Ios Best Way To Display Error Message
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have ios uitextfield error message Meta Discuss the workings and policies of this site About Us
Ios Error Message Guidelines
Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with examples of good error messages us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just ios toast like you, helping each other. Join them; it only takes a minute: Sign up how to show textfield validation error message in a label up vote 2 down vote favorite I am a beginner in iOS programming. I am creating a registration form, and doing client side validation on the textfield. What I want is to display
Error Message Text
the error message below the textfield in a label. I searched alot and get this so question but I am finding it difficult to understand and I think there must be a simpler way to achieve this. I am able to show the message in a label, but the problem is it doesn't hide when the focus is set to that textfield again. - (void)textFieldDidEndEditing:(UITextField *)textField { if(textField == _emailTextField) { if(![self validateEmailWithString:_emailTextField.text]) { //showing error on a label [_errorMessageLabel setText:@"please enter valid Email"]; } } else { //valid email } } - (bool)validateEmailWithString:(NSString *)emailStr { NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; return [emailTest evaluateWithObject:emailStr]; } ios objective-c uilabel share|improve this question edited Jul 3 '15 at 7:44 Bijington 1,65241636 asked Jul 3 '15 at 6:24 Kunal Kumar 449117 I think I don't understand the question. Just clear the label when the text field becomes the first responder? Examine text field delegate methods further, you have a callback when
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us uialertview Learn more about Stack Overflow the company Business Learn more about hiring developers ios human interface guidelines or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack
Uialertcontroller
Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up iPhone - What is the best way to http://stackoverflow.com/questions/31199917/how-to-show-textfield-validation-error-message-in-a-label display error message below UITextfield [closed] up vote 3 down vote favorite I have a form with many UITextfields like Name, password, email, etc.., and during validation, i want to display the error message for the fields below the respective textfield. What is the best way to do this. Any examples would really help. iphone ios share|improve this question asked Aug 29 '13 at 12:02 user694688 13611130 http://stackoverflow.com/questions/18510460/iphone-what-is-the-best-way-to-display-error-message-below-uitextfield closed as primarily opinion-based by rckoenes, Marcus Adams, Abizern, Mike Mertsock, iCodez Aug 29 '13 at 14:50 Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise.If this question can be reworded to fit the rules in the help center, please edit the question. 2 a color sticker tape would do the job... but don't write with a pencil on it after sticking because You may break your screen –Flash Thunder Aug 29 '13 at 12:05 No wonder your name is "Flash Thunder".... –user694688 Aug 29 '13 at 12:07 1 put a label under the textfield and display error there. Wrap label and textfield into a single custom control for cleaner code –Vladimir Aug 29 '13 at 12:09 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote accepted Create a new object model containing a textfield, a label and a validation block. When the textfield resigns first responder, call the block to check if it is valid and if not, display the label Something like this @protoco
Mobile Applications I love validating forms - No one ever I have loathed form validation since the first time I ever had to do it. Ten years later, things don't seem to have gotten any better. It's tedious; you have to do it twice (client and server); and it adds http://developer.telerik.com/featured/form-validation-right-mobile-applications/ a layer of complexity to your UI that really doesn't add any desirable features, other than preventing https://uxplanet.org/mobile-ux-design-user-errors-1ad1f5d664f9 people from setting their email address to "Furby". Even our users hate it. The best part is that no matter what technology you choose for your application, you can't avoid having to do validation. To make it even more fun, if you are validating a form in a mobile app, you have virtually no real estate to work with, making validation all the more painful since you error message have no place to display your errors. This got me to thinking: What are some best practices for doing validation in mobile applications? In order to find out, let's have a look at some of the validation strategies that well known applications are already using. RedBox RedBox has a simple enough login screen with two forms. What happens if you submit the form blank? Ah yes - alerts as a UI widget. Not my personal favorite, but let's press on and see some other ios best way approaches. Walmart Walmart takes the strategy of relying on you to just figure out which parts of the form are necessary before you submit it. They do this by keeping the "Continue" button disabled until you fill out enough information. Then they use a "Validation Summary" strategy where all the validation messages are appended to the top of the form and invalid fields are colored red. Validation summaries on mobile are tricky since it is impossible at first glance to see which message goes with which field. Starbucks Starbucks does it a little better. They use the separation in form fields on iOS to hold their validation messages. Smart! The only problem with this is that it pushes the form down on the device, obscuring some of it from view after validation. Instagram Instagram does, in my opinion, the best job of validating forms. They only validate one field at a time and change the color of the icon next to the field to help tie the message to the corresponding input. They also require virtually no information at all to get signed up, meaning there is less to validate. Make Validation Helpful, Not Insulting It seems like some of the time we end up with validation strategies that just scream "YOU'RE DOING IT WRONG!" at the user in various shades of red. Validation should be unobtrusive and helpful. It's meant to guide the user to success, not beat them into submission. I think that Instagram does the best job o
happen in our apps and they happen in our life. Sometimes they happen because we made mistakes. Sometimes because a system failed. Whatever the cause, these errors — and how they are handled — can have a huge impact on the way user experiences your app. Often overlooked, a lazy error handling and ill-constructed error messages can fill users with frustration, and make them stop using your app. A well-crafted error handling, on the other hand, can turn a moment of failure into a moment of delight.In this article we’ll examine how the design of apps can be optimized to prevent excessive user errors and how to create good error messages.What is Error?Errors (or error condition) occur when an app fails to complete an expected action, such as:The app does not understand user inputThe app failsA user intends to run incompatible operations concurrentlyEvery error, regardless of who is to blame, becomes a point of friction for your users. Luckily, a well-designed error handling can help reduce that friction.Preventing User ErrorsIf you design app, you should be familiar with constraints. For example, it’s hard to fill out a certain form or it’s impossible to properly sync a data if device has poor network connection. You should take these constraints into account in order to minimize errors by designing app that make it easy for users to use it. In other words, it’s better to prevent users from making errors in the first place by offering suggestions, utilizing constraints, and being flexible.Twitter famously has a strict character limit for Tweets, and warns users before they exceed that limit with a remaining character count.Make Error Message Informative and ConsistentOne of the 10 Usability Heuristics advises that it’s important to communicate errors to users gracefully and clearly. An effective error message provides following information:Clearly communicate what is happeningDescribe how a user can resolve itPreserve as much user-entered input as possibleUser Input ErrorsUser input validations are meant to have conversations with users and guide them through the difficult times of errors and uncertainty. The output of this process is emotional rather than technical.The primary principle of input validation is this: “Talk to the users! Tell when them what is wrong!” Generally speaking, there are three important elements that good form validation consists of:Right time and place for informing about errorsRight color for the messageClear language for y