research_package 0.7.2+1

A Flutter framework for obtaining informed consent, showing surveys and collecting results.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:research_package/research_package.dart';

import 'informed_consent_page.dart';
import 'linear_survey_page.dart';
import 'navigable_survey_page.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      supportedLocales: [
        Locale('en'),
        Locale('da'),
        Locale('fr'),
      ],
      localizationsDelegates: [
        // Research Package translations - supports translation of both the
        // RP-specific text as well as app-specific text.
        //  - translations of the RP text is part of the RP Flutter package
        //  - the translations of app text is located in the 'assets/lang/' folder
        //  - the translations of informed consent and surveys are part of the
        //    app text and also included in the the 'assets/lang/' files
        //  - note that only some text is translated -- illustrates that RP
        //    works both with and without tranlation.
        RPLocalizations.delegate,

        // // Research Package translations - supports translation of both;
        // //  - the RP-specific text
        // //  - app-specific text using the [AssetLocalizationLoader]
        // //  - a map-based localization loader [MapLocalizationLoader]
        // RPLocalizationsDelegate(loaders: [
        //   AssetLocalizationLoader(),
        //   MapLocalizationLoader({
        //     'en': {'app_name': 'Research Package Demo'},
        //     'da': {'app_name': 'Research Package Demonstration'},
        //     'fr': {'app_name': 'Démonstration de Research Package'},
        //   }),
        // ]),

        // Built-in localization of basic text for Cupertino widgets
        GlobalCupertinoLocalizations.delegate,
        // Built-in localization of basic text for Material widgets
        GlobalMaterialLocalizations.delegate,
        // Built-in localization for text direction LTR/RTL
        GlobalWidgetsLocalizations.delegate,
      ],
      // Returns a locale which will be used by the app
      localeResolutionCallback: (locale, supportedLocales) {
        // Check if the current device locale is supported
        for (var supportedLocale in supportedLocales) {
          if (supportedLocale.languageCode == locale!.languageCode) {
            return supportedLocale;
          }
        }
        // if the locale of the device is not supported, use the first one
        // from the list (English, in this case).
        return supportedLocales.first;
      },
      theme: ThemeData.light(),
      darkTheme: ThemeData.dark(),
      title: 'Research Package Demo',
      home: MyHomePage(),
      debugShowCheckedModeBanner: false,
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    RPLocalizations locale = RPLocalizations.of(context)!;

    return Scaffold(
      appBar: AppBar(
        title: Text(locale.translate('app_name')),
      ),
      body: Container(
        padding: EdgeInsets.all(8),
        child: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: <Widget>[
              Padding(
                padding:
                    const EdgeInsets.symmetric(vertical: 50, horizontal: 8),
                child: Text(
                  locale.translate("app_info"),
                  textAlign: TextAlign.center,
                  style: TextStyle(fontSize: 18),
                ),
              ),
              Padding(
                padding: const EdgeInsets.all(8.0),
                child: TextButton(
                  child: Text(
                    locale.translate("informed_consent"),
                    style: TextStyle(fontSize: 18),
                  ),
                  onPressed: () {
                    Navigator.of(context).push(MaterialPageRoute(
                        builder: (context) => InformedConsentPage()));
                  },
                ),
              ),
              Padding(
                padding: const EdgeInsets.all(8.0),
                child: TextButton(
                  child: Text(
                    locale.translate("linear_survey"),
                    style: TextStyle(fontSize: 18),
                  ),
                  onPressed: () {
                    Navigator.of(context).push(MaterialPageRoute(
                        builder: (context) => LinearSurveyPage()));
                  },
                ),
              ),
              Padding(
                padding: const EdgeInsets.all(8.0),
                child: TextButton(
                  child: Text(
                    locale.translate("branching_survey"),
                    style: TextStyle(fontSize: 18),
                  ),
                  onPressed: () {
                    Navigator.of(context).push(MaterialPageRoute(
                        builder: (context) => NavigableSurveyPage()));
                  },
                ),
              ),
            ],
          ),
        ),
      ),
      bottomNavigationBar: SafeArea(
          child: Padding(
        padding: const EdgeInsets.all(22.0),
        child: Image.asset(
          "assets/images/cachet.png",
          height: 40,
        ),
      )),
    );
  }
}