I'm using app navigation but I'm facing a problem that I can't put the if (initialLink != null)... code in a separate method so that I can then duplicate this method in different parts of the code, can you tell me how can I put this code in a separate method?

class AppRouter {
  final BuildContext context;
  AppRouter(this.context);

  RouteMap buildRouteMap(PendingDynamicLinkData? initialLink) {
    return RouteMap(
      onUnknownRoute: (route) => const Redirect('/'),
      routes: {
        '/': (route) {
          bool loggedIn =
              Provider.of<AppState>(context, listen: false).isLoggedIn;

          if (initialLink != null) {
            String code;
            final Uri deepLink = initialLink.link;
            final String deeplinkString = deepLink.toString();
            code = deepLink.queryParameters['code'] ?? 'No code';
            var start = deeplinkString.lastIndexOf('/')   1;
            var end = deeplinkString.indexOf('?');
            var extract = deeplinkString.substring(start, end);
            if (extract == 'password-reset') {
              return Redirect(
                '/login/forgot-password',
                queryParameters: {
                  'isSendEmail': 'true',
                  'code': code,
                },
              );
            } 
          }
   
          return const MaterialPage(
            child: PhoneNumberPage(),
          );
        },

        '/map': (route) {
          bool loggedIn =
              Provider.of<AppState>(context, listen: false).isLoggedIn;
          if (loggedIn) {
            return const Redirect('/home');
          }

          return const MaterialPage(
            child: MapPage(
              isUserAuth: false,
            ),
          );
        },

code to be placed in a separate function

if (initialLink != null) {
                String code;
                final Uri deepLink = initialLink.link;
                final String deeplinkString = deepLink.toString();
                code = deepLink.queryParameters['code'] ?? 'No code';
                var start = deeplinkString.lastIndexOf('/')   1;
                var end = deeplinkString.indexOf('?');
                var extract = deeplinkString.substring(start, end);
                if (extract == 'password-reset') {
                  return Redirect(
                    '/login/forgot-password',
                    queryParameters: {
                      'isSendEmail': 'true',
                      'code': code,
                    },
                  );
                } 
              }

CodePudding user response：

try this.

void commonFunction(){
  if (initialLink != null) {
    String code;
    final Uri deepLink = initialLink.link;
    final String deeplinkString = deepLink.toString();
    code = deepLink.queryParameters['code'] ?? 'No code';
    var start = deeplinkString.lastIndexOf('/')   1;
    var end = deeplinkString.indexOf('?');
    var extract = deeplinkString.substring(start, end);
    if (extract == 'password-reset') {
      return Redirect(
        '/login/forgot-password',
        queryParameters: {
          'isSendEmail': 'true',
          'code': code,
        },
      );
    }
  }
}

then call commonFunction() every where you need.

CodePudding user response：

You use initialLink as the judgement of if..else condition. When you extract them you need to provide that parameter. Otherwise the code cannot find initialLink.

void commonFunction(PendingDynamicLinkData? initialLink){
  if (initialLink != null) {
    String code;
    final Uri deepLink = initialLink.link;
    final String deeplinkString = deepLink.toString();
    code = deepLink.queryParameters['code'] ?? 'No code';
    var start = deeplinkString.lastIndexOf('/')   1;
    var end = deeplinkString.indexOf('?');
    var extract = deeplinkString.substring(start, end);
    if (extract == 'password-reset') {
      return Redirect(
        '/login/forgot-password',
        queryParameters: {
          'isSendEmail': 'true',
          'code': code,
        },
      );
    }
  }
}