new intent kiosk mode + long home button press + zxing android

I have a running app in kiosMode and i can make an intent but when the new app starts if i long press home button i can exit kioskMode. Any idea how i can cancel that?

Also on the kioskActivity i cannot @Override onActivityResult, the activity extends to Activity.

Also not being able to integrate zxing library to android studio, app sends error on
compile 'com.journeyapps:zxing-android-integration:2.0.1@aar'

Can anyone help on any of these please? Tank you.