如何将contentDescription赋予SwitchPreference以实现可访问性/对讲？

<SwitchPreference
    android:key="switch_preference"
    android:title="Switch Preference"
    android:summary="This is a switch preference"
    android:contentDescription="Switch preference is currently [status]"
    android:defaultValue="false" />

SwitchPreference switchPreference = (SwitchPreference) findPreference("switch_preference");
switchPreference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
    @Override
    public boolean onPreferenceChange(Preference preference, Object newValue) {
        boolean isChecked = (boolean) newValue;
        String status = isChecked ? "开启" : "关闭";
        switchPreference.setContentDescription("Switch preference is currently " + status);
        return true;
    }
});