


                NSString *message = @"Select Country Code";

                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                               message:message
                                                                        preferredStyle:UIAlertControllerStyleAlert];

                [self presentViewController:alert animated:YES completion:nil];

                int duration = 1; // duration in seconds

                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                    [alert dismissViewControllerAnimated:YES completion:nil];
                });

            }


            if ([self.mobileCode.text isEqualToString:@""]) {

                // You need to change the flage when you get error in your code
                isValidationSuccess = FALSE;


                NSString *message = @"Enter Mobile Code";

                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                               message:message
                                                                        preferredStyle:UIAlertControllerStyleAlert];

                [self presentViewController:alert animated:YES completion:nil];

                int duration = 1; // duration in seconds

                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                    [alert dismissViewControllerAnimated:YES completion:nil];
                });

            }

            if ([self.number1.text isEqualToString:@""]) {

                // You need to change the flage when you get error in your code
                isValidationSuccess = FALSE;


                NSString *message = @"Enter Your Number";

                UIAlertController *alert = [UIAlertController alertControllerWithTitle:@""
                                                                               message:message
                                                                        preferredStyle:UIAlertControllerStyleAlert];

                [self presentViewController:alert animated:YES completion:nil];

                int duration = 1; // duration in seconds

                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                    [alert dismissViewControllerAnimated:YES completion:nil];
                });

            }





        }


        // This comes TRUE means you have pass your all validation.
        if(isValidationSuccess)
        {
            /// You can call for register
            [self account];
        }


    }

---

验证

textfield

的最佳方法是

创建一个验证方法

-(BOOL)validation
{

  if (self.name.text.length==0){
// Show alert enter Name
return NO;

}

if ([self.email.text.length==0){
// Show alert enter Email
return NO;

}

if ([_code.titleLabel.text.length==0){
// Show alert Select Country
return NO;

}

// Similarly Create method to validate your email
if (![self validateEmailString:self.email.text]){
// Show alert invalid email
return NO;

}

// and so on check your validation 

//Finally retrun YES , validation Over
return YES;
}

使用

if ([self validation])
{
  // validation over than call your API
[self Account];
}

---

验证

textfield

的最佳方法是

创建一个验证方法

-(BOOL)validation
{

  if (self.name.text.length==0){
// Show alert enter Name
return NO;

}

if ([self.email.text.length==0){
// Show alert enter Email
return NO;

}

if ([_code.titleLabel.text.length==0){
// Show alert Select Country
return NO;

}

// Similarly Create method to validate your email
if (![self validateEmailString:self.email.text]){
// Show alert invalid email
return NO;

}

// and so on check your validation 

//Finally retrun YES , validation Over
return YES;
}

使用

if ([self validation])
{
  // validation over than call your API
[self Account];
}

---

1.你在情节提要中指定了哔叽吗？2.我没有在您的函数中看到任何调试

NSLog

。3.输入字段中的值是什么？您被带到下一页可能是因为

[self-Account]

。

Account

方法是否用于显示下一个屏幕？无论发生什么验证，您的代码都会调用

[self-Account]

。为什么你会在1秒后自动关闭任何警报？这可能是因为你直接从情节提要中提供导航。在故事板中检查一次。[自我帐户]在此我的API中正在运行并注册来自用户的数据@TejasK1。你在情节提要中指定了哔叽吗？2.我没有在您的函数中看到任何调试

NSLog

。3.输入字段中的值是什么？您被带到下一页可能是因为

[self-Account]

。

Account

方法是否用于显示下一个屏幕？无论发生什么验证，您的代码都会调用

[self-Account]

。为什么你会在1秒后自动关闭任何警报？这可能是因为你直接从情节提要中提供导航。在故事板中检查一次。[自我帐户]在此我的API中正在运行并注册来自用户的数据@泰哈斯克汉克斯很多@非常感谢@谢天谢地，我得到了答案@谢谢，我得到了答案@迪鲁