如何使用主页快速操作打开特定视图 [英] How to open to a specific view using home quick actions

问题描述

我是 Swift 的新手，一直在使用 SwiftUI，而不是 Storyboard.

I am new to Swift and have been using SwiftUI, not Storyboard.

我在 Info.plist 中设置了 UIApplicationShortcutItems，并有两个快速操作可以通过 launchOptions 显示警报.

I set the UIApplicationShortcutItems in the Info.plist and have two quick actions that are able to present an alert with launchOptions.

我可以在 SceneDelegate.swift 中切换快速操作

I am able to switch-case out the quick actions in SceneDelegate.swift

func windowScene(_ windowScene: UIWindowScene, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) {
    switch shortcutItem.type {
    case "QuickAction1":
        OneView() // What do I do to open this SwiftUI struct View?
        break
    case "QuickAction2":
        SecondView() // What do I do to open this SwiftUI struct View?
        break
    default:
        break
    }
}

使用 SwiftUI 从主页快速操作打开特定视图的正确方法是什么?

What is the proper way to open a particular view from a home quick action using SwiftUI?

ContentView.swift

ContentView.swift

struct ContentView: View {
    var body: some View {
        NavigationView {
            VStack {
                NavigationLink(destination: OneView())
                NavigationLink(destination: TwoView())
            }
        }
    }
}

推荐答案

以下是可能的方法(使用 Xcode 11.2/iOS 13.2 测试)

Here is possible approach by steps (tested with Xcode 11.2 / iOS 13.2)

1) 添加AppSettings 类来存储快捷方式呈现的视图模式

1) Add AppSettings class to store mode of views to be presented by shorcut

class AppSettings: ObservableObject {
    enum Mode {
        case one
        case two
    }
    @Published var mode: Mode? = nil
}

2) 让 appSettings 场景委托成员访问它，并在 ContentView 和快捷方式委托中将其作为环境对象传递到 ContentView 中

2) make appSettings scene delegate member to access it and in ContentView and in shortcut delegate and pass it in ContentView as environment object

let appSettings = AppSettings()

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {

    let contentView = ContentView().environmentObject(appSettings)
    // ...

3) 在快捷场景委托中激活相应的模式

3) activate corresponding mode in shortcut scene delegate

func windowScene(_ windowScene: UIWindowScene, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) {
    switch shortcutItem.type {
    case "QuickAction1":
        appSettings.mode = .one
        break
    case "QuickAction2":
        appSettings.mode = .two
        break
    default:
        break
    }
}

4) 让 ContentView 根据选择的快捷方式有条件地呈现链接

4) Make ContentView present links conditionally based on selected shortcut mode

struct ContentView: View {
    @EnvironmentObject var appSettings: AppSettings

    var body: some View {
        NavigationView {
            VStack {
                NavigationLink(destination: OneView(),
                               tag: AppSettings.Mode.one,
                               selection: $appSettings.mode)
                    { Text("To One") }
                NavigationLink(destination: TwoView(),
                                tag: AppSettings.Mode.two,
                                selection: $appSettings.mode)
                    { Text("To Two") }
            }
        }
    }
}

这篇关于如何使用主页快速操作打开特定视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！