In my application I disable the keyguard lock (i.e.Remove Lockscreen) using the code below and it works fine until I click on any notification in the notification bar. If I click on a notification the lock screen is automatically re-enabled. Any help is appreciated.
private void remove_lockscreen() {
final CheckBoxPreference lock = (CheckBoxPreference) findPreference("remove_lockscreen");
KeyguardManager km = (KeyguardManager)getSystemService(KEYGUARD_SERVICE);
KeyguardLock kl = km.newKeyguardLock("keyguard_lock");
if (lock.isChecked()) {
prefEdit("remove_lockscreen", 1);
Toast.makeText(getBaseContext(), "Lockscreen will not be shown", Toast.LENGTH_SHORT).show();
kl.disableKeyguard();
}
else if (!lock.isChecked()) {
prefEdit("remove_lockscreen", 0);
Toast.makeText(getBaseContext(), "Lockscreen will be shown", Toast.LENGTH_SHORT).show();
kl.reenableKeyguard();
android.os.Process.killProcess(android.os.Process.myPid());
}
}
I've noticed the same issue for some time. It only occurs on Honeycomb (Android 3.0) and up. After a great deal of experimentation and hair-pulling, I seem to have found a solution that works for me. It's not clear exactly what's going on or why, but here's what I've figured out.
It seems that on Android 3.0+, after the keyguard is disabled, when a notification is pressed, the old KeyguardLock expires, but thankfully the ACTION_USER_PRESENT
Broadcast is fired at that point, so we have a chance to correct the issue.
One point that's not at all obvious from the documentation is that it seems to be necessary to reenable the old KeyguardLock before getting a new one and disabling it again. Another "gotcha" I discovered is that disabling through the new KeyguardLock immediately after reenabling through the old one produces only intermittent success. I resolved this by waiting 300ms before disabling.
Here's a slightly simplified version of my code; it should be easy to adapt to your app:
private KeyguardLock kl;
private KeyguardManager km;
private final Handler mHandler = new Handler();
private final Runnable runDisableKeyguard = new Runnable() {
public void run() {
kl = km.newKeyguardLock(getPackageName());
kl.disableKeyguard();
}
};
private void setEnablednessOfKeyguard(boolean enabled) {
if (enabled) {
if (kl != null) {
unregisterReceiver(mUserPresentReceiver);
mHandler.removeCallbacks(runDisableKeyguard);
kl.reenableKeyguard();
kl = null;
}
} else {
if (km.inKeyguardRestrictedInputMode()) {
registerReceiver(mUserPresentReceiver, userPresent);
} else {
if (kl != null)
kl.reenableKeyguard();
else
registerReceiver(mUserPresentReceiver, userPresent);
mHandler.postDelayed(runDisableKeyguard, 300);
}
}
}
private final BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_USER_PRESENT.equals(intent.getAction())){
if (sp_store.getBoolean(KEY_DISABLE_LOCKING, false))
setEnablednessOfKeyguard(false);
}
}
};