Add UIView.addBottomSeparator extension 🚀 (#1234)

SsangG77 · web-flow · commit c4565bffc455 · 2025-04-19T11:57:31.000+03:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,8 @@ The changelog for **SwifterSwift**. Also see the [releases](https://github.com/S
 
 ## Upcoming Release
 ### Added
+- **UIView**
+  - Added `addBottomSeparator(color:height:spacing:)` method to easily insert a bottom line to a view. 🚀 [#1234](https://github.com/SwifterSwift/SwifterSwift/pull/1234) by [sangjin](https://github.com/SsangG77)
 - **Android**
   - Added Android platform support. [#1230](https://github.com/SwifterSwift/SwifterSwift/pull/1230) by [Marc Prud'hommeaux](https://github.com/marcprux)
 
diff --git a/Sources/SwifterSwift/UIKit/UIViewExtensions.swift b/Sources/SwifterSwift/UIKit/UIViewExtensions.swift
@@ -700,6 +700,29 @@ public extension UIView {
         }
         return views
     }
+    
+    /// SwifterSwift: Adds a horizontal separator to the bottom of the view.
+    ///
+    ///     let view = UIView()
+    ///     view.addBottomSeparator(color: .lightGray, height: 1, spacing: 8)
+    ///
+    /// - Parameters:
+    ///   - color: The separator color. Default is `.black`.
+    ///   - height: The height of the separator. Default is `1`.
+    ///   - spacing: Spacing from the bottom edge. Default is `0`.
+    func addBottomSeparator(color: UIColor = .black, height: CGFloat = 1, spacing: CGFloat = 0) {
+        let line = UIView()
+        line.translatesAutoresizingMaskIntoConstraints = false
+        line.backgroundColor = color
+        line.layer.cornerRadius = height / 2
+        self.addSubview(line)
+        NSLayoutConstraint.activate([
+            line.heightAnchor.constraint(equalToConstant: height),
+            line.leadingAnchor.constraint(equalTo: leadingAnchor),
+            line.trailingAnchor.constraint(equalTo: trailingAnchor),
+            line.bottomAnchor.constraint(equalTo: bottomAnchor, constant: spacing)
+        ])
+    }
 }
 
 // MARK: - Constraints
diff --git a/Tests/UIKitTests/UIViewExtensionsTests.swift b/Tests/UIKitTests/UIViewExtensionsTests.swift
@@ -683,6 +683,20 @@ final class UIViewExtensionsTests: XCTestCase { // swiftlint:disable:this type_b
         view.removeBlur()
         XCTAssertFalse(view.subviews.first is UIVisualEffectView)
     }
+    
+    func testAddBottomSeparator() throws {
+        let view = UIView()
+        let expectedColor = UIColor.red
+        let expectedHeight: CGFloat = 2.0
+
+        view.addBottomSeparator(color: expectedColor, height: expectedHeight)
+
+        let separator = try XCTUnwrap(view.subviews.first, "Separator not found")
+
+        XCTAssertEqual(view.subviews.count, 1)
+        XCTAssertEqual(separator.backgroundColor, expectedColor)
+        XCTAssertEqual(separator.frame.height, expectedHeight)
+    }
 }
 
 #endif
