android - Activity life cycle creating,starting and running procedure -

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if first activity image, , second activity song , calculator. if start second activity , make sleep on first activity 5000ms , kill it... sound play while first activity's image on screen? , calculator during sleep period ?

no. if "sleep" first activity, assuming talking ui thread , not background thread, whole ui sleep time...meaning second activity won't started yet , song won't play.

what put in 1 activity , put image , calculator in same position, or wherever want in layout, , hide calculator beginning in xml 

 android:visibility="invisible" // or gone depending on need

then can change visibility of both views when need. don't know want don't know if solution suitable.

you putting song in service


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