Xamarin display notification in notification bar once the file is downloaded - xamarin

Question

I have this code for downloading a file which runs correct:
var base64EncodedBytes = System.Convert.FromBase64String(item.FileDataAsBase64String);
var downloadDirectory = Path.Combine(Android.OS.Environment.ExternalStorageDirectory.AbsolutePath, Android.OS.Environment.DirectoryDownloads);
var filePath = Path.Combine(downloadDirectory, "test.pdf");
var streamWriter = File.Create(filePath);
streamWriter.Close();
File.WriteAllBytes(filePath, base64EncodedBytes);
I'm able to locate the file I downloaded in the Downloads folder, but also I want to show a notification in the notification bar that the file has been downloaded and with a click in the notifications the user to be able to open the downloaded file.
Is that possible?

Answer 1

You can use Plugin.LocalNotification to show the notification once the file is downloaded.
try
{
var base64EncodedBytes = System.Convert.FromBase64String(item.FileDataAsBase64String);
var downloadDirectory = Path.Combine(Android.OS.Environment.ExternalStorageDirectory.AbsolutePath, Android.OS.Environment.DirectoryDownloads);
var filePath = Path.Combine(downloadDirectory, "test.pdf");
var streamWriter = File.Create(filePath);
streamWriter.Close();
File.WriteAllBytes(filePath, base64EncodedBytes);
DisplayNotification("test.pdf downloaded successfully", filePath);
}
catch(System.Exception e)
{
System.Console.WriteLine(e.ToString());
DisplayNotification("Download Failed",string.Empty);
}
public void DisplayNotification(string message, string filePath)
{
var notification = new NotificationRequest
{
NotificationId = 100,
Title = "Your App name",
Description = message,
ReturningData = filePath, // Returning data when tapped on notification.
NotifyTime = DateTime.Now.AddSeconds(30) // Used for Scheduling local notification, if not specified notification will show immediately.
};
NotificationCenter.Current.Show(notification);
}
Note: Make sure to initialize the plugin setup in both the project iOS and Android.