android - Static variable is reset to null after a while -


i'm creating first android app. based on gps tracking. android app sends latitude, longitude, , misc. info (device id, time etc.) server. device id stored in static variable in home activity, , service used send locations. after time (~25 min.) elapses, static variable set null. why happen, , how can fix it?

one more thing: app works in background, i.e. it's not built continuous use other apps.

a static data member lives long process does. your process not run forever. use static data member cache, real data persisted (database, sharedpreferences, ordinary file, internet, whatever), can re-initialize data needed.


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