Question

我当前正在构建一个应用程序，您可以在其中阅读最近7天的HeartRate。一旦您请求数据，它就会显示在UITableView中，无论何时加载数据，您都可以通过电子邮件按钮发送结果。然后在电子邮件正文中填满所有DataHeart。我希望只获取时间和心跳率，但是我没有办法清楚地解析它。同样，每当我按下“提交”或“取消”按钮时，我都无法返回上一屏幕。该应用程序不会崩溃或出现任何错误，它只会让我返回。

这是我的代码块：

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        getHealthKitPermission()
    }


    let healthStore = HKHealthStore()

    var heartRateData: [HKSample]?

    @IBOutlet weak var tblHeartRateData: UITableView!
    @IBAction func getHeartRate(_ sender: Any) {

        getTodaysHeartRate { (result) in
            DispatchQueue.main.async {

                self.heartRateData = result
                self.tblHeartRateData.reloadData()
            }
        }
    }
    @IBAction func emailResult(_ sender: Any) {
        self.sendEmail()
    }


    func getTodaysHeartRate(completion: (@escaping ([HKSample]) -> Void)) {
        print("func")

        let heartRateType:HKQuantityType = HKQuantityType.quantityType(forIdentifier: .heartRate)!

        let startDate = Date() - 7 * 24 * 60 * 60
        let endDate = Date()
        let predicate = HKQuery.predicateForSamples(withStart: startDate, end: endDate, options: [])

        let sortDescriptors = [
            NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: false)
        ]

        let heartRateQuery = HKSampleQuery(sampleType: heartRateType,
                                           predicate: predicate,
                                           limit: Int(HKObjectQueryNoLimit),
                                           sortDescriptors: sortDescriptors)
        { (query:HKSampleQuery, results:[HKSample]?, error:Error?) -> Void in

            guard error == nil else { print("error"); return }

            completion(results!)

        }
        healthStore.execute(heartRateQuery)

    }

    func sendEmail() {
        if let currentHeartRate = heartRateData{
            if MFMailComposeViewController.canSendMail() {
                let date = Date()
                let formatter = DateFormatter()
                formatter.dateFormat = "dd.MM.yyyy"
                let result = formatter.string(from: date)
                let mail = MFMailComposeViewController()
                mail.mailComposeDelegate = self as? MFMailComposeViewControllerDelegate
                mail.setToRecipients([""])
                mail.setMessageBody("<p>Your Heart Rate is: \(currentHeartRate)<p>" + result, isHTML: true)


                present(mail, animated: true)
            } else {
                //Do nothing
            }
        }
    }
    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
        controller.dismiss(animated: true)

    }

}

extension ViewController: UITableViewDataSource, UITableViewDelegate {

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return heartRateData?.count ?? 0
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! HeartDataTableViewCell

        let heartRateUnit:HKUnit = HKUnit(from: "count/min")
        let heartData = self.heartRateData?[indexPath.row]
        guard let currData:HKQuantitySample = heartData as? HKQuantitySample else { return UITableViewCell()}

        cell.labelTimes.text = "Times: \(startDateSring)"
        cell.labelHeartRate.text = "Heart Rate: \(currData.quantity.doubleValue(for: heartRateUnit))"
        let startDateFormatter = DateFormatter()
        startDateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
        startDateFormatter.timeZone = TimeZone.current
        let startDateSring = startDateFormatter.string(from: currData.startDate)



        return cell
    }

    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return
    }
}

Answer 1

您的电子邮件发送功能应如下所示：

Character

请注意，您需要符合邮件撰写委托，例如：

Character

Swift-解析电子邮件中的数据返回

1 个答案: