/// <summary>
/// The entry point of a background task.
/// </summary>
/// <param name="taskInstance">The current background task instance.</param>
public void Run(IBackgroundTaskInstance taskInstance)
{
// Associate a cancellation handler with the background task.
// Even though this task isn't performing much work, it can still be cancelled.
taskInstance.Canceled += new BackgroundTaskCanceledEventHandler(OnCanceled);
// Read the pedometer reports from the trigger
SensorDataThresholdTriggerDetails triggerDetails = taskInstance.TriggerDetails as SensorDataThresholdTriggerDetails;
// Ensure that this trigger is of Pedometer type
if (SensorType.Pedometer == triggerDetails.SensorType)
{
var nThFromLast = 1;
var reports = Pedometer.GetReadingsFromTriggerDetails(triggerDetails);
var settings = ApplicationData.Current.LocalSettings;
var lastReading = reports[reports.Count - nThFromLast];
var knownTimestamp = lastReading.Timestamp;
settings.Values["ReportCount"] = reports.Count.ToString();
settings.Values["LastTimestamp"] = lastReading.Timestamp;
// insert this step kind count
settings.Values[lastReading.StepKind.ToString()] = lastReading.CumulativeSteps.ToString();
// All reports that have the same timestamp correspond to step counts
// of different step kinds supported by the sensor - Parse each one of
// them and save in the application data
while (nThFromLast < reports.Count)
{
// get the next reading from the last
nThFromLast++;
lastReading = reports[reports.Count - nThFromLast];
if (knownTimestamp.UtcTicks == lastReading.Timestamp.UtcTicks)
{
// captured at the same time indicates that this step-kind data belongs to the same sample
// insert this step kind count
settings.Values[lastReading.StepKind.ToString()] = lastReading.CumulativeSteps.ToString();
}
else
{
break;
}
}
settings.Values["TaskStatus"] = "Completed at " + DateTime.Now.ToString("u");
}
// No deferral is held on taskInstance because we are returning immediately.
}