/// <summary>
/// Sets zero based calendar hour.
/// </summary>
internal static void SetZeroBasedHour(this Windows.Globalization.Calendar calendar, int hour)
{
if (calendar.GetClock() == ClockIdentifiers.TwentyFourHour)
{
if (hour < 0 || hour > 23)
{
throw new ArgumentException("Hour should be between 0 and 23.");
}
calendar.AddHours(hour - calendar.Hour);
}
else
{
if (hour < 0 || hour > 11)
{
throw new ArgumentException("Hour should be between 0 and 11.");
}
var calendarHour = calendar.Hour == 12 ? 0 : calendar.Hour;
calendar.AddHours(hour - calendarHour);
}
}
private void ShowResults_Click(object sender, RoutedEventArgs e)
{
// This scenario uses the Windows.Globalization.Calendar class to enumerate through a calendar and
// perform calendar math
StringBuilder results = new StringBuilder();
results.AppendLine("The number of years in each era of the Japanese era calendar is not regular. " +
"It is determined by the length of the given imperial era:");
results.AppendLine();
// Create Japanese calendar.
Calendar calendar = new Calendar(new[] { "en-US" }, CalendarIdentifiers.Japanese, ClockIdentifiers.TwentyFourHour);
// Enumerate all supported years in all supported Japanese eras.
for (calendar.Era = calendar.FirstEra; true; calendar.AddYears(1))
{
// Process current era.
results.AppendLine("Era " + calendar.EraAsString() + " contains " + calendar.NumberOfYearsInThisEra + " year(s)");
// Enumerate all years in this era.
for (calendar.Year = calendar.FirstYearInThisEra; true; calendar.AddYears(1))
{
// Begin sample processing of current year.
// Move to first day of year. Change of month can affect day so order of assignments is important.
calendar.Month = calendar.FirstMonthInThisYear;
calendar.Day = calendar.FirstDayInThisMonth;
// Set time to midnight (local).
calendar.Period = calendar.FirstPeriodInThisDay; // All days have 1 or 2 periods depending on clock type
calendar.Hour = calendar.FirstHourInThisPeriod; // Hours start from 12 or 0 depending on clock type
calendar.Minute = 0;
calendar.Second = 0;
calendar.Nanosecond = 0;
if (calendar.Year % 1000 == 0)
{
results.AppendLine();
}
else if (calendar.Year % 10 == 0)
{
results.Append(".");
}
// End sample processing of current year.
// Break after processing last year.
if (calendar.Year == calendar.LastYearInThisEra)
{
break;
}
}
results.AppendLine();
// Break after processing last era.
if (calendar.Era == calendar.LastEra)
{
break;
}
}
results.AppendLine();
// This section shows enumeration through the hours in a day to demonstrate that the number of time units in a given period (hours in a day, minutes in an hour, etc.)
// should not be regarded as fixed. With Daylight Saving Time and other local calendar adjustments, a given day may have not have 24 hours, and
// a given hour may not have 60 minutes, etc.
results.AppendLine("The number of hours in a day is not constant. " +
"The US calendar transitions from daylight saving time to standard time on 4 November 2012:\n");
// Create a DateTimeFormatter to display dates
DateTimeFormatter displayDate = new DateTimeFormatter("longdate");
// Create a gregorian calendar for the US with 12-hour clock format
Calendar currentCal = new Windows.Globalization.Calendar(new string[] { "en-US" }, CalendarIdentifiers.Gregorian, ClockIdentifiers.TwentyFourHour, "America/Los_Angeles");
// Set the calendar to a the date of the Daylight Saving Time-to-Standard Time transition for the US in 2012.
// DST ends in the America/Los_Angeles time zone at 4 November 2012 02:00 PDT = 4 November 2012 09:00 UTC.
DateTime dstDate = new DateTime(2012, 11, 4, 9, 0, 0, DateTimeKind.Utc);
currentCal.SetDateTime(dstDate);
// Set the current calendar to one day before DST change. Create a second calendar for comparision and set it to one day after DST change.
Calendar endDate = currentCal.Clone();
currentCal.AddDays(-1);
endDate.AddDays(1);
// Enumerate the day before, the day of, and the day after the 2012 DST-to-Standard time transition
while (currentCal.Day <= endDate.Day)
{
// Process current day.
DateTimeOffset date = currentCal.GetDateTime();
results.AppendFormat("{0} contains {1} hour(s)\n", displayDate.Format(date), currentCal.NumberOfHoursInThisPeriod);
// Enumerate all hours in this day.
// Create a calendar to represent the following day.
