title: android:how to check if application is running in background
body: <p>I am newbie to android. I have client server based application. Server keeps on sending the update notifications to client after every single minute and at client side my app receive those updates and display it using Toast. But now my problem is whenever my client app goes into the background server keeps on sending the update notifications and my client display it as if the application is in foreground. I am not getting how to check that application is running in background.  </p>