The sample seems working as it supposed to. Having a question, when the notification is showing up in the taskbar and when clicking it the Earthquake activity is started. But if the Earthquake activity is already in front, still a second Earthquake instance is lunched. What is the way to only lunch the Earthquake if there is no instance of it is active?

Hi Lanny,

How did it appear to you that 2 instances of earthquake are active?
When i repeated this (clicking a notification with an earthquake app running) then i see just one earthquake active in the list of active applications.

Ok, i understand a new instance of the activity (earthquake) is formed when that activity is already there in the back stack.
To prevent an existing activity to be relaunched, you could try to set :

android:launchMode="singleTop" in the earthquake activity declarations in the manifest xml.
See also : http://developer.android.com/guide/t...y-element.html