苹果ios8

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // 初始化代码
        return true
    }
}

import UIKit
import NotificationCenter

class TodayViewController: UIViewController, NCWidgetProviding {
    func widgetPerformUpdate(completionHandler: (@escaping (NCUpdateResult) -> Void)) {
        // 更新小部件内容的代码
        completionHandler(.newData)
    }
}

import HealthKit

let healthStore = HKHealthStore()

func requestAuthorization() {
    guard let typesToShare = Set([HKObjectType.quantityType(forIdentifier: .stepCount)!]) else {
        return
    }
    
    healthStore.requestAuthorization(toShare: typesToShare, read: nil) { (success, error) in
        if !success {
            print("授权失败: \(error?.localizedDescription ?? "未知错误")")
        }
    }
}