Does Xamarin.Forms support periodic background tasks?

Question

It's hard for me to find documentation on supporting background tasks for Xamarin.Forms. Does Xamarin.Forms support periodic background jobs?

I need to implement this for both Windows Phone 10 and Android.

Answer 1

XF has no implementation for background tasks. You will need to implement them initially. The following are examples of how to do this for each type of project.

UWP

https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/BackgroundTask

Android https://developer.xamarin.com/guides/android/application_fundamentals/backgrounding/part_2_android_services/

WinRT

https://visualstudiomagazine.com/articles/2013/05/01/background-tasks-in-windows-store-apps.aspx

IOS

, iOS. https://developer.xamarin.com/guides/ios/application_fundamentals/backgrounding/part_3_ios_backgrounding_techniques/

Xamarin.Forms

https://xamarinhelp.com/xamarin-background-tasks/

Answer 2

, , .

, , System.Threading.Timer(.net class) - Activity/Service

private System.Threading.Timer timer;

OnCreate

TimeSpan timerTime = new TimeSpan(0, 0, 0, 0, 1000);
            timer = new System.Threading.Timer(new System.Threading.TimerCallback(OnTimerFired), null, timerTime, timerTime);

OnDestroy

if (timer != null)
            {
                timer.Change(System.Threading.Timeout.Infinite, System.Threading.Timeout.Infinite);
                timer.Dispose();
                timer = null;
            }


private void OnTimerFired(object state)
{
    Do some periodic job
}

Answer 3

Xamarin.Forms.Device.StartTimer, , . true, .

http://developer.xamarin.com/api/member/Xamarin.Forms.Device.StartTimer/