如何显示 AirPlay 菜单 SwiftUI

Question

感谢airplay音频系统名字表情符号我做了一个不错的图标

Button(action: {
        showAirplay()
}, label: {
    Image(systemName: "airplayaudio")
        .imageScale(.large)
})

func showAirplay() {
       ???
}

但我不知道如何显示著名的菜单：

Answer 1

最后我自己解决了：D 正如评论中所说，我必须将其“嵌入”UIKit 并在 SwiftUI 中使用它

首先：

struct AirPlayButton: UIViewControllerRepresentable {
    func makeUIViewController(context: UIViewControllerRepresentableContext<AirPlayButton>) -> UIViewController {
        return AirPLayViewController()
    }

    func updateUIViewController(_ uiViewController: UIViewController, context: UIViewControllerRepresentableContext<AirPlayButton>) {

    }
}

然后是经典的 ViewController，我们从很久以前就知道如何显示这个著名的 AirPlay 菜单弹出窗口：

class AirPLayViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        let isDarkMode = self.traitCollection.userInterfaceStyle == .dark

        let button = UIButton()
        let boldConfig = UIImage.SymbolConfiguration(scale: .large)
        let boldSearch = UIImage(systemName: "airplayaudio", withConfiguration: boldConfig)

        button.setImage(boldSearch, for: .normal)
        button.frame = CGRect(x: 0, y: 0, width: 40, height: 40)
        button.backgroundColor = .red
        button.tintColor = isDarkMode ? .white : .black

        button.addTarget(self, action: #selector(self.showAirPlayMenu(_:)), for: .touchUpInside)
        self.view.addSubview(button)
    }

    @objc func showAirPlayMenu(_ sender: UIButton){ // copied from https://stackoverflow.com/a/44909445/7974174
        let rect = CGRect(x: 0, y: 0, width: 0, height: 0)
        let airplayVolume = MPVolumeView(frame: rect)
        airplayVolume.showsVolumeSlider = false
        self.view.addSubview(airplayVolume)
        for view: UIView in airplayVolume.subviews {
            if let button = view as? UIButton {
                button.sendActions(for: .touchUpInside)
                break
            }
        }
        airplayVolume.removeFromSuperview()
    }
}

最后在 SwiftUI 中简单地调用：

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Hello World")
            AirPlayButton().frame(width: 40, height: 40) // (important to be consistent with this frame, like that it is nicely centered... see button.frame in AirPlayViewController)

        }
    }
}

Answer 2

func showAirplay() {
    let rect = CGRect(x: 0, y: 0, width: 0, height: 0)
    let airplayVolume = MPVolumeView(frame: rect)
    airplayVolume.showsVolumeSlider = false
    UIApplication.shared.windows.first?.addSubview(airplayVolume)
    for view: UIView in airplayVolume.subviews {
      if let button = view as? UIButton {
        button.sendActions(for: .touchUpInside)
        break
      }
    }
    airplayVolume.removeFromSuperview()
  }

Answer 3

为 SwiftUI 包装 AirPlay UIView 似乎是最好和最简单的解决方案。

struct AirPlayView: UIViewRepresentable {

    func makeUIView(context: Context) -> UIView {

        let routePickerView = AVRoutePickerView()
        routePickerView.backgroundColor = UIColor.clear
        routePickerView.activeTintColor = UIColor.red
        routePickerView.tintColor = UIColor.white

        return routePickerView
    }

    func updateUIView(_ uiView: UIView, context: Context) {
    }
}

用法：

VStack {
  AirPlayView()
}

Answer 4

我已根据自己的需要修改了Max's answer，并认为分享它可能会很有用。它通过自动布局适应superview，并有一个方法来调用它的action。

import SwiftUI
import AVKit

struct AirPlayView: UIViewRepresentable {
    
    private let routePickerView = AVRoutePickerView()

    let view = UIView()
    routePickerView.tintColor = .white
    routePickerView.activeTintColor = .accentColor
    
    routePickerView.translatesAutoresizingMaskIntoConstraints = false
    view.addSubview(routePickerView)

    NSLayoutConstraint.activate([
        routePickerView.topAnchor.constraint(equalTo: view.topAnchor),
        routePickerView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
        routePickerView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
        routePickerView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
    ])
    return view

    func updateUIView(_ uiView: UIView, context: 
    }
    
    func showAirPlayMenu() {
        for view: UIView in routePickerView.subviews {
            if let button = view as? UIButton {
                button.sendActions(for: .touchUpInside)
                break
            }
        }
    }
}

您仍然可以直接将其用作视图，就像 Max 的回答一样，但您也可以将其嵌入到另一个视图中，例如按钮并手动触发菜单，就像我需要的那样：

@State private var airPlayView = AirPlayView()

var body: some View {
    VStack {
        // other views

        Button(action: {
            // other actions
            airPlayView.showAirPlayMenu()
        }) {
            HStack {
                Text("Show AirPlay menu")
                
                Spacer()
                
                airPlayView
                    .frame(width: 32, height: 32)
            }
        }
        .buttonStyle(PlainButtonStyle())
    }
}