[android-developers] gps waiting problem.

i am writing one app.
in which
1. gps find lat long by calling update location
2. using this find address. this function calles in updatelocation

my que is:

update location called periodically.

it will call fun for getting address,inturn.

i dont want to call fun of getting address periodically.

it should call only once,after getting lat long.

plz help.

Plz  let me know how to start progressbar,start before calling updatelocation and stop after getting addreas.

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