donnywals · June 30, 2021 07:17 · Jun 30, 2021 · Jun 29, 2021 · Jun 29, 2021 · Jun 29, 2021
diff --git a/BottomSheetWithDetentsSwiftUI.swift b/BottomSheetWithDetentsSwiftUI.swift
@@ -25,7 +25,7 @@ struct BottomSheetPresenter<Content>: UIViewRepresentable where Content: View{
             hostingController.view.pinToEdgesOf(viewController.view)
             hostingController.didMove(toParent: viewController)
 
-            UIApplication.shared.windows.first?.rootViewController?.present(viewController, animated: true)
+            button.window?.rootViewController?.present(viewController, animated: true)
         }, for: .touchUpInside)
 
         print("make...")

diff --git a/BottomSheetWithDetentsSwiftUI.swift b/BottomSheetWithDetentsSwiftUI.swift
@@ -1,6 +1,7 @@
 import UIKit
 import SwiftUI
 
+// Hacky workaround, use at your own risk and all that
 struct BottomSheetPresenter<Content>: UIViewRepresentable where Content: View{
     let label: String
     let content: Content

diff --git a/BottomSheetWithDetentsSwiftUI.swift b/BottomSheetWithDetentsSwiftUI.swift
@@ -76,3 +76,20 @@ extension UIView {
         bottomAnchor.constraint(equalTo: other.bottomAnchor).isActive = true
     }
 }
+
+// Usage
+struct ContentView: View {
+    var body: some View {
+        VStack {
+            BottomSheetPresenter("Tap me for a bottom sheet!!", detents: [.medium(), .large()]) {
+                VStack {
+                    Text("This is a test")
+
+                    Rectangle()
+                        .frame(width: 300, height: 300, alignment: .leading)
+                        .foregroundColor(.blue)
+                }
+            }
+        }
+    }
+}
diff --git a/BottomSheetWithDetentsSwiftUI.swift b/BottomSheetWithDetentsSwiftUI.swift
@@ -0,0 +1,78 @@
+import UIKit
+import SwiftUI
+
+struct BottomSheetPresenter<Content>: UIViewRepresentable where Content: View{
+    let label: String
+    let content: Content
+    let detents: [UISheetPresentationController.Detent]
+
+    init(_ label: String, detents: [UISheetPresentationController.Detent], @ViewBuilder content: () -> Content) {
+        self.label = label
+        self.content = content()
+        self.detents = detents
+    }
+
+    func makeUIView(context: UIViewRepresentableContext<BottomSheetPresenter>) -> UIButton {
+        let button = UIButton(type: .system)
+        button.setTitle(label, for: .normal)
+        button.addAction(UIAction { _ in
+            let hostingController = UIHostingController(rootView: content)
+            let viewController = UIBottomSheetWrapper(detents: detents)
+
+            viewController.addChild(hostingController)
+            viewController.view.addSubview(hostingController.view)
+            hostingController.view.pinToEdgesOf(viewController.view)
+            hostingController.didMove(toParent: viewController)
+
+            UIApplication.shared.windows.first?.rootViewController?.present(viewController, animated: true)
+        }, for: .touchUpInside)
+
+        print("make...")
+
+        return button
+    }
+
+    func updateUIView(_ uiView: UIButton, context: Context) {
+        // no updates
+    }
+
+    func makeCoordinator() -> Void {
+        return ()
+    }
+}
+
+extension BottomSheetPresenter {
+    class UIBottomSheetWrapper: UIViewController {
+        let detents: [UISheetPresentationController.Detent]
+
+        init(detents: [UISheetPresentationController.Detent]) {
+            self.detents = detents
+            super.init(nibName: nil, bundle: nil)
+        }
+
+        required init?(coder: NSCoder) {
+            fatalError("No Storyboards")
+        }
+
+        override func viewDidLoad() {
+            super.viewDidLoad()
+
+            view.backgroundColor = .gray
+
+            if let sheetController = self.presentationController as? UISheetPresentationController {
+                sheetController.detents = detents
+            }
+        }
+    }
+}
+
+extension UIView {
+    func pinToEdgesOf(_ other: UIView) {
+        translatesAutoresizingMaskIntoConstraints = false
+
+        leftAnchor.constraint(equalTo: other.leftAnchor).isActive = true
+        topAnchor.constraint(equalTo: other.topAnchor).isActive = true
+        rightAnchor.constraint(equalTo: other.rightAnchor).isActive = true
+        bottomAnchor.constraint(equalTo: other.bottomAnchor).isActive = true
+    }
+}
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