Version 2.8.2

- Replaced 'runsOn' with 'runs-on'.
- Supported build jobs for Xcode 15.2.
- Didn't use `macos-11` as possible which was deprecated.

.github/workflows/ci.yml

@@ -11,67 +11,80 @@ on:
 
 jobs:
   build:
-    runs-on: ${{ matrix.runsOn }}
+    runs-on: ${{ matrix.runs-on }}
     env:
       DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
     strategy:
       fail-fast: false
       matrix:
         include:
+          - swift: "5.9"
+            xcode: "15.2"
+            runs-on: macos-13
           - swift: "5.8"
-            xcode: "14.3"
-            runsOn: macos-13
+            xcode: "14.3.1"
+            runs-on: macos-13
           - swift: "5.7"
             xcode: "14.1"
-            runsOn: macos-12
+            runs-on: macos-12
           - swift: "5.6"
             xcode: "13.4.1"
-            runsOn: macos-12
+            runs-on: macos-12
           - swift: "5.5"
             xcode: "13.2.1"
-            runsOn: macos-11
+            runs-on: macos-12
           - swift: "5.4"
             xcode: "12.5.1"
-            runsOn: macos-11
+            runs-on: macos-11
           - swift: "5.3"
             xcode: "12.4"
-            runsOn: macos-11
+            runs-on: macos-11
           - swift: "5.2"
             xcode: "11.7"
-            runsOn: macos-11
+            runs-on: macos-11
     steps:
       - uses: actions/checkout@v3
       - name: Building in Swift ${{ matrix.swift }}
         run: xcodebuild -scheme FloatingPanel SWIFT_VERSION=${{ matrix.swift }} clean build
 
   test:
-    runs-on: ${{ matrix.runsOn }}
+    runs-on: ${{ matrix.runs-on }}
     env:
       DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
     strategy:
       fail-fast: false
       matrix:
         include:
+          - os: "17.2"
+            xcode: "15.2"
+            sim: "iPhone 15 Pro"
+            parallel: NO  # Stop random test job failures
+            runs-on: macos-13
           - os: "16.4"
             xcode: "14.3.1"
             sim: "iPhone 14 Pro"
             parallel: NO  # Stop random test job failures
-            runsOn: macos-13
+            runs-on: macos-13
           - os: "15.5"
             xcode: "13.4.1"
             sim: "iPhone 13 Pro"
             parallel: NO  # Stop random test job failures
-            runsOn: macos-12
+            runs-on: macos-12
     steps:
     - uses: actions/checkout@v3
     - name: Testing in iOS ${{ matrix.os }}
-      run: xcodebuild clean test -scheme FloatingPanel -workspace FloatingPanel.xcworkspace -destination 'platform=iOS Simulator,OS=${{ matrix.os }},name=${{ matrix.sim }}' -parallel-testing-enabled '${{ matrix.parallel }}'
+      run: |
+        xcodebuild clean test \
+          -workspace FloatingPanel.xcworkspace \
+          -scheme FloatingPanel \
+          -destination 'platform=iOS Simulator,OS=${{ matrix.os }},name=${{ matrix.sim }}' \
+          -parallel-testing-enabled '${{ matrix.parallel }}'
     timeout-minutes: 20
 
   example:
-    runs-on: macos-12
+    runs-on: macos-13
     env:
-      DEVELOPER_DIR: /Applications/Xcode_14.1.app/Contents/Developer
+      DEVELOPER_DIR: /Applications/Xcode_15.2.app/Contents/Developer
     strategy:
       fail-fast: false
       matrix:
@@ -83,26 +96,67 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Building ${{ matrix.example }}
-      run: xcodebuild -workspace FloatingPanel.xcworkspace -scheme ${{ matrix.example }} -sdk iphonesimulator clean build
+      run: |
+        xcodebuild clean build \
+          -workspace FloatingPanel.xcworkspace \
+          -scheme ${{ matrix.example }} \
+          -sdk iphonesimulator
 
