SwiftUI: iOS Confirmation Alert (Confirm + Cancel)

Deleting data, overwriting a file, leaving a group, resetting settings — these should require an explicit “Yes, I mean it.” SwiftUI gives us this structure with the built-in .alert modifier.

Implementation

You show the alert by toggling a boolean.
SwiftUI handles the presentation lifecycle for you.

Destructive variant (when the action is dangerous)

Use role: .destructive when the user is about to lose something.

Apple’s HIG expects this.
Users instantly understand red = irreversible.

Pairing confirmation with haptics (good UX)

Good mobile apps give “feel” to the user’s confirmation. One line:

You can fire that inside your confirm callback.

Best practices for developers

• always require confirmation before deleting something
• make the title of the alert specific (“Delete photo?” not “Are you sure?”)
• avoid alerts for navigation — alerts are for commit actions