/// <summary>
/// This is the click handler for the 'combine' button. The values of the TimePicker and DatePicker are combined into a single DateTimeOffset.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void combine_Click(object sender, RoutedEventArgs e)
{
DateTimeFormatter dateFormatter = new DateTimeFormatter("shortdate");
DateTimeFormatter timeFormatter = new DateTimeFormatter("shorttime");
// We use a calendar to determine daylight savings time transition days
Calendar calendar = new Calendar();
calendar.ChangeClock("24HourClock");
// The value of the selected time in a TimePicker is stored as a TimeSpan, so it is possible to add it directly to the value of the selected date
DateTimeOffset selectedDate = this.datePicker.Date;
DateTimeOffset combinedValue = new DateTimeOffset(new DateTime(selectedDate.Year, selectedDate.Month, selectedDate.Day) + this.timePicker.Time);
calendar.SetDateTime(combinedValue);
// If the day does not have 24 hours, then the user has selected a day in which a Daylight Savings Time transition occurs.
// It is the app developer's responsibility for validating the combination of the date and time values.
if (calendar.NumberOfHoursInThisPeriod != 24)
{
rootPage.NotifyUser("You selected a DST transition day", NotifyType.StatusMessage);
}
else
{
rootPage.NotifyUser("Combined value: " + dateFormatter.Format(combinedValue) + " " + timeFormatter.Format(combinedValue), NotifyType.StatusMessage);
}
}
/// <summary>
/// Invoked when 'Get History' button is clicked.
/// Depending on the user selection, this handler uses one of the overloaded
/// 'GetSystemHistoryAsync' APIs to retrieve the pedometer history of the user
/// </summary>
/// <param name="sender">unused</param>
/// <param name="e">unused</param>
async private void GetHistory_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
IReadOnlyList<PedometerReading> historyReadings = null;
DateTimeFormatter timestampFormatter = new DateTimeFormatter("shortdate longtime");
// Disable subsequent history retrieval while the async operation is in progress
GetHistory.IsEnabled = false;
// clear previous content being displayed
historyRecords.Clear();
try
{
if (getAllHistory)
{
DateTime dt = DateTime.FromFileTimeUtc(0);
DateTimeOffset fromBeginning = new DateTimeOffset(dt);
rootPage.NotifyUser("Retrieving all available History", NotifyType.StatusMessage);
historyReadings = await Pedometer.GetSystemHistoryAsync(fromBeginning);
}
else
{
String notificationString = "Retrieving history from: ";
Calendar calendar = new Calendar();
calendar.ChangeClock("24HourClock");
// DateTime picker will also include hour, minute and seconds from the the system time.
// Decrement the same to be able to correctly add TimePicker values.
calendar.SetDateTime(FromDate.Date);
calendar.AddNanoseconds(-calendar.Nanosecond);
calendar.AddSeconds(-calendar.Second);
calendar.AddMinutes(-calendar.Minute);
calendar.AddHours(-calendar.Hour);
calendar.AddSeconds(Convert.ToInt32(FromTime.Time.TotalSeconds));
DateTimeOffset fromTime = calendar.GetDateTime();
calendar.SetDateTime(ToDate.Date);
calendar.AddNanoseconds(-calendar.Nanosecond);
calendar.AddSeconds(-calendar.Second);
calendar.AddMinutes(-calendar.Minute);
calendar.AddHours(-calendar.Hour);
calendar.AddSeconds(Convert.ToInt32(ToTime.Time.TotalSeconds));
DateTimeOffset toTime = calendar.GetDateTime();
notificationString += timestampFormatter.Format(fromTime);
notificationString += " To ";
notificationString += timestampFormatter.Format(toTime);
if (toTime.ToFileTime() < fromTime.ToFileTime())
{
rootPage.NotifyUser("Invalid time span. 'To Time' must be equal or more than 'From Time'", NotifyType.ErrorMessage);
// Enable subsequent history retrieval while the async operation is in progress
GetHistory.IsEnabled = true;
}
else
{
TimeSpan span;
span = TimeSpan.FromTicks(toTime.Ticks - fromTime.Ticks);
rootPage.NotifyUser(notificationString, NotifyType.StatusMessage);
historyReadings = await Pedometer.GetSystemHistoryAsync(fromTime, span);
}
}
if (historyReadings != null)
{
foreach(PedometerReading reading in historyReadings)
{
HistoryRecord record = new HistoryRecord(reading);
historyRecords.Add(record);
}
rootPage.NotifyUser("History retrieval completed", NotifyType.StatusMessage);
}
}
catch (UnauthorizedAccessException)
{
rootPage.NotifyUser("User has denied access to activity history", NotifyType.ErrorMessage);
}
// Finally, re-enable history retrieval
GetHistory.IsEnabled = true;
}
/// <summary>
/// Invoked when 'Get History' button is clicked.
