disableKeyguard call on application freezes phone

On an Android 6.0 project, I am trying to unlock the phone using the proximity sensor.

This what I have for OnSensorChanged event:

    public void onSensorChanged(SensorEvent event) {
            proxValue = (event.values[0]); //sensor value stored in proxValue
            keyguardManager = (KeyguardManager)getSystemService(Activity.KEYGUARD_SERVICE);
            lock = keyguardManager.newKeyguardLock(KEYGUARD_SERVICE);
            screenLock = ((PowerManager)getSystemService(POWER_SERVICE)).newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "TAG");
    /*when service is running and phone is locked
     and proximity sensor value is less than 2.0 centimeters*/
            if(isMyServiceRunning(StartStopService.class) && lockStatus == true && proxValue < 2){
                Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
                v.vibrate(500); // vibrate for 500 ms 
                screenLock.acquire(); //to wake the phone up
                lock.disableKeyguard(); //to unlock the phone
                keyguardDisabled = true; // boolean to check keyguard status

            }
        }

On my ScreenReceiver I have:

public class ScreenReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            keyguardManager = (KeyguardManager)getSystemService(Activity.KEYGUARD_SERVICE);
            lock = keyguardManager.newKeyguardLock(KEYGUARD_SERVICE);
            screenLock = ((PowerManager)getSystemService(POWER_SERVICE)).newWakeLock(
                    PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "TAG");
            if((intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) || !(intent.getAction().equals(Intent.ACTION_USER_PRESENT)))
            {
                lockStatus = true;
                if(keyguardDisabled){
                    lock.reenableKeyguard();
                    screenLock.release();
                    keyguardDisabled = false;

                }
            }
            else
            {
                lockStatus = false;
            }
        }
    }

The problem occurs when I call lock.disableKeyguard(). It unlocks and wakes up the phone successfully but phone freezes when I press the home button. I know I need to re-enable the keyguard at some point but where? What could be the solution or is there any other way to unlock the phone programmatically?

In case anyone experiences the same problem, I solved it by creating an activity and on onCreate method I added:

//StartStopActivity
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | 
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | 
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | 
WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON);

On my service I started the activity like this:

//StartStopService
Intent dialogIntent = new Intent(this, StartStopActivity.class);
                dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                startActivity(dialogIntent);

Old method does not work for Marshmallow and is deprecated.