How to solve the problem of launch the apps twice or more?

by Mark Murphy » Wed, 21 Apr 2010 18:49:53 GMT

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Please don't do that.

First, it's not possible: 

Second, it's a bad idea to even try: 

What is "it"?

Services are natural singletons -- there is exactly 0 or 1 copy of the
service running at any point. The goal is for there to be 0 copies of
the service running unless it is actively delivering user-perceived value.

Mark Murphy (a Commons Guy)  | 

_Beginning Android 2_ from Apress Now Available!


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1. Restoring focus to ListView

I have a ListView in a ListActivity that starts another Activity when
a list item is clicked.  The 2nd Activity is a Theme.Dialog, but I
don't think that matters for this purpose.

I would like the visible focus restored to the ListView when I close
the 2nd Activity.  Currently,when I come back, I have to hit the
trackball once to give focus to the ListView and then hit it again to
move around in the list.

I tried the obvious getListView().requestFocus() from onResume().  I
also tried saving the current focused view using getListView
().findFocus() before starting the 2nd Activity, but neither of these
methods work.

I am using API Level 7 in the Emulator.

Can anyone help?

Zsolt Vasvari

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