/// Depending on the user selection, this handler uses one of the overloaded
/// 'GetSystemHistoryAsync' APIs to retrieve the pedometer history of the user
/// </summary>
/// <param name="sender">unused</param>
/// <param name="e">unused</param>
async private void GetHistory_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
GetHistory.IsEnabled = false;
// Determine if we can access pedometers
var deviceAccessInfo = DeviceAccessInformation.CreateFromDeviceClassId(PedometerClassId);
if (deviceAccessInfo.CurrentStatus == DeviceAccessStatus.Allowed)
{
// Determine if a pedometer is present
// This can also be done using Windows::Devices::Enumeration::DeviceInformation::FindAllAsync
var sensor = await Pedometer.GetDefaultAsync();
if (sensor != null)
{
IReadOnlyList<PedometerReading> historyReadings = null;
var timestampFormatter = new DateTimeFormatter("shortdate longtime");
// Disable subsequent history retrieval while the async operation is in progress
GetHistory.IsEnabled = false;
// clear previous content being displayed
historyRecords.Clear();
try
{
if (getAllHistory)
{
var dt = DateTime.FromFileTimeUtc(0);
var fromBeginning = new DateTimeOffset(dt);
rootPage.NotifyUser("Retrieving all available History", NotifyType.StatusMessage);
historyReadings = await Pedometer.GetSystemHistoryAsync(fromBeginning);
}
else
{
String notificationString = "Retrieving history from: ";
var calendar = new Calendar();
calendar.ChangeClock("24HourClock");
// DateTime picker will also include hour, minute and seconds from the the system time.
// Decrement the same to be able to correctly add TimePicker values.
calendar.SetDateTime(FromDate.Date);
calendar.AddNanoseconds(-calendar.Nanosecond);
calendar.AddSeconds(-calendar.Second);
calendar.AddMinutes(-calendar.Minute);
calendar.AddHours(-calendar.Hour);
calendar.AddSeconds(Convert.ToInt32(FromTime.Time.TotalSeconds));
DateTimeOffset fromTime = calendar.GetDateTime();
calendar.SetDateTime(ToDate.Date);
calendar.AddNanoseconds(-calendar.Nanosecond);
calendar.AddSeconds(-calendar.Second);
calendar.AddMinutes(-calendar.Minute);
calendar.AddHours(-calendar.Hour);
calendar.AddSeconds(Convert.ToInt32(ToTime.Time.TotalSeconds));
DateTimeOffset toTime = calendar.GetDateTime();
notificationString += timestampFormatter.Format(fromTime);
notificationString += " To ";
notificationString += timestampFormatter.Format(toTime);
if (toTime.ToFileTime() < fromTime.ToFileTime())
{
rootPage.NotifyUser("Invalid time span. 'To Time' must be equal or more than 'From Time'", NotifyType.ErrorMessage);
// Enable subsequent history retrieval while the async operation is in progress
GetHistory.IsEnabled = true;
}
else
{
TimeSpan span = TimeSpan.FromTicks(toTime.Ticks - fromTime.Ticks);
rootPage.NotifyUser(notificationString, NotifyType.StatusMessage);
historyReadings = await Pedometer.GetSystemHistoryAsync(fromTime, span);
}
}
if (historyReadings != null)
{
foreach (PedometerReading reading in historyReadings)
{
HistoryRecord record = new HistoryRecord(reading);
historyRecords.Add(record);
// Get at most 100 records (number is arbitrary chosen for demonstration purposes)
if (historyRecords.Count == 100)
{
break;
}
}
rootPage.NotifyUser("History retrieval completed", NotifyType.StatusMessage);
}
}
catch (UnauthorizedAccessException)
{
rootPage.NotifyUser("User has denied access to activity history", NotifyType.ErrorMessage);
}
// Finally, re-enable history retrieval
GetHistory.IsEnabled = true;
}
else
{
rootPage.NotifyUser("No pedometers found", NotifyType.ErrorMessage);
}
}
else
{
rootPage.NotifyUser("Access to pedometers is denied", NotifyType.ErrorMessage);
}
}