   swiftpm:
-    runs-on: macos-12
+    runs-on: macos-13
     env:
-      DEVELOPER_DIR: /Applications/Xcode_14.1.app/Contents/Developer
+      DEVELOPER_DIR: /Applications/Xcode_15.2.app/Contents/Developer
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [iphoneos, iphonesimulator]
+        arch: [x86_64, arm64]
+        exclude:
+          - platform: iphoneos
+            arch: x86_64
+        include:
+          # 17.2
+          - platform: iphoneos
+            sys: "ios17.2"
+          - platform: iphonesimulator
+            sys: "ios17.2-simulator"
+    steps:
+    - uses: actions/checkout@v3
+    - name: "Swift Package Manager build"
+      run: |
+        xcrun swift build \
+          --sdk "$(xcrun --sdk ${{ matrix.platform }} --show-sdk-path)" \
+          -Xswiftc "-target" -Xswiftc "${{ matrix.arch }}-apple-${{ matrix.sys }}"
+
+  swiftpm_old:
+    runs-on: ${{ matrix.runs-on }}
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
     strategy:
       fail-fast: false
       matrix:
         include:
+          # 16.4
+          - target: "x86_64-apple-ios16.4-simulator"
+            xcode: "14.3.1"
+            runs-on: macos-13
+          - target: "arm64-apple-ios16.4-simulator"
+            xcode: "14.3.1"
+            runs-on: macos-13
           # 15.7
           - target: "x86_64-apple-ios15.7-simulator"
+            xcode: "14.1"
+            runs-on: macos-12
           - target: "arm64-apple-ios15.7-simulator"
-          # 16.1
-          - target: "x86_64-apple-ios16.1-simulator"
-          - target: "arm64-apple-ios16.1-simulator"
+            xcode: "14.1"
+            runs-on: macos-12
     steps:
     - uses: actions/checkout@v3
     - name: "Swift Package Manager build"
-      run: swift build -Xswiftc "-sdk" -Xswiftc "`xcrun --sdk iphonesimulator --show-sdk-path`" -Xswiftc "-target" -Xswiftc "${{ matrix.target }}"
+      run: |
+        swift build \
+          -Xswiftc "-sdk" -Xswiftc "`xcrun --sdk iphonesimulator --show-sdk-path`" \
+          -Xswiftc "-target" -Xswiftc "${{ matrix.target }}"
 
   carthage:
     runs-on: macos-11
@@ -112,7 +166,9 @@ jobs:
       run: carthage build --use-xcframeworks --no-skip-current
 
   cocoapods:
-    runs-on: macos-12
+    runs-on: macos-13
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_15.2.app/Contents/Developer
     steps:
     - uses: actions/checkout@v3
     - name: "CocoaPods: pod lib lint"

Examples/Samples/Sources/UseCases/UseCase.swift

@@ -24,6 +24,7 @@ enum UseCase: Int, CaseIterable {
     case showAdaptivePanel
     case showAdaptivePanelWithCustomGuide
     case showCustomStatePanel
+    case showCustomBackdrop
 }
 
 extension UseCase {
@@ -50,6 +51,7 @@ extension UseCase {
         case .showAdaptivePanel: return "Show Adaptive Panel"
         case .showAdaptivePanelWithCustomGuide: return "Show Adaptive Panel (Custom Layout Guide)"
         case .showCustomStatePanel: return "Show Panel with Custom state"
+        case .showCustomBackdrop: return "Show Panel with Custom Backdrop"
         }
     }
 }
@@ -83,6 +85,7 @@ extension UseCase {
         case .showAdaptivePanel: return .storyboard(String(describing: ImageViewController.self))
         case .showAdaptivePanelWithCustomGuide: return .storyboard(String(describing: AdaptiveLayoutTestViewController.self))
         case .showCustomStatePanel: return .viewController(DebugTableViewController())
+        case .showCustomBackdrop: return .viewController(UIViewController())
         }
     }
 

