let components = DateComponents(minute: 11, second: 14)
let futureDate = Calendar.current.date(byAdding: components, to: Date())!

Text(futureDate, style: .relative)
// Displays:
// 11 min, 14 sec

Text(futureDate, style: .offset)
// Displays:
// -11 minutes

let components = DateComponents(minute: 15)
let futureDate = Calendar.current.date(byAdding: components, to: Date())!

Text(futureDate, style: .timer)
// Displays:
// 15:00

let components = DateComponents(year: 2020, month: 4, day: 1, hour: 9, minute: 41)
let aprilFirstDate = Calendar.current(components)!

Text(aprilFirstDate, style: .date)
Text("Date: \(aprilFirstDate, style: .date)")
Text("Time: \(aprilFirstDate, style: .time)")

// Displays:
// April 1, 2020
// Date: April 1, 2020
// Time: 9:41AM

let startComponents = DateComponents(hour: 9, minute: 30)
let startDate = Calendar.current.date(from: startComponents)!

let endComponents = DateComponents(hour: 14, minute: 45)
let endDate = Calendar.current.date(from: endComponents)!

Text(startDate ... endDate)
Text("The meeting will take place: \(startDate ... endDate)")

// Displays:
// 9:30AM-2:45PM
// The meeting will take place: 9:30AM-2:45PM

public extension Date {
    var calendar: Calendar {
        return Calendar(identifier: Calendar.current.identifier)
    }
    
    //年:2020
    var year: Int {
        get {
            return calendar.component(.year, from: self)
        }
        set {
            guard newValue > 0 else { return }
            let currentYear = calendar.component(.year, from: self)
            let yearsToAdd = newValue - currentYear
            if let date = calendar.date(byAdding: .year, value: yearsToAdd, to: self) {
                self = date
            }
        }
    }
    
    //月份:2
    var month: Int {
        get {
            return calendar.component(.month, from: self)
        }
        set {
            let allowedRange = calendar.range(of: .month, in: .year, for: self)!
            guard allowedRange.contains(newValue) else { return }

            let currentMonth = calendar.component(.month, from: self)
            let monthsToAdd = newValue - currentMonth
            if let date = calendar.date(byAdding: .month, value: monthsToAdd, to: self) {
                self = date
            }
        }
    }
    
    //天:10
    var day: Int {
        get {
            return calendar.component(.day, from: self)
        }
        set {
            let allowedRange = calendar.range(of: .day, in: .month, for: self)!
            guard allowedRange.contains(newValue) else { return }

            let currentDay = calendar.component(.day, from: self)
            let daysToAdd = newValue - currentDay
            if let date = calendar.date(byAdding: .day, value: daysToAdd, to: self) {
                self = date
            }
        }
    }
    
}


//小组件时间刷新相关
public extension Date {
    //获取完整时间,2011:07:13
    func getCurrentDayStartHour(_ isDayOf24Hours: Bool)-> Date {
        let components = DateComponents(year: self.year, month: self.month, day: self.day, hour: 0, minute: 0, second: 0)
        return Calendar.current.date(from: components)!
   }
}

//使用
 Text(Date().getCurrentDayStartHour(true), style: .timer)

import WidgetKit
import SwiftUI
import Intents

struct Provider: IntentTimelineProvider {
    func placeholder(in context: Context) -> SimpleEntry {
        SimpleEntry(date: Date(), configuration: ConfigurationIntent())
    }

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

    func getTimeline(for configuration: ConfigurationIntent, in context: Context, completion: @escaping (Timeline<Entry>) -> ()) {
        var entries: [SimpleEntry] = []

