public void Run(IBackgroundTaskInstance taskInstance)
{
backgroundTaskInstance = taskInstance;
var details = taskInstance.TriggerDetails as BluetoothLEAdvertisementWatcherTriggerDetails;
if (details != null)
{
// If the background watcher stopped unexpectedly, an error will be available here.
var error = details.Error;
// The Advertisements property is a list of all advertisement events received
// since the last task triggered. The list of advertisements here might be valid even if
// the Error status is not Success since advertisements are stored until this task is triggered
IReadOnlyList<BluetoothLEAdvertisementReceivedEventArgs> advertisements = details.Advertisements;
// The signal strength filter configuration of the trigger is returned such that further
// processing can be performed here using these values if necessary. They are read-only here.
var rssiFilter = details.SignalStrengthFilter;
// Advertisements can contain multiple events that were aggregated, each represented by
// a BluetoothLEAdvertisementReceivedEventArgs object.
List<iBeaconData> beacons = new List<iBeaconData>();
foreach (var adv in advertisements)
{
var beacon = adv.Advertisement.iBeaconParseAdvertisement(adv.RawSignalStrengthInDBm);
if (beacon != null)
beacons.Add(beacon);
}
var serializer = new DataContractJsonSerializer(typeof(List<iBeaconData>));
string content = string.Empty;
using (MemoryStream stream = new MemoryStream())
{
serializer.WriteObject(stream, beacons);
stream.Position = 0;
content = new StreamReader(stream).ReadToEnd();
}
// Store the message in a local settings indexed by this task's name so that the foreground App
// can display this message.
ApplicationData.Current.LocalSettings.Values[taskInstance.Task.Name] = content;
ApplicationData.Current.LocalSettings.Values[taskInstance.Task.Name + "TimeStamp"] = DateTime.Now.ToBinary();
//Warning each 5 minutes to uninstall task if not debugging anymore
if (!ApplicationData.Current.LocalSettings.Values.ContainsKey(taskInstance.Task.Name + "DebugWarning"))
ApplicationData.Current.LocalSettings.Values.Add(taskInstance.Task.Name + "DebugWarning", DateTime.Now.ToBinary());
else
{
if ((DateTime.Now-DateTime.FromBinary((long)ApplicationData.Current.LocalSettings.Values[taskInstance.Task.Name + "DebugWarning"])).TotalMinutes>=5)
{
ApplicationData.Current.LocalSettings.Values[taskInstance.Task.Name + "DebugWarning"] = DateTime.Now.ToBinary();
Windows.Data.Xml.Dom.XmlDocument toastXml = ToastNotificationManager.GetTemplateContent(ToastTemplateType.ToastText01);
Windows.Data.Xml.Dom.XmlNodeList elements = toastXml.GetElementsByTagName("text");
foreach (IXmlNode node in elements)
{
node.InnerText = taskInstance.Task.Name+ " remember to uninstall task if not debugging";
}
ToastNotification notification = new ToastNotification(toastXml);
ToastNotificationManager.CreateToastNotifier().Show(notification);
}
}
}
}
}
