This is probably a better place to start:

http://code.google.com/android/reference/android/R.styleable.html#AndroidManifestActivity_launchMode

-Ravi

On Dec 26, 6:17 am, Ravi Yenduri <[email protected]> wrote:
> OnNewIntent() is probablythe method you are looking for.
>
> http://code.google.com/android/reference/android/app/Activity.html#on...)
>
> -Ravi
>
> On Dec 26, 2:42 am, Jay-andro <[email protected]> wrote:
>
> > I have a service that runs in the background periodically and checks a
> > database for some data. If it finds whats it's looking for, it shows
> > an Activity to the user to alert him/her of this condition. Next time
> > it runs, if the condition still persists I only want to show the
> > activity if it is not already on display. So I need to detect if the
> > activity is still on display from the last time before deciding to
> > show it again. The alert activity is in the same app as the service.
>
> > How can I reliably detect that the activity is on display?
>
> > (I could track this by setting a global and unsetting it when the
> > activity is destroyed (?) but I dont feel that's going to be reliable.
> > I'd much rather find out definitively from Android whether the
> > activity is showing or not.)
>
> > Thanks
> > Jay
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