override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        return inflater.inflate(R.layout.fragment_home, container, false)
    }
    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        val mScanner = IntentIntegrator(activity)
        mScanner.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE)
        mScanner.setBeepEnabled(true)
        mScanner.initiateScan()

    }
    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        val result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data)
        if (result != null) {
            if (result.contents == null) {
                Toast.makeText(activity, "Cancelled", Toast.LENGTH_LONG).show()
            } else {
                Toast.makeText(activity, "Scanned: " + result.contents, Toast.LENGTH_LONG).show()
            }
        } else {
            super.onActivityResult(requestCode, resultCode, data)
        }
    }
}

I want to get response in a toast but when I tried to use debugger I am unable to go to onActivityResult() and the camera closes quickly.