On Mar 7, 4:49 am, howa <[email protected]> wrote:
> After a few hours, I discovered I forgot to close the Google finance
> window, it is too late, why? Since Google finance will auto get
> updated stock feed from Google every minute, so it eat a lot of my
> GPRS data usage.
Did you set the device to stay awake, i.e. no display timeout?
If you do this, apps will happily continue to run. With a caveat (see
below), data use should end when the display blanks out.
Caveat: wake locks. Apps can use what's called "wake locks" to keep
the CPU and themselves alive even when the display times out. I am
developer and I use such a scenario to trigger an alarm that the user
sets, based on real-time data that is silently pulled from a server
even if the display is off. There is no control over the real-time
feed, and in theory, the alarm that reverts the wake lock may never go
off. In addition, I assume there's no bug preventing a release of the
wake lock, which is always a risk.
So I'd say, over the lifetime of the device, there's no reasonable way
for you to nurse the data use of your device, making sure you use this
data plan in a desired way.
There's a lot of room for a detailed discussion, but let me recommend
you get an "unlimited" plan ASAP. If you get lucky, your carrier might
reduce your current bill to the "unlimited" charge.
P.S.
I develop with users of metered plans in mind, but this is the first
time I hear there's actually people using Android on such a plan. Good
luck.
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