Xamarin.Forms lifecycle

Note: This post was written a while back but sat in draft. I’ve published this now, but I’m not sure it’s relevant to the latest versions etc. so please bear this in mind.

The following is an example of what’s generated as part of the Xamarin.Forms project. 

public class App : Application
{
   protected override void OnStart()
   {
      // Handle when your app starts
   }

   protected override void OnSleep()
   {
      // Handle when your app sleeps
   }

   protected override void OnResume()
   {
      // Handle when your app resumes
   }
}
  • OnStart is called when the application starts
  • OnSleep is called when the application goes into sleep mode and/or terminates
  • OnResume is called when an application is resumed after a sleep