How to track online / offline status of the user

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Good Day Everyone 

i am tracking the users status on the app from the events in app.cs , i use the following tracking like this

OnStart

protected override async void OnStart()
{
   await Task.Run(() => OnlineStatuspdate(1));
}

OnSleep

protected override async void OnSleep()
               {
                           await Task.Run(() => OnlineStatuspdate(0));
               }

OnResume

protected override async void OnResume()
     {
       await Task.Run(() => OnlineStatuspdate(1));
     }

after all this the status of some users remain online even though the users closed the app. can one advice on this.

Thanks

What I have tried:

Checked different methods and they dont work

Posted 16-Oct-22 3:44am

Vimalsoft(Pty) Ltd

Updated 16-Oct-22 20:30pm

v6

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Member 15627495 16-Oct-22 10:36am

use a 'timer' , it's coding an "afk" system. ( "away from keyboard" you know )

when the user is using the app, the afk is off ... and when one minute spent without use of the app, afk become ON.

about your code : onstart , and onresume are equals .

Dave Kreskowiak 16-Oct-22 11:36am

That depends on what you mean by "online" and "offline". Are you talking about using your app? Connected to internet? Connected to WiFi? You're going to have to be a lot more specific if you want an answer to this.

Vimalsoft(Pty) Ltd 16-Oct-22 12:15pm

That is correct , if the user is connected to the internet or closed the app the app is not closed just minimized.

Dave Kreskowiak 16-Oct-22 17:06pm

You might make something work with the NetworkChange Class (System.Net.NetworkInformation)[^]

[no name] 16-Oct-22 12:21pm

"OnSleep" is not the same as a "shutdown" event ... for which there is none.

Vimalsoft(Pty) Ltd 16-Oct-22 12:25pm

That is correct onSleep will happen when the app is still active but the user has switch to another app. that is fine. i also thought of using signalR to track such but i thought it will be a lot resources to use for just that

Richard Deeming 17-Oct-22 6:14am

This is one of the many reasons you should avoid async void methods[^] where possible. Your method returns before the task completes, so the app can and will shut down without waiting for your OnlineStatuspdate to finish.

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Sandeep Mewara · Answer 1 · 2022-10-16T20:30:00

You need to go through the followings:
The Connectivity class lets you monitor for changes in the device's network conditions, check the current network access, and how it is currently connected: Xamarin.Essentials: Connectivity - Xamarin | Microsoft Learn[^]

High level steps from it:
1. Provide AccessNetworkState permission
2. Add a reference to Xamarin.Essentials in your class
3. With above, you can check network access as:

C#

var current = Connectivity.NetworkAccess;

if (current == NetworkAccess.Internet)
{
    // Connection to internet is available
}

You can also setup for any connectivety change trigger as:

C#

public class ConnectivityTest
{
    public ConnectivityTest()
    {
        // Register for connectivity changes, be sure to unsubscribe when finished
        Connectivity.ConnectivityChanged += Connectivity_ConnectivityChanged;
    }

    void Connectivity_ConnectivityChanged(object sender, ConnectivityChangedEventArgs e)
    {
        var access = e.NetworkAccess;
        var profiles = e.ConnectionProfiles;
    }
}

More details on how to use Xamarin.Essentials: Easily Check Mobile Device Connectivity with Xamarin.Essentials - Xamarin Blog[^]