书接上文《SwiftUI Widget IntentConfiguration》，创建可编辑的Widget，自然是要动态定义某些数据，下面就来说怎么自定义

一、定义可编辑元素

在自定义的Siri Intent Definition File里，设置可编辑元素

edit

枚举

Types

1

2

这时候再次运行项目，编辑小组件

xzj

二、交互

创建 IntentHandler

新建

intentHandler

选择Intents Extension，创建

这是我自定义的IntentHandler

接下来勾选

记住勾选哦，很重要的

注意IntentHandler的plist

plist

代码：

• 创建model

//
//  XG_WidgetData.swift
//  XG_SwiftUI_3Day
//
//  Created by chaowen deng on 2021/4/16.
//

import Foundation
import SwiftUI


struct AnimalModel {
    let id: String
    let name: String
    let avatar: String
    var color: Color = .white
    
    static let panda = AnimalModel(id: "panda", name: "panda", avatar: "🐼")
    static let lion = AnimalModel(id: "lion", name: "lion", avatar: "🦁️")
    static let tiger = AnimalModel(id: "tiger", name: "tiger", avatar: "🐯")
    
    static let zoo = [panda, lion, tiger]
    
    static func animal(_ id: String, color: Choose) -> AnimalModel {
        var animal: AnimalModel
        
        switch id {
        case "panda":
            animal = .panda
        case "lion":
            animal = .lion
        case "tiger":
            animal = .tiger
        default:
            animal = AnimalModel(id: "cat", name: "cat", avatar: "🐱")
        }
        
        switch color {
        case .a:
            animal.color = .black
        case .b:
            animal.color = .blue
        case .c:
            animal.color = .red
        case .unknown:
            animal.color = .black
        }
        return animal
    }
}

• IntentHandler修改

//
//  IntentHandler.swift
//  XG_IntentHandler
//
//  Created by chaowen deng on 2021/4/16.
//

import Intents

class IntentHandler: INExtension, MyCustomIntentsIntentHandling {
    
    func provideAnimalOptionsCollection(for intent: MyCustomIntentsIntent, with completion: @escaping (INObjectCollection<Animal>?, Error?) -> Void) {
        
        let animalArr: [Animal] = AnimalModel.zoo.map { model in
            Animal(identifier: model.id, display: model.name)
        }
        completion(INObjectCollection(items: animalArr), nil)
    }
    
    
    override func handler(for intent: INIntent) -> Any {
        
        return self
    }
    
}

• Widget修改

//
//  XG_Widget.swift
//  XG_Widget
//
//  Created by chaowen deng on 2021/4/14.
//

import WidgetKit
import SwiftUI

struct Provider: IntentTimelineProvider {
    typealias Entry = SimpleEntry
    
    typealias Intent = MyCustomIntentsIntent
    
    
    func placeholder(in context: Context) -> SimpleEntry {
        SimpleEntry(date: Date(), animal: .lion)
    }

    func getSnapshot(for configuration: Intent, in context: Context, completion: @escaping (SimpleEntry) -> Void) {
        let entry = SimpleEntry(date: Date(), animal: .lion)
        completion(entry)
    }

    func getTimeline(for configuration: Intent, in context: Context, completion: @escaping (Timeline<SimpleEntry>) -> Void) {
        

        // Generate a timeline consisting of five entries an hour apart, starting from the current date.
        let currentDate = Date()
        
        guard let id = configuration.animal?.identifier, let entryDate = Calendar.current.date(byAdding: .minute, value: 1, to: currentDate) else {
            let timeLine = Timeline(entries: [SimpleEntry(date: currentDate, animal: .lion)], policy: .atEnd)
            completion(timeLine)
            return
        }
        
        let entry = SimpleEntry(date: entryDate, animal: AnimalModel.animal(id, color: configuration.parameter))
        
        
        let timeline = Timeline(entries: [entry], policy: .atEnd)
        completion(timeline)
    }
}

struct SimpleEntry: TimelineEntry {
    let date: Date
    let animal: AnimalModel
}

struct XG_WidgetEntryView : View {
    var entry: Provider.Entry

    var body: some View {
        
        VStack {
            Text(entry.animal.avatar)
                .font(.largeTitle)
            Text(entry.animal.name)
            Text("这是颜色")
                .background(entry.animal.color)
        }
        
        
    }
}

@main
struct XG_Widget: Widget {
    let kind: String = "XG_Widget"

    var body: some WidgetConfiguration {
        IntentConfiguration(kind: kind, intent: MyCustomIntentsIntent.self, provider: Provider()) { entry in
            XG_WidgetEntryView(entry: entry)
        }
        .configurationDisplayName("XG_SwiftUI_3Day")
        .description("这是一个测试的widget.")
    }
}

struct XG_Widget_Previews: PreviewProvider {
    static var previews: some View {
        XG_WidgetEntryView(entry: SimpleEntry(date: Date(), animal: .lion))
            .previewContext(WidgetPreviewContext(family: .systemSmall))
    }
}

效果

现在就可以编辑看到效果了，选择的列表数据由定义的AnimalModel提供，选择不同的数据，小组件展示内容会做出相应的改变