monodroid-samples | A collection of Xamarin.Android sample projects | Android library

I am trying to implement a Xamarin storage provider as per the example here.

https://github.com/xamarin/monodroid-samples/tree/master/StorageProvider

The issue is that I want the user to log in before I render the root folders.

The method used to query the roots is the following:

public override ICursor QueryRoots(string[] projection)

This is called when the app first launches, but does not seem to be called subsequently.

If I log in (hard coded credentials) straight away, this works fine. However if I open the app so I can add some login details manually then this does not get called again and therefore does not re-render the correct roots.

Has anyone got any ideas how I force Android to re-call this method again to refresh this list?

I have created a custom document provider for Android using this code as a base.

https://docs.microsoft.com/en-us/samples/xamarin/monodroid-samples/storageprovider/

This allows for a new drive to be mapped onto the documents folder when browsing/saving documents.

If there is an exception due to a password timeout for example, I would like to pop back up the existing app so the users can entered their credentials again to log in.

Is this possible? As an example of what I am looking for, if the QueryRoots failed with a particular exception, could I run something to pop back up the app interface here?

I am trying to get to grips with creating a custom document provider on Android Xamarin.

I have got an example base template from here...

https://docs.microsoft.com/en-us/samples/xamarin/monodroid-samples/storageprovider/

This creates a dummy provider using the internal memory of the phone, I would instead like to swap this out to use a cloud provider and then read/write the data to cloud storage.

I have managed to get it reading ok, but when I try and save I cannot work out how to get the data to then save to the cloud.

When you press save on the phone it hits the following method in the example provider code.

Trying to create my first Xamarin foreground service but can't find a suitable example. The examples in Microsoft documentation seem to be either incomplete or use depreciated Notification.Builder:

https://docs.microsoft.com/en-us/xamarin/android/app-fundamentals/services/foreground-services

https://docs.microsoft.com/en-us/samples/xamarin/monodroid-samples/applicationfundamentals-servicesamples-foregroundservicedemo/

I've found ONE code example that seems to be up to date, but I'm struggling to decipher how it works by looking at the code:

https://docs.microsoft.com/en-us/samples/xamarin/monodroid-samples/android-o-androidplaylocation-locupdfgservice/

Can anyone give me an example of how to create basic foreground service?