anybody knows what can be the reason
for when i start a service from an
Activity, the emulator shows a message
"the activity is not responding?"
Because something in your application -- the activity, the service, etc. -- is tying up the main application thread.
Inside my Service i start 2 threads in
order to make some tasks. can be this
the cause of the problem?
Not directly, no, though you really should consider using AsyncTask
rather than forking your own threads
Doing long-running work on the main application thread, or tying it up with a sleep()
or busy-loop, will cause this exception.