public void clearLogin() { final DataMgr dataMgr = DataMgr.getInstance(); dataMgr.removeSettingByName(Setting.SETTING_AUTH); dataMgr.removeSettingByName(Setting.SETTING_IS_CLIENT_LOGIN); dataMgr.removeSettingByName(Setting.SETTING_USERNAME); dataMgr.removeSettingByName(Setting.SETTING_PASSWORD); }