prefsFunction.kt

companion object {

        private fun bindPreferenceSummaryToValue(preference: Preference) {
            preference.onPreferenceChangeListener = sBindPreferenceSummaryToValueListener
            val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(preference.context)

            if (preference is CheckBoxPreference) {

                sBindPreferenceSummaryToValueListener.onPreferenceChange(
                    preference,
                    sharedPreferences
                        .getBoolean(preference.key, false)
                )
                println(sharedPreferences.getBoolean(preference.key, false))

            } else if (preference is EditTextPreference){
                sBindPreferenceSummaryToValueListener.onPreferenceChange(
                    preference,
                    sharedPreferences
                        .getString(preference.key, "")
                )
                println(sharedPreferences.getString(preference.key, ""))
//                editor.putString(preference.key, preference.text)
            }

//            editor.apply()
        }

        private val sBindPreferenceSummaryToValueListener = Preference.OnPreferenceChangeListener { preference, newValue ->
            val stringValue = newValue.toString()

            val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(preference.context)
            val editor = sharedPreferences.edit()


            if (preference is ListPreference) {
                // For list preferences, look up the correct display value in
                // the preference's 'entries' list.
                val index = preference.findIndexOfValue(stringValue)

                // Set the summary to reflect the new value.
                preference.value =
                    if (index >= 0)
                        preference.entries[index] as String?
                    else
                        null

            } else if (preference is EditTextPreference) {
                if (preference.getKey() == "signature") {
                    // update the changed gallery name to summary filed
                    preference.summaryProvider = null
                    preference.text = stringValue
                }
            } else if (preference is CheckBoxPreference) {
                preference.isChecked = stringValue == "true"
                println("STRINGVALUE $stringValue")
                println("PREFERENCE: ${preference.isChecked}")
                editor.putBoolean(preference.key, preference.isChecked)
                editor.apply()
                println(sharedPreferences.getBoolean(preference.key, false))
            } else if (preference is SwitchPreferenceCompat) {
                preference.isChecked = stringValue == "true"
                editor.putBoolean(preference.key, preference.isChecked)
                editor.apply()
            }
            else {
                preference.summary = stringValue
            }
            true
        }
    }