renew_PreferenceFragmentCompat.kt

class SettingFragment : PreferenceFragmentCompat() {
    companion object {
        fun newInstance(rootKey: String?): SettingFragment = SettingFragment().apply {
           arguments = Bundle().apply {
               putString(PreferenceFragmentCompat.ARG_PREFERENCE_ROOT, rootKey)
           }
        }
    }

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

}

class SettingActivity: AppCompatActivity(), PreferenceFragmentCompat.OnPreferenceStartScreenCallback {
    override fun onPreferenceStartScreen(fragment: PreferenceFragmentCompat, screenPreference: ScreenPreference) : Boolean = true.apply {
        supportFragmentManager.beginTransaction().replace(R.id.container, SettingFragment.newInstance(screenPreference.key).addToBackStack(null).commit()
    }
}

reuse_PreferenceFragmentCompat.kt

class SettingFragment : PreferenceFragmentCompat() {
    private val stack: Stack<String?> = Stack()

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

    override fun onNavigateToScreen(preferenceScreen: PreferenceScreen) {
        stack.push(this.preferenceScreen.key)
        setPreferencesFromResource(R.xml.setting, preferenceScreen.key)
    }

    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        view?.isFocusableInTouchMode = true
        view?.requestFocus()
        view?.setOnKeyListener { view, action, event ->
            ((action == KeyEvent.KEYCODE_BACK) and stack.isNotEmpty()).apply {
                if (this) {
                    setPreferencesFromResource(R.xml.setting, stack.pop())
                }
            }
        }
    }
}