/// <summary>
/// Installs synchronization using legacy Android features (i.e. alarms).
/// </summary>
private static void ConfigureSyncLegacy(Context applicationContext, bool enabled)
{
Log.Debug("Configuring legacy synchronization, enabled: {0}", enabled);
try {
var broadcastIntent = new Intent(applicationContext, typeof(DataSyncReceiver));
var pendingIntent = PendingIntent.GetBroadcast(applicationContext,
DataSyncPendingIntentId, broadcastIntent, PendingIntentFlags.UpdateCurrent);
AlarmManager manager = (AlarmManager)applicationContext.GetSystemService(Context.AlarmService);
manager.Cancel(pendingIntent);
if (enabled)
{
if (Build.VERSION.SdkInt >= BuildVersionCodes.Kitkat)
{
manager.SetWindow(
AlarmType.Rtc, //Deadline expressed in milliseconds from Unix epoch, does not wake up device
SyncManager.NextUploadOpportunity.ToUnixEpochMilliseconds(),
(long)((SyncManager.MaxSynchronizationInterval - SyncManager.MinSynchronizationInterval).TotalMilliseconds),
pendingIntent);
Log.Debug("Scheduled alarm on window from {0} to {1}",
SyncManager.NextUploadOpportunity, SyncManager.NextUploadDeadline);
}
else
{
manager.Set(
AlarmType.Rtc, //Deadline expressed in milliseconds from Unix epoch, does not wake up device
SyncManager.NextUploadOpportunity.ToUnixEpochMilliseconds(),
pendingIntent);
Log.Debug("Scheduled alarm at {0}",
SyncManager.NextUploadOpportunity);
}
}
}
catch (Exception ex) {
Log.Error(ex, "Failed to setup synchronization on alarm manager");
}
}
