Layout TVOS上SwiftUI的布局问题

我在TVOS中使用SwiftUI有一个可行的UI，但我不知道如何使其正确布局

目标：

屏幕为全屏，未插入安全区域

相册图像为方形，保留纵横比，从上到下填充

相册和艺术家文本舒适地布置在相册艺术附近

如果有帮助，以下是相关的帮助程序和数据源方法：

DataStore（）类具有以下方法：

import SwiftUI
import Combine

class CurrentRoom {
    var artist: String?
    var title: String?
    var album: String?
    var albumArtURI: String?
    var absoluteAlbumArtURI: String?
    var albumImage: UIImage?
}

class DataStore: ObservableObject {
    @Published var currentRoom: CurrentRoom = CurrentRoom()
        
    init() {
        getCurrentRoom()
    }
    
    func getCurrentRoom() {
        currentRoom.artist = "Eilen Jewell"
        currentRoom.album = "Sundown over Ghost Town"
        currentRoom.title = "Half-Broke Horse"
        currentRoom.absoluteAlbumArtURI = "https://images-na.ssl-images-amazon.com/images/I/71mkKfTQD0L._SX425_.jpg"
        currentRoom.albumImage = Api().getImageDataFromURI(UrlAsString: currentRoom.absoluteAlbumArtURI)
    }
}

struct DataStore_Previews: PreviewProvider {
    static var previews: some View {
        /*@START_MENU_TOKEN@*/Text("Hello, World!")/*@END_MENU_TOKEN@*/
    }
}

最后：

class Api {
    func getImageDataFromURI(UrlAsString: String?) -> UIImage? {
        if let URI = UrlAsString {
            if URI.starts(with: "http") {
                if let url = URL(string: URI) {
                    let data = try? Data(contentsOf: url)

                    if let imageData = data {
                        return UIImage(data: imageData)
                    }
                }
            }
        }
        return nil
    }
}

---

目标：

您可以选择Asperis answer，或者，如果ContentMode.Fit对您很重要（因为您不想剪裁图像），只需删除图像上帧修改器的宽度部分，然后在VStack后面添加一个间隔符，这将消耗其余部分：

struct ContentView: View {
@ObservedObject var ds = DataStore()

var body: some View {
    HStack(alignment: .top) {
            if (ds.currentRoom.albumImage != nil) {
                Image(uiImage: ds.currentRoom.albumImage!)
                    .resizable()
                    .aspectRatio(contentMode: ContentMode.fit)
                    .frame(minHeight: 0, maxHeight: .infinity)
                    .background(Color.black)
                
            }
            VStack(alignment: .leading, spacing: 8) {
                Text(ds.currentRoom.artist ?? "?")
                    .font(.system(.title, design: .default))
                    .bold()
                    .foregroundColor(Color.gray)
                    .padding(.top, 100)
                Text(ds.currentRoom.title ?? "?")
                    .font(.system(.headline, design: .default))
                    .foregroundColor(Color.gray)
                    .padding(.bottom, 100)
                Button(action: { print ("pressed!" )} ) {
                    Image(systemName: "playpause")
                        .font(.system(.title, design: .default))
                        .foregroundColor(Color.gray)
                        .padding(30)
                        .overlay(
                            RoundedRectangle(cornerRadius: 16)
                                .stroke(Color.green, lineWidth: 4)
                    )
                }
            }
            .padding(.leading, 10)
        Spacer()
        }
    .padding(20)
    .background(Color.black)
    .edgesIgnoringSafeArea(.all)
    }
}

这将产生以下图像：

---

您肯定需要ContentMode.fill，否则，即使图像的边框会按照您的需要对齐，但由于纵横比不合适，图像本身在“逐帧拟合”中可能会在水平或垂直方向上留下空白。

struct ContentView: View {
@ObservedObject var ds = DataStore()

var body: some View {
    HStack(alignment: .top) {
            if (ds.currentRoom.albumImage != nil) {
                Image(uiImage: ds.currentRoom.albumImage!)
                    .resizable()
                    .aspectRatio(contentMode: ContentMode.fit)
                    .frame(minHeight: 0, maxHeight: .infinity)
                    .background(Color.black)
                
            }
            VStack(alignment: .leading, spacing: 8) {
                Text(ds.currentRoom.artist ?? "?")
                    .font(.system(.title, design: .default))
                    .bold()
                    .foregroundColor(Color.gray)
                    .padding(.top, 100)
                Text(ds.currentRoom.title ?? "?")
                    .font(.system(.headline, design: .default))
                    .foregroundColor(Color.gray)
                    .padding(.bottom, 100)
                Button(action: { print ("pressed!" )} ) {
                    Image(systemName: "playpause")
                        .font(.system(.title, design: .default))
                        .foregroundColor(Color.gray)
                        .padding(30)
                        .overlay(
                            RoundedRectangle(cornerRadius: 16)
                                .stroke(Color.green, lineWidth: 4)
                    )
                }
            }
            .padding(.leading, 10)
        Spacer()
        }
    .padding(20)
    .background(Color.black)
    .edgesIgnoringSafeArea(.all)
    }
}