Back Pressed

[vitormesquita]

When click on android button back de scanner restart. And the camera doesn't appears and it got the black screen.

If I click many times on the button this error happens :

java.lang.RuntimeException: Unable to destroy activity {br.com.beerplusapp.debug/com.edwardvanraak.materialbarcodescanner.MaterialBarcodeScannerActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.vision.Detector.release()' on a null object reference

[EdwardvanRaak]

Does this happen to you with the example project? You can download the apk here: a.pomf.cat/ikbvco.apk