Dears,
Recently, I have tried to use the methods defined in the
class,"android.os.PowerManager". I can't know very well about what the
method,"goToSleep" means. I got the related source code, and studied
it. I found the method only has the system turn the screen off, I
don't know why turning the screen off could make the system go to
sleep.
I find another topic about this method, the link is as follow,
1.http://groups.google.com/group/android-developers/
browse_thread/thread/94312b8093042beb/eaa3fa471072f0e6?
lnk=gst&q=goToSleep#eaa3fa471072f0e6
In this list, we could know we can't use this method in the
application regardless of using DEVICE_POWER permission. So, when
could we use this method?
BTW,the description of this method in framework reference
document is here
#public void goToSleep (long time)#
Force the device to go to sleep. Overrides all the wake locks
that are held. (Does the device mean the whole system?)
Parameters
time is used to order this correctly with the wake lock
calls. The time should be in the SystemClock.uptimeMillis() time base.
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