Examples/Samples/Sources/UseCases/UseCaseController.swift

@@ -273,6 +273,52 @@ extension UseCaseController {
             fpc.set(contentViewController: contentVC)
             fpc.ext_trackScrollView(in: contentVC)
             addMain(panel: fpc)
+
+        case .showCustomBackdrop:
+            class BlurBackdropView: BackdropView {
+                var effectView: UIVisualEffectView!
+                override var alpha: CGFloat {
+                    set {
+                        effectView.alpha = newValue
+                    }
+                    get {
+                        effectView.alpha
+                    }
+                }
+                override init() {
+                    super.init()
+
+                    let effect = UIBlurEffect(style: .prominent)
+                    let effectView = UIVisualEffectView(effect: effect)
+                    addSubview(effectView)
+                    effectView.frame = bounds
+                    effectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+                    self.effectView = effectView
+                }
+
+                required init?(coder: NSCoder) {
+                    fatalError("init(coder:) has not been implemented")
+                }
+            }
+            class CustomBottomLayout: FloatingPanelBottomLayout {
+                override var anchors: [FloatingPanelState: FloatingPanelLayoutAnchoring]  {
+                    return [
+                        .full: FloatingPanelLayoutAnchor(absoluteInset: 100.0, edge: .top, referenceGuide: .safeArea),
+                        .half: FloatingPanelLayoutAnchor(fractionalInset: 0.5, edge: .bottom, referenceGuide: .safeArea),
+                        .tip: FloatingPanelLayoutAnchor(fractionalInset: 0.1, edge: .bottom, referenceGuide: .safeArea),
+                    ]
+                }
+                override func backdropAlpha(for state: FloatingPanelState) -> CGFloat {
+                    return state == .full ? 0.8 : 0.0
+                }
+            }
+
+            let fpc = FloatingPanelController()
+            fpc.delegate = self
+            fpc.set(contentViewController: contentVC)
+            fpc.backdropView = BlurBackdropView()
+            fpc.layout = CustomBottomLayout()
+            addMain(panel: fpc)
         }
     }
 

Examples/Stocks/Stocks/MainViewController.swift

@@ -81,7 +81,7 @@ class MainViewController: UIViewController, FloatingPanelControllerDelegate {
     }
 
     private func hideStockTickerBanner() {
-        // Dimiss top bar with dissolve animation
+        // Dismiss top bar with dissolve animation
         UIView.animate(withDuration: 0.25) {
             self.topBannerView.alpha = 0.0
             self.labelStackView.alpha = 1.0

FloatingPanel.podspec

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
   s.name                = "FloatingPanel"
-  s.version             = "2.8.0"
+  s.version             = "2.8.2"
   s.summary             = "FloatingPanel is a clean and easy-to-use UI component of a floating panel interface."
   s.description         = <<-DESC
 FloatingPanel is a clean and easy-to-use UI component for a new interface introduced in Apple Maps, Shortcuts and Stocks app.

FloatingPanel.xcodeproj/project.pbxproj

@@ -468,6 +468,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.scenee.FloatingPanel;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -499,6 +500,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.scenee.FloatingPanel;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -521,6 +523,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.scenee.FloatingPanelTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
@@ -541,6 +544,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.scenee.FloatingPanelTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
@@ -633,6 +637,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.scenee.FloatingPanel;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -657,6 +662,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
 				PRODUCT_BUNDLE_IDENTIFIER = com.scenee.FloatingPanelTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;

README.md

@@ -9,7 +9,7 @@
 FloatingPanel is a simple and easy-to-use UI component designed for a user interface featured in Apple Maps, Shortcuts and Stocks app.
 The user interface displays related content and utilities alongside the main content.
 
-Please see also [the API reference](https://floatingpanel.github.io/2.8.0/documentation/floatingpanel/) for more details.
+Please see also [the API reference@SPI](https://swiftpackageindex.com/scenee/FloatingPanel/2.8.2/documentation/floatingpanel) for more details.
 