        // Generate a timeline consisting of five entries an hour apart, starting from the current date.
        let currentDate = Date()
        for hourOffset in 0 ..< 5 {
            let entryDate = Calendar.current.date(byAdding: .hour, value: hourOffset, to: currentDate)!
            let entry = SimpleEntry(date: entryDate, configuration: configuration)
            entries.append(entry)
        }

        let timeline = Timeline(entries: entries, policy: .atEnd)
        completion(timeline)
    }
}

struct SimpleEntry: TimelineEntry {
    let date: Date
    let configuration: ConfigurationIntent
}

struct MCHeroEntryView : View {
    var entry: Provider.Entry
    @Environment(\.widgetFamily) var family // 尺寸环境变量
    @ViewBuilder
    var body: some View {
        switch family {
        case .systemSmall:
            ZStack{
                Image(uiImage: UIImage(named: "runwen")!)
                    .resizable()
                    .scaleEffect()
                    .edgesIgnoringSafeArea(.all)
                    .aspectRatio(contentMode: .fill)
                Text(entry.configuration.title == nil ? "英雄联盟" : entry.configuration.title!)
                    .foregroundColor(entry.configuration.isNight == true ? .white : .blue)
                    .offset(x: 50, y: 60)
            }
            
        case .systemMedium:
            // 中尺寸
            Text(entry.date, style: .time)
        default:
            Text(entry.date, style: .time)
        }
    }
}

struct MCHero: Widget {
    let kind: String = "MCHero"

    var body: some WidgetConfiguration {
        IntentConfiguration(kind: kind, intent: ConfigurationIntent.self, provider: Provider()) { entry in
            MCHeroEntryView(entry: entry)
        }
        .configurationDisplayName("My Widget")
        .description("This is an example widget.")
    }
}

struct MCHero_Previews: PreviewProvider {
    static var previews: some View {
        MCHeroEntryView(entry: SimpleEntry(date: Date(), configuration: ConfigurationIntent()))
            .previewContext(WidgetPreviewContext(family: .systemSmall))
    }
}

import Intents

class IntentHandler: INExtension, MCSmallConfigIntentHandling, MCMediumConfigIntentHandling, MCLagreConfigIntentHandling {
    
    func provideSmallTypeListOptionsCollection(for intent: MCSmallConfigIntent, with completion: @escaping (INObjectCollection<WidgetTypeSmall>?, Error?) -> Void) {
        let type_1 = WidgetTypeSmall(identifier: "进度#1", display: "进度#1")
        type_1.keyName = "进度#1"
        let type_2 = WidgetTypeSmall(identifier: "进度#2", display: "进度#2")
        type_2.keyName = "进度#2"
        let allTimeType = [type_1, type_2]
        completion(INObjectCollection(items: allTimeType), nil)
    }
    
    func provideMediumTypeListOptionsCollection(for intent: MCMediumConfigIntent, with completion: @escaping (INObjectCollection<WidgetTypeMedium>?, Error?) -> Void) {
        let type_1 = WidgetTypeMedium(identifier: "进度#1", display: "进度#1")
        type_1.keyName = "进度#1"
        let type_2 = WidgetTypeMedium(identifier: "进度#2", display: "进度#2")
        type_2.keyName = "进度#2"
        let allTimeType = [type_1, type_2]
        completion(INObjectCollection(items: allTimeType), nil)
    }
    
    func provideLagreTypeListOptionsCollection(for intent: MCLagreConfigIntent, with completion: @escaping (INObjectCollection<WidgetTypeLagre>?, Error?) -> Void) {
        let type_1 = WidgetTypeLagre(identifier: "进度#1", display: "进度#1")
        type_1.keyName = "进度#1"
        let type_2 = WidgetTypeLagre(identifier: "进度#2", display: "进度#2")
        type_2.keyName = "进度#2"
        let allTimeType = [type_1, type_2 ]
        completion(INObjectCollection(items: allTimeType), nil)
    }
    
    override func handler(for intent: INIntent) -> Any {
        return self;
    }
    
}

.widgetURL(URL(string: "medium/widgeturl_root"))

//swift
func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
        
}

//OC
-(BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options{
    if ([url.scheme isEqualToString:@"NowWidget"]){
        //执行跳转后的操作
    }
    return YES;
}

NSUserDefaults *userDefaults = [[NSUserDefaults alloc] initWithSuiteName:@"group.com.bible.gospel.group"];
    NSString *content = [userDefaults objectForKey:@"widget"];

[userDefaults setObject:cashStr forKey:@"widget"];

let sharedDefaults = UserDefaults(suiteName: "group.com.bible.gospel.group")
let content: String = sharedDefaults?.string(forKey: "widget") ?? ""