How to check the current state of a SwitchPreference?

I have a SwitchPreferenceCompat and I want to say if Switch preference is enabled show Toast(switch preference is enabled) else it disables again shows a Toast(switch preference is disabled) There were some questions like this but none of them worked for me.

Here is XML:

<PreferenceCategory app:title="عممومی">

    <Preference
        app:key="backUp"
        app:title="بشتیبان گیری آفلاین از اطلاعات" />
     

      <SwitchPreferenceCompat
        app:key="vibrate"
        app:defaultValue="true"
        app:summary="لرزش هنگام انتخاب یک آیتم"
        app:title="لرزش" />

</PreferenceCategory>

And Setting Fragment:

class SettingsFragment : PreferenceFragmentCompat() {

    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
        setPreferencesFromResource(R.xml.root_preferences, rootKey)
    }
}

Related question

myPref!!.onPreferenceClickListener =
    Preference.OnPreferenceClickListener {
        Toast.makeText(activity, "WORK", Toast.LENGTH_SHORT).show()
        true
    }

You need to replace onPreferenceClickListener by onPreferenceChangeListener

override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {

    val myPref = findPreference<SwitchPreferenceCompat>("vibrate")

    myPref?.onPreferenceChangeListener =
       // The callback is triggered whenever the switch preference is changed
        Preference.OnPreferenceChangeListener { pref, newValue ->

            if (pref is SwitchPreferenceCompat) {
                val value = newValue as Boolean
                if (value) Toast.makeText(requireContext(), "WORK", Toast.LENGTH_SHORT)
                    .show()
                else Toast.makeText(requireContext(), "OFF", Toast.LENGTH_SHORT).show()
            }
            true
        }
}