uikit-max

Review Swift and UIKit code for correctness, modern API usage, and adherence to project conventions. Report only genuine problems — do not nitpick or invent issues.

Review process:

Check for deprecated API using
```
references/api.md
```
.
Check that views, subclassing, and composition patterns follow best practices using
```
references/views.md
```
.
Validate Auto Layout usage and constraint patterns using
```
references/layout.md
```
.
Ensure view controller lifecycle and architecture are correct using
```
references/controllers.md
```
.
Ensure navigation patterns are modern and maintainable using
```
references/navigation.md
```
.
Validate UITableView and UICollectionView usage using
```
references/tableview-collectionview.md
```
.
Ensure the code uses designs that are accessible and compliant with Apple's Human Interface Guidelines using
```
references/design.md
```
.
Validate accessibility compliance including Dynamic Type, VoiceOver, and traits using
```
references/accessibility.md
```
.
Ensure the code runs efficiently using
```
references/performance.md
```
.
Check concurrency and thread safety using
```
references/concurrency.md
```
.
Quick validation of Swift code using
```
references/swift.md
```
.
Final code hygiene check using
```
references/hygiene.md
```
.

If doing a partial review, load only the relevant reference files.

Core Instructions

iOS 26 exists and is the latest iOS version. Target iOS 17 or later as the minimum deployment target for new code, unless the project specifies otherwise.
Target Swift 6.2 or later, using modern Swift concurrency.
Respect the project's deployment target. Before suggesting a modern API, check its availability. If the project targets an older iOS version, recommend the best available alternative and wrap newer APIs in
```
if #available
```
checks. Reference files mark key APIs with their iOS version (e.g., "iOS 15+"). Do not suggest APIs unavailable at the project's minimum target without providing a fallback.
As a UIKit developer, the user expects UIKit patterns. Do not suggest SwiftUI replacements unless explicitly requested.
Do not introduce third-party frameworks without asking first.
Break different types up into different Swift files rather than placing multiple classes, structs, or enums into a single file.
Use a consistent project structure, with folder layout determined by app features.
Prefer programmatic UI with Auto Layout anchors over Storyboards and XIBs for new code, unless the project already uses Interface Builder extensively.

Output Format

Organize findings by file. For each issue:

State the file and relevant line(s).
Name the rule being violated (e.g., "Use
```
UIAlertController
```
instead of
```
UIAlertView
```
").
Show a brief before/after code fix.

Skip files with no issues. End with a prioritized summary of the most impactful changes to make first.

Example output:

ProfileViewController.swift

Line 8: Use
UIAlertController
instead of deprecated
UIAlertView
.

swift

// Before
let alert = UIAlertView(title: "Error", message: msg, delegate: self, cancelButtonTitle: "OK")
alert.show()

// After
let alert = UIAlertController(title: "Error", message: msg, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default))
present(alert, animated: true)

Line 24: Batch constraint activation with
NSLayoutConstraint.activate
.

swift

// Before
label.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
label.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true

// After
NSLayoutConstraint.activate([
    label.topAnchor.constraint(equalTo: view.topAnchor),
    label.leadingAnchor.constraint(equalTo: view.leadingAnchor)
])

Line 42: Set
translatesAutoresizingMaskIntoConstraints = false
before adding constraints.

swift

// Before
view.addSubview(label)
label.topAnchor.constraint(equalTo: view.topAnchor).isActive = true

// After
label.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(label)
NSLayoutConstraint.activate([
    label.topAnchor.constraint(equalTo: view.topAnchor)
])

Summary

Deprecated API (high):
```
UIAlertView
```
on line 8 must be replaced with
```
UIAlertController
```
.
Layout (medium): Individual constraint activation on line 24 should use
```
NSLayoutConstraint.activate
```
.
Layout (medium): Missing
```
translatesAutoresizingMaskIntoConstraints
```
on line 42 causes constraint conflicts.

End of example.

References

```
references/api.md
```
— deprecated UIKit APIs and their modern replacements.
```
references/views.md
```
— UIView lifecycle, composition, subclassing, and custom drawing.
```
references/layout.md
```
— Auto Layout, layout anchors, UIStackView, intrinsic content size, Safe Area.
```
references/controllers.md
```
— UIViewController lifecycle, container controllers, avoiding Massive View Controller.
```
references/navigation.md
```
— navigation controllers, tab bars, coordinator pattern, modal presentation.
```
references/tableview-collectionview.md
```
— diffable data sources, compositional layout, cell configuration, prefetching.
```
references/design.md
```
— Human Interface Guidelines, UIAppearance, trait collections, Dark Mode, adaptive layouts.
```
references/accessibility.md
```
— VoiceOver, Dynamic Type, accessibility traits, labels, and hints.
```
references/performance.md
```
— off-screen rendering, layer optimization, image caching, main thread performance.
```
references/concurrency.md
```
— main thread safety, async/await, DispatchQueue migration, background tasks.
```
references/swift.md
```
— modern Swift code, Swift concurrency, Objective-C interop.
```
references/hygiene.md
```
— memory management, retain cycles, KVO/notification cleanup, deinit patterns.

uikit-max

NPX Install

Tags

SKILL.md Content

Core Instructions

Output Format

ProfileViewController.swift

Summary

References