has other way to lock the phone?

On Jul 17, 3:50 am, Marco Nelissen <marc...@android.com> wrote:
> On Wed, Jul 15, 2009 at 11:19 PM, LeoSnowland<zengrui_...@126.com> wrote:
>
> > I wanted to use the funcion goToSleep() in PowerManager Class to force
> > the device to sleep. But I'm getting an exception and the application
> > when I call this function.I already have added the DEVICE_POWER
> > permission in Androidmanifest.xml. When I checked the logs I could see
> > below error:
> >         Neither user 10018 nor current process has
> > android.permission.DEVICE_POWER
>
> That's a signature-protected permission, i.e. only apps that got
> signed as system apps are allowed to.
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