 ![Maps](https://github.com/SCENEE/FloatingPanel/blob/master/assets/maps.gif)
 ![Stocks](https://github.com/SCENEE/FloatingPanel/blob/master/assets/stocks.gif)

Sources/BackdropView.swift

@@ -4,7 +4,7 @@ import UIKit
 
 /// A view that presents a backdrop interface behind a panel.
 @objc(FloatingPanelBackdropView)
-public class BackdropView: UIView {
+open class BackdropView: UIView {
 
     /// The gesture recognizer for tap gestures to dismiss a panel.
     ///
@@ -12,14 +12,14 @@ public class BackdropView: UIView {
     /// To dismiss a panel by tap gestures on the backdrop, `dismissalTapGestureRecognizer.isEnabled` is set to true.
     @objc public var dismissalTapGestureRecognizer: UITapGestureRecognizer
 
-    init() {
+    public init() {
         dismissalTapGestureRecognizer = UITapGestureRecognizer()
         dismissalTapGestureRecognizer.isEnabled = false
         super.init(frame: .zero)
         addGestureRecognizer(dismissalTapGestureRecognizer)
     }
 
-    required init?(coder: NSCoder) {
+    required public init?(coder: NSCoder) {
         fatalError("init(coder:) has not been implemented")
     }
 }

Sources/Controller.swift

@@ -158,14 +158,15 @@ open class FloatingPanelController: UIViewController {
 
     /// Returns the surface view managed by the controller object. It's the same as `self.view`.
     @objc
-    public var surfaceView: SurfaceView! {
+    public var surfaceView: SurfaceView {
         return floatingPanel.surfaceView
     }
 
     /// Returns the backdrop view managed by the controller object.
     @objc
-    public var backdropView: BackdropView! {
-        return floatingPanel.backdropView
+    public var backdropView: BackdropView {
+        set { floatingPanel.backdropView = newValue }
+        get { return floatingPanel.backdropView }
     }
 
     /// Returns the scroll view that the controller tracks.
@@ -732,6 +733,7 @@ private var originalDismissImp: IMP?
 private typealias DismissFunction = @convention(c) (AnyObject, Selector, Bool, (() -> Void)?) -> Void
 extension FloatingPanelController {
     private static let dismissSwizzling: Void = {
+        guard originalDismissImp == nil else { return }
         let aClass: AnyClass! = UIViewController.self //object_getClass(vc)
         if let originalMethod = class_getInstanceMethod(aClass, #selector(dismiss(animated:completion:))),
            let swizzledImp = class_getMethodImplementation(aClass, #selector(__swizzled_dismiss(animated:completion:))) {

Sources/Core.swift

@@ -10,7 +10,13 @@ class Core: NSObject, UIGestureRecognizerDelegate {
     private weak var ownerVC: FloatingPanelController?
 
     let surfaceView: SurfaceView
-    let backdropView: BackdropView
+    var backdropView: BackdropView {
+        didSet {
+            backdropView.dismissalTapGestureRecognizer
+                .addTarget(self, action: #selector(handleBackdrop(tapGesture:)))
+        }
+    }
+
     let layoutAdapter: LayoutAdapter
     let behaviorAdapter: BehaviorAdapter
 
@@ -24,6 +30,7 @@ class Core: NSObject, UIGestureRecognizerDelegate {
                     scrollBounce = cur.bounces
                     scrollIndictorVisible = cur.showsVerticalScrollIndicator
                 }
+                scrollLocked = false
             } else {
                 if let pre = oldValue {
                     pre.isDirectionalLockEnabled = false
@@ -68,6 +75,7 @@ class Core: NSObject, UIGestureRecognizerDelegate {
     private var scrollBounce = false
     private var scrollIndictorVisible = false
     private var scrollBounceThreshold: CGFloat = -30.0
+    private var scrollLocked = false
 
     // MARK: - Interface
 
@@ -209,6 +217,9 @@ class Core: NSObject, UIGestureRecognizerDelegate {
             contentOffset = scrollView?.contentOffset
         }
 
+        if layoutAdapter.validStates.contains(state) == false {
+            state = layoutAdapter.initialState
+        }
         layoutAdapter.updateStaticConstraint()
         layoutAdapter.activateLayout(for: state, forceLayout: forceLayout)
 
