播放器页

image

同样，先创建代表播放器页的VedioPlayer：

import SwiftUI

struct VedioPlayer {}

Content View

我们的播放器是PlayerViewController，要在SwiftUI中使用，只需要一个类或结构体，实现协议UIViewControllerRepresentable即可，核心方法：

• makeUIViewController，返回要展示的UIViewController对象，这里是我们的PlayerViewController()，设置好视频地址和标题即可，presentation.wrappedValue.dismiss()表示popViewController()
• updateUIViewController，是在状态发生改变时，SwiftUI通知UIKit的方式，我们播放器相关的所有逻辑都在PlayerViewController里面，所以是空的

代码如下：

extension VedioPlayer {
    struct Content: UIViewControllerRepresentable {
        @Environment(\.presentationMode) var presentation
        
        let url: String
        let title: String
        
        func makeUIViewController(context: UIViewControllerRepresentableContext<Content>) -> PlayerViewController {
            let vc = PlayerViewController()
            vc.prepareFor(url: url, title: title)
            vc.tapBackHandler = {
                self.presentation.wrappedValue.dismiss()
            }
            
            return vc
        }
        
        func updateUIViewController(_ uiViewController: PlayerViewController, context: UIViewControllerRepresentableContext<Content>) {
            
        }
    }
}

Container View

Container视图的工作就是根据传入的VedioManager.File，配置Content view的视频地址和标题，注意这里也有个坑，SwiftUI中想让导航条隐藏，必须要设置标题。。

代码如下：

extension VedioPlayer {
    struct Container: View {
        let file: VedioManager.File
        
        var body: some View {
            /// For some reason, SwiftUI requires that you also set .navigationBarTitle for .navigationBarHidden to work properly.
            Content(url: file.path, title: file.name)
                .edgesIgnoringSafeArea(.all)
                .navigationBarTitle(Text(file.name), displayMode: .inline)
                .navigationBarHidden(true)
                .onDisappear { print("onDisappear") }
        }
    }
}

Root View

最后就是我们的root View，NavigationView就是UINavigationController了：

import SwiftUI

struct ContentView: View {
    var body: some View {
        NavigationView {
            VedioList.Container(path: VedioManager.root)
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}