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Java Development

Posts: 2,268
Registered: ‎07-08-2009
My Device: various
My Carrier: various

Of Timers, Timer Tasks and battery drain

Hello, all,

Recently, I've found that my application causes a lot of battery drain even when running in the background.  The reason was one TimerTask running at 20 Hz.  I started cancelling it when it was not needed and the problem went away.


However,I guess I went overboard while doing it as I'm cancelling the Timer as well, restarting both (Timer and TimerTask) when necessary.  Would just cancelling the TimerTask solve the problem?  In other words, is an active Timer without scheduled tasks a battery drain?  Or is it just a Thread that is permanently blocked?  I can find out myself, but if anyone has done such experiments, please let me know.


If there is no response here, I'll respond to this post with my own findings in a few days.




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Posts: 16,984
Registered: ‎07-29-2008
My Device: Z10 LE, Z30, Passport
My Carrier: O2 Germany

Re: Of Timers, Timer Tasks and battery drain

a timer without any timertasks should not drain the battery. if you schedule a timertask the timer is notified and wakes up i assume.
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Posts: 159
Registered: ‎08-19-2008
My Device: Not Specified

Re: Of Timers, Timer Tasks and battery drain

Can u please elaborate what kind of task your application is doing in the background..........?...........It may be ur application doing some gps , internet connection tasks after scheduled intervals .............Timer task generally (if your application not using gps,internet ) doesn't drain battery.... it just invokes specified task after some regular intervals..................But am not Knighted on this, this info is am giving only with my best of knowledge