Federico Zanetello
5f1d49b0bd
Partially solves #281. This adds a new example app which mimics the Maps.app, written in SwiftUI. The code works for iOS 13+, however: * the project has been created with Xcode 13 * the project uses the SwiftUI lifecycle (iOS 14+) The source code in Examples/Maps-SwiftUI/Maps/FloatingPanel is ready to move into the library, but there is an issue on SwiftUI’s environment propagation into FloatingPanel. SwiftUI’s environment is propagated to all subviews. However FloatingPanel is not a subview, but a new view controller in the screen (and not a child view controller). It’s possible to lead behaviors unexpected by SwiftUI users so that this is merged as a sample code until it will be resolved.
50 lines
1.9 KiB
Swift
50 lines
1.9 KiB
Swift
// Copyright 2021 the FloatingPanel authors. All rights reserved. MIT license.
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import SwiftUI
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/// A `UITableViewCell` that accepts a SwiftUI view as its content.
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///
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/// Credits to https://noahgilmore.com/blog/swiftui-self-sizing-cells/ .
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public final class HostingCell<Content: View>: UITableViewCell {
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private let hostingController = UIHostingController<Content?>(
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rootView: nil,
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ignoresKeyboard: true
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)
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override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
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super.init(style: style, reuseIdentifier: reuseIdentifier)
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hostingController.view.backgroundColor = nil
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backgroundColor = .clear
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}
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@available(*, unavailable)
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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public func set(rootView: Content, parentController: UIViewController) {
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hostingController.rootView = rootView
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hostingController.view.invalidateIntrinsicContentSize()
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let requiresControllerMove = hostingController.parent != parentController
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if requiresControllerMove {
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parentController.addChild(hostingController)
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}
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if !contentView.subviews.contains(hostingController.view) {
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contentView.addSubview(hostingController.view)
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hostingController.view.translatesAutoresizingMaskIntoConstraints = false
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contentView.addConstraints([
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hostingController.view.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
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hostingController.view.topAnchor.constraint(equalTo: contentView.topAnchor),
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hostingController.view.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
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hostingController.view.bottomAnchor.constraint(equalTo: contentView.bottomAnchor)
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])
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}
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if requiresControllerMove {
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hostingController.didMove(toParent: parentController)
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}
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}
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}
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