I have done these two tasks separately, but I find that when I wake
the device *and* unlock the keyguard they do not both happen. I'm sure
that's just a bug in my code. So, treat this sample with a pinch of
salt, and if you can work out what I did wrong please let me know.
PowerUp() is simple enough.
UnlockKeyguard() should be called when you want to show your activity,
and ExitKeyguard() should be called when you want to leave your
activity for somewhere else
To see the full cycle of keyguard unlocking, you need to test with and
without the 'Require Pattern' setting enabled.
Good luck!
Richard
private void PowerUp()
{
PowerManager pm = (PowerManager) getSystemService
(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(
PowerManager.SCREEN_DIM_WAKE_LOCK | // could use bright
instead
PowerManager.ACQUIRE_CAUSES_WAKEUP | // so we actually wake the
device
PowerManager.ON_AFTER_RELEASE // and we keep it on for a bit
after release
, "My Tag");
wl.acquire();
wl.release();
}
private void UnlockKeyguard()
{
if( mKeyguardLock != null )
{
return; // already unlocked
}
KeyguardManager kg = (KeyguardManager ) getSystemService
(Context.KEYGUARD_SERVICE);
if( kg.inKeyguardRestrictedInputMode())
{
mKeyguardLock = kg.newKeyguardLock( "My Tag" );
mKeyguardLock.disableKeyguard();
}
else
{
mKeyguardLock = null; // make sure we are tidy
}
}
private void exitKeyguard()
{
if( mKeyguardLock != null ) // we disabled keyguard
{
KeyguardManager kg = (KeyguardManager ) getSystemService
(Context.KEYGUARD_SERVICE);
if( kg.inKeyguardRestrictedInputMode())
{
kg.exitKeyguardSecurely(this); // show the user the
keyguard, so
they can dismiss it - response happens via the callback
onKeyguardExitResult
}
else
{
mKeyguardLock = null;
doButtonAction(); // do the actions we wanted to do
bu had to
defer till the user unlocked us
}
}
else
{
doButtonAction();
}
}
public void onKeyguardExitResult(boolean success)
{
if( success )
{
mKeyguardLock = null; // don't want this any more
doButtonAction();
}
else
{
// user didn't dismiss keyguard, doing nothing
if( mKeyguardLock != null ) // should never be null
mKeyguardLock.reenableKeyguard();
}
}
On Feb 23, 11:24 pm, SteveV <sav74...@gmail.com> wrote:
> Does anyone know how to do this correctly?
>
> I can't find any examples & the API documentation is pretty hard to
> follow.
>
> I am guessing I need to use the KeyGuardManager and PowerManager...
> but can't figure out how to bring my activity up past the keyguard and
> re-enable the keyguard so my activity doesn't let someone get past the
> lock when my activity awakens.
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