Calendar nextDay = currentCal.Clone();
nextDay.AddDays(1);
for (currentCal.Hour = currentCal.FirstHourInThisPeriod; true; currentCal.AddHours(1))
{
// Display the hour for each hour in the day.
results.AppendFormat("{0} ", currentCal.HourAsPaddedString(2));
// Break upon reaching the next period (i.e. the first period in the following day).
if (currentCal.Day == nextDay.Day && currentCal.Period == nextDay.Period)
{
break;
}
}
results.AppendLine();
}
// Display results
OutputTextBlock.Text = results.ToString();
}
/// <summary>
/// This is the click handler for the 'Default' button.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Display_Click(object sender, RoutedEventArgs e)
{
// This scenario uses the Windows.Globalization.Calendar class to enumerate through a calendar and
// perform calendar math
StringBuilder results = new StringBuilder();
results.AppendLine("The number of years in each era of the Japanese era calendar is not regular. It is determined by the length of the given imperial era:\n");
// Create Japanese calendar.
Calendar calendar = new Calendar(new[] { "en-US" }, CalendarIdentifiers.Japanese, ClockIdentifiers.TwentyFourHour);
// Enumerate all supported years in all supported Japanese eras.
for (calendar.Era = calendar.FirstEra; true; calendar.AddYears(1))
{
// Process current era.
results.AppendLine("Era " + calendar.EraAsString() + " contains " + calendar.NumberOfYearsInThisEra + " year(s)");
// Enumerate all years in this era.
for (calendar.Year = calendar.FirstYearInThisEra; true; calendar.AddYears(1))
{
// Begin sample processing of current year.
// Move to first day of year. Change of month can affect day so order of assignments is important.
calendar.Month = calendar.FirstMonthInThisYear;
calendar.Day = calendar.FirstDayInThisMonth;
// Set time to midnight (local).
calendar.Period = calendar.FirstPeriodInThisDay; // All days have 1 or 2 periods depending on clock type
calendar.Hour = calendar.FirstHourInThisPeriod; // Hours start from 12 or 0 depending on clock type
calendar.Minute = 0;
calendar.Second = 0;
calendar.Nanosecond = 0;
if (calendar.Year % 1000 == 0)
{
results.AppendLine();
}
else if (calendar.Year % 10 == 0)
{
results.Append(".");
}
// End sample processing of current year.
// Break after processing last year.
if (calendar.Year == calendar.LastYearInThisEra)
{
break;
}
}
results.AppendLine();
// Break after processing last era.
if (calendar.Era == calendar.LastEra)
{
break;
}
}
// This section shows enumeration through the hours in a day to demonstrate that the number of time units in a given period (hours in a day, minutes in an hour, etc.)
// should not be regarded as fixed. With Daylight Saving Time and other local calendar adjustments, a given day may have not have 24 hours, and
// a given hour may not have 60 minutes, etc.
results.AppendLine("\nThe number of hours in a day is not invariable. The US calendar transitions from DST to standard time on 4 November 2012:\n");
// Create a DateTimeFormatter to display dates
DateTimeFormatter displayDate = new Windows.Globalization.DateTimeFormatting.DateTimeFormatter("longdate");
// Create a gregorian calendar for the US with 12-hour clock format
Calendar currentCal = new Windows.Globalization.Calendar(new string[] { "en-US" }, CalendarIdentifiers.Gregorian, ClockIdentifiers.TwentyFourHour, "america/los_angeles");
// Set the calendar to a the date of the Daylight Saving Time-to-Standard Time transition for the US in 2012.
// DST ends in the US at 02:00 on 4 November 2012
DateTime dstDate = new DateTime(2012, 11, 4);
currentCal.SetDateTime(dstDate);
// Set the current calendar to one day before DST change. Create a second calendar for comparision and set it to one day after DST change.
Calendar endDate = currentCal.Clone();
currentCal.AddDays(-1);
endDate.AddDays(1);
// Enumerate the day before, the day of, and the day after the 2012 DST-to-Standard time transition
while (currentCal.Day <= endDate.Day)
{
// Process current day.
DateTimeOffset date = currentCal.GetDateTime();
results.AppendFormat("{0} contains {1} hour(s)\n", displayDate.Format(date), currentCal.NumberOfHoursInThisPeriod);
// Enumerate all hours in this day.
// Create a calendar to represent the following day.
Calendar nextDay = currentCal.Clone();
nextDay.AddDays(1);
for (currentCal.Hour = currentCal.FirstHourInThisPeriod; true; currentCal.AddHours(1))
{
// Display the hour for each hour in the day.
results.AppendFormat("{0} ", currentCal.HourAsPaddedString(2));
// Break upon reaching the next period (i.e. the first period in the following day).
if (currentCal.Day == nextDay.Day && currentCal.Period == nextDay.Period)
{
break;
}
}
results.AppendLine();
}
// Display results
OutputTextBlock.Text = results.ToString();
}
/// <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);
}
}
