如何風格化在調用函數後出現的進度指示器？

羅澤羅

是否可以為該功能應用主題？這個想法是對加載許可證時出現的圓形進度指示器顏色進行風格化。

OutlinedButton(
    onPressed: () {
        showLicensePage( // how to apply theme to this function?
          context: context,
          applicationIcon: const MyAppIcon(48),
        );
    },
    child: Text(
        AppLocalizations.key(context, 'licenses'),
    ),
),

侯賽因·優素菲

該showLicensePage功能實際上只是一個簡單的Navigator.push.

void showLicensePage({
  required BuildContext context,
  String? applicationName,
  String? applicationVersion,
  Widget? applicationIcon,
  String? applicationLegalese,
  bool useRootNavigator = false,
}) {
  assert(context != null);
  assert(useRootNavigator != null);
  Navigator.of(context, rootNavigator: useRootNavigator).push(MaterialPageRoute<void>(
    builder: (BuildContext context) => LicensePage(
      applicationName: applicationName,
      applicationVersion: applicationVersion,
      applicationIcon: applicationIcon,
      applicationLegalese: applicationLegalese,
    ),
  ));
}

您可以創建自己的showLicensePageWithTheme，LicensePage用Theme小部件包裝的地方：

void showLicensePageWithTheme({
  required BuildContext context,
  required ThemeData theme,
  String? applicationName,
  String? applicationVersion,
  Widget? applicationIcon,
  String? applicationLegalese,
  bool useRootNavigator = false,
}) {
  assert(context != null);
  assert(useRootNavigator != null);
  Navigator.of(context, rootNavigator: useRootNavigator)
      .push(MaterialPageRoute<void>(
    builder: (BuildContext context) => Theme(
      data: theme,
      child: LicensePage(
        applicationName: applicationName,
        applicationVersion: applicationVersion,
        applicationIcon: applicationIcon,
        applicationLegalese: applicationLegalese,
      ),
    ),
  ));
}