The Ultimate Guide to Validation Patterns in SwiftUI

Mohammad Azam
15 min readDec 19, 2024
Photo by Patrick Tomasso on Unsplash

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Validation is a crucial component of app development, ensuring that only accurate and meaningful data is processed by your application. As the saying goes in software development, Garbage in, garbage out. If your app allows users to submit invalid data, it will inevitably result in unreliable and flawed outputs.

In this article, we will explore various techniques for implementing robust validation in your SwiftUI apps to enhance data integrity and user experience.

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Simple Validation

Validation doesn’t have to be overly complex. The primary goal is to inform users when their input is invalid and guide them to correct it. This can be achieved in various ways, such as showing error messages, highlighting fields, or enabling/disabling certain actions.

In the following example, we demonstrate a simple implementation of a login screen. Basic validation is used to ensure that both the…

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Mohammad Azam
Mohammad Azam

Written by Mohammad Azam

Lead instructor at a coding bootcamp. Top iOS mobile instructor on Udemy. Author of multiple books and international speaker. azamsharp.school

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