// React to a change in configuration parameters:
// Save new values to local settings
// Set link-loss alert level on the device if appropriate
// Register or unregister background task if necessary
private async void SaveSettings()
{
// Save this device's settings into nonvolatile storage
localSettings.Values[addressString] = string.Join(",", alertOnPhone, alertOnDevice, alertLevel);
// If the device is connected and wants to hear about the alert level on link loss, tell it
if (alertOnDevice && device.ConnectionStatus == BluetoothConnectionStatus.Connected)
{
await SetAlertLevelCharacteristic();
}
// If we need a background task and one isn't already registered, create one
if (TaskRegistration == null && (alertOnPhone || alertOnDevice))
{
DeviceConnectionChangeTrigger trigger = await DeviceConnectionChangeTrigger.FromIdAsync(device.DeviceId);
trigger.MaintainConnection = true;
BackgroundTaskBuilder builder = new BackgroundTaskBuilder();
builder.Name = TaskName;
builder.TaskEntryPoint = "KeepTheKeysBackground.KeyFobTask";
builder.SetTrigger(trigger);
TaskRegistration = builder.Register();
}
// If we don't need a background task but have one, unregister it
if (TaskRegistration != null && !alertOnPhone && !alertOnDevice)
{
TaskRegistration.Unregister(false);
TaskRegistration = null;
}
}
// React to a change in configuration parameters:
// Save new values to local settings
// Set link-loss alert level on the device if appropriate
// Register or unregister background task if necessary
private async void SaveSettings()
{
// Save this device's settings into nonvolatile storage
localSettings.Values[addressString] = string.Join(",", alertOnPhone, alertOnDevice, alertLevel);
// If the device is connected and wants to hear about the alert level on link loss, tell it
if (alertOnDevice && device.ConnectionStatus == BluetoothConnectionStatus.Connected)
{
await SetAlertLevelCharacteristic();
}
// If we need a background task and one isn't already registered, create one
if (TaskRegistration == null && (alertOnPhone || alertOnDevice))
{
DeviceConnectionChangeTrigger trigger = await DeviceConnectionChangeTrigger.FromIdAsync(device.DeviceId);
trigger.MaintainConnection = true;
BackgroundTaskBuilder builder = new BackgroundTaskBuilder();
builder.Name = TaskName;
builder.TaskEntryPoint = "KeepTheKeysBackground.KeyFobTask";
builder.SetTrigger(trigger);
TaskRegistration = builder.Register();
}
// If we don't need a background task but have one, unregister it
if (TaskRegistration != null && !alertOnPhone && !alertOnDevice)
{
TaskRegistration.Unregister(false);
TaskRegistration = null;
}
}
