let native scrollview handle layout

modules/bottom-sheet/ios/BottomSheetModule.swift

@@ -23,6 +23,10 @@ public class BottomSheetModule: Module {
         view.updateLayout()
       }
 
+      Prop("containerBackgroundColor") { (view: SheetView, prop: UIColor) in
+        view.containerBackgroundColor = prop
+      }
+      
       Prop("cornerRadius") { (view: SheetView, prop: Float) in
         view.cornerRadius = CGFloat(prop)
       }

modules/bottom-sheet/ios/BottomSheetScrollView.swift

@@ -0,0 +1,35 @@
+//
+//  BottomSheetScrollView.swift
+//  Pods
+//
+//  Created by Hailey on 10/9/24.
+//
+
+class BottomSheetScrollView: UIScrollView, UIScrollViewDelegate {
+  private var previousHeight: CGFloat?
+  
+  init() {
+    super.init(frame: .zero)
+    if let window = Util.getWindow() {
+      self.frame = window.bounds
+      self.contentInset = UIEdgeInsets(top: 0,
+                                       left: 0,
+                                       bottom: window.safeAreaInsets.bottom,
+                                       right: 0)
+    }
+  }
+  
+  required init?(coder: NSCoder) {
+    fatalError("init(coder:) has not been implemented")
+  }
+  
+  override func layoutSubviews() {
+    super.layoutSubviews()
+    
+    if let height = self.subviews.first?.frame.size.height,
+       self.previousHeight != height,
+       let window = self.window {
+      self.contentSize = CGSize(width: window.bounds.width, height: height + window.safeAreaInsets.bottom)
+    }
+  }
+}

modules/bottom-sheet/ios/SheetView.swift

@@ -5,9 +5,14 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
   // Views
   private var sheetVc: SheetViewController!
   private var innerView: UIView?
+  private var contentHeight: CGFloat? {
+    get {
+      self.innerView?.frame.height
+    }
+  }
   
   // Scroll view
-  private var scrollView: RCTScrollView?
+  private var scrollView: BottomSheetScrollView!
   
   // Touch handler
   private var touchHandler: RCTTouchHandler?
@@ -29,6 +34,11 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
   // React view props
   var preventDismiss = false
   var preventExpansion = false
+  var containerBackgroundColor: UIColor? {
+    didSet {
+      self.scrollView.backgroundColor = containerBackgroundColor
+    }
+  }
   var cornerRadius: CGFloat?
   var minHeight = 0.0
   var maxHeight: CGFloat = Util.getScreenHeight() {
@@ -79,11 +89,16 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
   required init (appContext: AppContext? = nil) {
     super.init(appContext: appContext)
     
+    self.scrollView = BottomSheetScrollView()
+    
     self.sheetVc = SheetViewController()
     if let sheet = self.sheetVc.sheetPresentationController {
       sheet.delegate = self
     }
+    self.sheetVc.view.addSubview(self.scrollView)
     
+    self.touchHandler = RCTTouchHandler(bridge: appContext?.reactBridge)
+        
     SheetManager.shared.add(self)
   }
 
@@ -91,36 +106,23 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
     self.destroy()
   }
 
-  // We don't want this view to actually get added to the tree, so we'll simply store it for adding
-  // to the SheetViewController
   override func insertReactSubview(_ subview: UIView!, at atIndex: Int) {
-    let touchHandler = RCTTouchHandler(bridge: self.appContext?.reactBridge)
-    touchHandler?.attach(to: subview)
-    
-    self.touchHandler = touchHandler
+    self.touchHandler?.attach(to: subview)
+    self.scrollView.addSubview(subview)
     self.innerView = subview
+    self.present()
   }
 
-  // We'll grab the content height from here so we know the initial detent to set
   override func layoutSubviews() {
     super.layoutSubviews()
-
-    guard let innerView = self.innerView else {
-      return
-    }
-
-    if innerView.subviews.count != 1 {
-      return
-    }
-
     self.present()
   }
 
   private func destroy() {
-    self.isClosing = false
-    self.isOpen = false
     self.touchHandler?.detach(from: self.innerView)
     self.touchHandler = nil
+    self.isClosing = false
+    self.isOpen = false
     SheetManager.shared.remove(self)
   }
 
@@ -130,13 +132,11 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
     guard !self.isOpen,
           !self.isOpening,
           !self.isClosing,
-          let innerView = self.innerView,
-          let contentHeight = innerView.subviews.first?.frame.height,
+          let contentHeight = self.contentHeight,
           let rvc = self.reactViewController() else {
       return
     }
 
-    self.sheetVc.view.addSubview(innerView)
     self.sheetVc.setDetents(contentHeight: self.clampHeight(contentHeight), preventExpansion: self.preventExpansion)
     if let sheet = sheetVc.sheetPresentationController {
       sheet.preferredCornerRadius = self.cornerRadius
@@ -153,7 +153,7 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
 
   func updateLayout() {
     if self.prevLayoutDetentIdentifier == self.selectedDetentIdentifier,
-       let contentHeight = self.innerView?.subviews.first?.frame.size.height {
+       let contentHeight = self.contentHeight {
       self.sheetVc.updateDetents(contentHeight: self.clampHeight(contentHeight),
                                   preventExpansion: self.preventExpansion)
       self.selectedDetentIdentifier = self.sheetVc.getCurrentDetentIdentifier()

modules/bottom-sheet/ios/Util.swift

@@ -6,9 +6,16 @@
 //
 
 class Util {
-  static func getScreenHeight() -> CGFloat {
+  static func getWindow() -> UIWindow? {
     if let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
-     let window = windowScene.windows.first {
+       let window = windowScene.windows.first {
+      return window
+    }
+    return nil
+  }
+  
+  static func getScreenHeight() -> CGFloat {
+    if let window = Self.getWindow() {
       let safeAreaInsets = window.safeAreaInsets
       let fullScreenHeight = UIScreen.main.bounds.height
       return fullScreenHeight - (safeAreaInsets.top + safeAreaInsets.bottom)

modules/bottom-sheet/src/BottomSheetNativeComponent.tsx

@@ -65,7 +65,7 @@ export class BottomSheetNativeComponent extends React.Component<
   }
 
   render() {
-    const {children, backgroundColor, ...rest} = this.props
+    const {children, ...rest} = this.props
     const cornerRadius = rest.cornerRadius ?? 0
 
     if (!this.state.open) {
@@ -81,23 +81,20 @@ export class BottomSheetNativeComponent extends React.Component<
           position: 'absolute',
           height: screenHeight,
           width: '100%',
-        }}
-        containerBackgroundColor={backgroundColor}>
-        <View
-          style={[
-            {
-              flex: 1,
-              backgroundColor,
-            },
-            Platform.OS === 'android' && {
-              borderTopLeftRadius: cornerRadius,
-              borderTopRightRadius: cornerRadius,
-            },
-          ]}>
-          <ScrollView>
-            <BottomSheetPortalProvider>{children}</BottomSheetPortalProvider>
-          </ScrollView>
-        </View>
+        }}>
+        {/*<View*/}
+        {/*  style={[*/}
+        {/*    {*/}
+        {/*      flex: 1,*/}
+        {/*      backgroundColor,*/}
+        {/*    },*/}
+        {/*    Platform.OS === 'android' && {*/}
+        {/*      borderTopLeftRadius: cornerRadius,*/}
+        {/*      borderTopRightRadius: cornerRadius,*/}
+        {/*    },*/}
+        {/*  ]}>*/}
+        <BottomSheetPortalProvider>{children}</BottomSheetPortalProvider>
+        {/*</View>*/}
       </NativeView>
     )
   }