Preferences.java 文件源码

private void update_nfc_expiry_preferences(Boolean show_age) {
    try {
        ;
        final PreferenceScreen nfcScreen = (PreferenceScreen) findPreference("xdrip_plus_nfc_settings");
        final String nfc_expiry_days_string = AllPrefsFragment.this.prefs.getString("nfc_expiry_days", "14.5");

        final CheckBoxPreference nfc_show_age = (CheckBoxPreference) findPreference("nfc_show_age");
        nfc_show_age.setSummaryOff("Show the sensor expiry time based on " + nfc_expiry_days_string + " days");
        if (show_age == null) show_age = nfc_show_age.isChecked();
        if (show_age) {
            nfcScreen.removePreference(nfc_expiry_days);
        } else {
            nfc_expiry_days.setOrder(3);
            nfcScreen.addPreference(nfc_expiry_days);
        }
    } catch (NullPointerException e) {
        //
    }
}