public static void CheckAndCreateNotification(Context context, user_page userPage, int HR)
{
// In case the user ask to ignore and the ignore counter is still counting we will not do anything
if (ignore)
{
return;
}
// Extracting the current HB status
HRStatus heartStatus = calcCurrentStatus(userPage, HR);
// Create NotifyItem item and put it in the
statusHistoryList.Add(new NotifyItem(heartStatus, HR));
// Creating notifications for heach one of the cases
if (heartStatus != HRStatus.Normal)
{
NotifyHeartRate(context, userPage, HR, heartStatus);
}
}
private static void NotifyHeartRate(Context context, user_page userPage, int HR, HRStatus status)
{
// When the user clicks the notification, SecondActivity will start up.
Intent resultIntent = new Intent(userPage, typeof(NotificationActivity));
// Passing HR and HRStatus to notification activity
Bundle valuesForActivity = new Bundle();
valuesForActivity.PutInt("status", (int)status);
valuesForActivity.PutInt("HR", HR);
resultIntent.PutExtras(valuesForActivity);
// Construct a back stack for cross-task navigation:
TaskStackBuilder stackBuilder = TaskStackBuilder.Create(context);
stackBuilder.AddParentStack(Java.Lang.Class.FromType(typeof(NotificationActivity)));
stackBuilder.AddNextIntent(resultIntent);
// Create the PendingIntent with the back stack:
PendingIntent resultPendingIntent =
stackBuilder.GetPendingIntent(0, (int)PendingIntentFlags.UpdateCurrent | (int)PendingIntentFlags.OneShot);
// Build the notification:
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.SetAutoCancel(true) // Dismiss from the notif. area when clicked
.SetContentIntent(resultPendingIntent) // Start 2nd activity when the intent is clicked.
.SetContentTitle("Is everything OK?") // Set its title
.SetNumber(HR) // Display the HR in the Content Info
.SetSmallIcon(Resource.Drawable.emptyheart_white) // Display this icon
.SetContentText(string.Format(
"Your heart beat {0} to {1} bpm.",
status == HRStatus.Hypo ? "decreased dramaticaly" :
status == HRStatus.Hyper ? "increased dramaticaly" :
"is not stable and changed dramatically", HR)); // The message to display.
// Finally, publish the notification:
NotificationManager notificationManager =
(NotificationManager)context.GetSystemService(Context.NotificationService);
notificationManager.Notify(ButtonClickNotificationId, builder.Build());
}
private static HRStatus calcCurrentStatus(user_page userPage, int HR)
{
HRStatus last;
HRStatus retStatus = HRStatus.Normal;
DateTime now = DateTime.Now;
var lastItem = statusHistoryList.LastOrDefault();
last = lastItem.Equals(default(NotifyItem)) ? HRStatus.Normal : lastItem.heartStatus;
// Fixme: there is a period of time inwhich no matter how "normal" your heart rate you are still in
// abnormal condition - maybe we should add a counter or some thing that will tell us until when the
// status is still abnormal.
// Meanwhile - when the current status is the normal range we will consider it as normal condition
// REGARDLESS the previous condition.
switch (last)
{
case HRStatus.Hyper:
// Hypo
if (HR < minHRBound || HR <= (userPage.avg - 2 * System.Math.Sqrt(userPage.variance))) // or less than HR < |avg -2*std|
{
retStatus = HRStatus.NotStable;
}
// Hyper
if (HR > maxHRBound || HR >= (userPage.avg + 2 * System.Math.Sqrt(userPage.variance))) // or more than HR > |avg +2*std|
{
retStatus = HRStatus.Hyper;
}
break;
case HRStatus.Hypo:
// Hypo
if (HR < minHRBound || HR <= (userPage.avg - 2 * System.Math.Sqrt(userPage.variance))) // or less than HR < |avg -2*std|
{
retStatus = HRStatus.Hypo;
}
// Hyper
if (HR > maxHRBound || HR >= (userPage.avg + 2 * System.Math.Sqrt(userPage.variance))) // or more than HR > |avg +2*std|
{
retStatus = HRStatus.NotStable;
}
break;
case HRStatus.NotStable:
// Check if the limit time of none regular HB time is passed
if (now.Subtract(notStableTime) < lastItem.time)
{
retStatus = HRStatus.NotStable;
}
// Hypo
if (HR < minHRBound || HR <= (userPage.avg - 2 * System.Math.Sqrt(userPage.variance))) // or less than HR < |avg -2*std|
{
retStatus = HRStatus.Hypo;
}
// Hyper
if (HR > maxHRBound || HR >= (userPage.avg + 2 * System.Math.Sqrt(userPage.variance))) // or more than HR > |avg +2*std|
{
retStatus = HRStatus.Hyper;
}
break;
case HRStatus.Normal:
if (HR < minHRBound || HR <= (userPage.avg - 2 * System.Math.Sqrt(userPage.variance))) // or less than HR < |avg -2*std|
{
retStatus = HRStatus.Hypo;
}
// Hyper
if (HR > maxHRBound || HR >= (userPage.avg + 2 * System.Math.Sqrt(userPage.variance))) // or more than HR > |avg +2*std|
{
retStatus = HRStatus.Hyper;
}
break;
}
// In case of ublormal HR we will remove far history items from statusHistoryList
if (retStatus != HRStatus.Normal)
{
statusHistoryList.RemoveAll(x => now.Subtract(historyTime) >= x.time);
}
// In case the status OK
return(retStatus);
}
public DisplayRangeOfEntries(user_page o) { o_ = o; }
public RetrieveSingleTableEntry(user_page o) { o_ = o; }
public HeartRateSubscriptionTask(user_page o) { o_ = o; }
public HeartRateConsentTask(user_page o) { o_ = o; }
public HeartRateEventListener(user_page o) { o_ = o; }
public ConsentListener(user_page o) { o_ = o; }
