ios - 在 IOS 应用程序中验证

Question

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，但它不起作用。当我单击注册按钮时，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];



}

Answer 1

验证您的 TextFiled 的最佳方法是

创建验证方法

-(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];
}