On Mon, Apr 25, 2011 at 1:53 PM, New Developer <[email protected]> wrote:
> 1) How would you test to see if an .apk file is available  and/or installed  
> (might be different I don't know) ?

PackageManager.

> 2) Using the emulator how can you permanently install the .apk ?

You can't "permanently install" an APK except via custom firmware.
Everything else can be uninstalled.

> 3) Would this be beneficial for memory and speed performance or not ?

It would be significantly worse for memory and speed, from the user's
standpoint.

> 4) From 1.apk  how would you call 2.apk ?  (using Intent's)

There is no concept of "calling" an APK. One application can invoke
exported activities, services, content providers, and broadcast
receivers of the other application.

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy

Android Training in London: http://bit.ly/smand1, http://bit.ly/smand2

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