@@ -725,14 +736,7 @@ class Core: NSObject, UIGestureRecognizerDelegate {
         }
 
         guard shouldAttract(to: target) else {
-            self.state = target
-            self.updateLayout(to: target)
-            self.unlockScrollView()
-            // The `floatingPanelDidEndDragging(_:willAttract:)` must be called after the state property changes.
-            // This allows library users to get the correct state in the delegate method.
-            if let vc = ownerVC {
-                vc.delegate?.floatingPanelDidEndDragging?(vc, willAttract: false)
-            }
+            self.endWithoutAttraction(target)
             return
         }
 
@@ -875,6 +879,17 @@ class Core: NSObject, UIGestureRecognizerDelegate {
         return true
     }
 
+    func endWithoutAttraction(_ target: FloatingPanelState) {
+        self.state = target
+        self.updateLayout(to: target)
+        self.unlockScrollView()
+        // The `floatingPanelDidEndDragging(_:willAttract:)` must be called after the state property changes.
+        // This allows library users to get the correct state in the delegate method.
+        if let vc = ownerVC {
+            vc.delegate?.floatingPanelDidEndDragging?(vc, willAttract: false)
+        }
+    }
+
     private func startAttraction(to state: FloatingPanelState, with velocity: CGPoint, completion: @escaping (() -> Void)) {
         os_log(msg, log: devLog, type: .debug, "startAnimation to \(state) -- velocity = \(value(of: velocity))")
         guard let vc = ownerVC else { return }
@@ -1049,29 +1064,25 @@ class Core: NSObject, UIGestureRecognizerDelegate {
     private func lockScrollView(strict: Bool = false) {
         guard let scrollView = scrollView else { return }
 
+        if scrollLocked {
+            os_log(msg, log: devLog, type: .debug, "Already scroll locked")
+            return
+        }
+        scrollBounce = scrollView.bounces
         if !strict, shouldLooselyLockScrollView {
-            if scrollView.isLooselyLocked {
-                os_log(msg, log: devLog, type: .debug, "Already scroll locked loosely.")
-                return
-            }
             // Don't change its `bounces` property. If it's changed, it will cause its scroll content offset jump at
             // the most expanded anchor position while seamlessly scrolling content. This problem only occurs where its
             // content mode is `.fitToBounds` and the tracking scroll content is smaller than the content view size.
             // The reason why is because `bounces` prop change leads to the "content frame" change on `.fitToBounds`.
             // See also https://github.com/scenee/FloatingPanel/issues/524.
         } else {
-            if scrollView.isLocked {
-                os_log(msg, log: devLog, type: .debug, "Already scroll locked.")
-                return
-            }
-
-            scrollBounce = scrollView.bounces
             scrollView.bounces = false
         }
         os_log(msg, log: devLog, type: .debug, "lock scroll view")
 
-        scrollView.isDirectionalLockEnabled = true
 
+        scrollLocked = true
+        scrollView.isDirectionalLockEnabled = true
         switch layoutAdapter.position {
         case .top, .bottom:
             scrollIndictorVisible = scrollView.showsVerticalScrollIndicator
@@ -1083,9 +1094,14 @@ class Core: NSObject, UIGestureRecognizerDelegate {
     }
 
     private func unlockScrollView() {
-        guard let scrollView = scrollView, scrollView.isLocked else { return }
+        guard let scrollView = scrollView else { return }
+        if !scrollLocked {
+            os_log(msg, log: devLog, type: .debug, "Already scroll unlocked.")
+            return
+        }
         os_log(msg, log: devLog, type: .debug, "unlock scroll view")
 
+        scrollLocked = false
         scrollView.bounces = scrollBounce
         scrollView.isDirectionalLockEnabled = false
         switch layoutAdapter.position {

