How to Show SwiftUI Alerts with Buttons, Textfields and Error Messages
Learn how to use SwiftUI alerts. In iOS 14 and earlier, creating an alert involves using a special alert type, but in iOS 15, the process is simplified. Alerts can directly contain buttons and text fields, reducing the need for specialized alert types.
TI will show you an alert in a demo project, which includes features like buttons for submission and cancelation of a review, and text fields for writing the review. The project also mimics a situation where the user lacks internet access, illustrating an instance where an alert is helpful.
Creating an alert requires the declaration of state property, with a boolean value indicating whether the alert should be shown. Depending on the situation, the alert may contain different buttons, such as "cancel" or "delete review." If an action like "delete review" is selected, the navigation stack can be manipulated to return to a previous view. In the new version available with iOS 15, alerts can include various views, like text fields, providing greater flexibility.
Last, I will discuss handling errors with alerts. An alert can automatically pull information from predefined error types to display relevant messages to users. This simplifies the process of displaying error-specific alerts.
In summary, alerts should be sparingly used only to inform users of crucial issues or errors, and the new implementations in iOS 15 offers increased flexibility and simplicity for handling these scenarios.
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