Sources/Extensions.swift

@@ -109,12 +109,6 @@ extension UIGestureRecognizer.State: CustomDebugStringConvertible {
 #endif
 
 extension UIScrollView {
-    var isLocked: Bool {
-        return !showsVerticalScrollIndicator && !bounces && isDirectionalLockEnabled
-    }
-    var isLooselyLocked: Bool {
-        return !showsVerticalScrollIndicator && isDirectionalLockEnabled
-    }
     var fp_contentOffsetMax: CGPoint {
         return CGPoint(x: max((contentSize.width + adjustedContentInset.right) - bounds.width, 0.0),
                        y: max((contentSize.height + adjustedContentInset.bottom) - bounds.height, 0.0))

Sources/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.8.0</string>
+	<string>2.8.2</string>
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 </dict>

Sources/Layout.swift

@@ -782,12 +782,6 @@ class LayoutAdapter {
             NSLayoutConstraint.activate(constraint: self.fitToBoundsConstraint)
         }
 
-        var state = state
-
-        if validStates.contains(state) == false {
-            state = layout.initialState
-        }
-
         // Recalculate the intrinsic size of a content view. This is because
         // UIView.systemLayoutSizeFitting() returns a different size between an
         // on-screen and off-screen view which includes

Tests/ControllerTests.swift

@@ -334,6 +334,36 @@ class ControllerTests: XCTestCase {
         fpc.move(to: .tip, animated: false)
         XCTAssertEqual(fpc.surfaceView.frame.height, fpc.view.bounds.height - fpc.surfaceLocation(for: .tip).y)
     }
+
+    func test_switching_layout() {
+        final class FirstLayout: FloatingPanelLayout {
+            let position: FloatingPanelPosition = .bottom
+            let initialState: FloatingPanelState = .half
+            let anchors: [FloatingPanelState : FloatingPanelLayoutAnchoring] = [
+                .full: FloatingPanelLayoutAnchor(absoluteInset: 16.0, edge: .top, referenceGuide: .safeArea),
+                .half: FloatingPanelLayoutAnchor(absoluteInset: 262, edge: .top, referenceGuide: .safeArea),
+                .tip: FloatingPanelLayoutAnchor(absoluteInset: 44.0, edge: .bottom, referenceGuide: .safeArea)
+            ]
+        }
+        final class SecondLayout: FloatingPanelLayout {
+            let position: FloatingPanelPosition = .bottom
+            let initialState: FloatingPanelState = .half
+            let anchors: [FloatingPanelState : FloatingPanelLayoutAnchoring] = [
+                .half: FloatingPanelLayoutAnchor(absoluteInset: 262, edge: .top, referenceGuide: .safeArea)
+            ]
+        }
+        let fpc = FloatingPanelController()
+        fpc.layout = FirstLayout()
+        fpc.showForTest()
+
+        fpc.move(to: .tip, animated: false)
+
+        // Switch to another layout
+        fpc.layout = SecondLayout()
+        fpc.invalidateLayout()
+
+        XCTAssertEqual(fpc.state, .half)
+    }
 }
 
 private class MyZombieViewController: UIViewController, FloatingPanelLayout, FloatingPanelBehavior, FloatingPanelControllerDelegate {

Tests/CoreTests.swift

@@ -913,6 +913,27 @@ class CoreTests: XCTestCase {
             )
         }
     }
+
+    func test_handleGesture_endWithoutAttraction() throws {
+        class Delegate: FloatingPanelControllerDelegate {
+            var willAttract: Bool?
+            func floatingPanelDidEndDragging(_ fpc: FloatingPanelController, willAttract attract: Bool) {
+                willAttract = attract
+            }
+        }
+        let fpc = FloatingPanelController()
+        let scrollView = UIScrollView()
+        let delegate = Delegate()
+        fpc.showForTest()
+        fpc.delegate = delegate
+        XCTAssertEqual(fpc.state, .half)
+
+        fpc.floatingPanel.endWithoutAttraction(.full)
+
+        XCTAssertEqual(fpc.state, .full)
+        XCTAssertEqual(fpc.surfaceLocation(for: .full).y, fpc.surfaceLocation.y)
+        XCTAssertEqual(delegate.willAttract, false)
+    }
 }
 
 private class FloatingPanelLayout3Positions: FloatingPanelTestLayout {