Widget build()

in packages/url_launcher/url_launcher/example/lib/main.dart [133:231]
97 lines of code
3 McCabe index (conditional complexity)

  Widget build(BuildContext context) {
    // onPressed calls using this URL are not gated on a 'canLaunch' check
    // because the assumption is that every device can launch a web URL.
    const String toLaunch = 'https://www.cylog.org/headers/';
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: ListView(
        children: <Widget>[
          Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Padding(
                padding: const EdgeInsets.all(16.0),
                child: TextField(
                    onChanged: (String text) => _phone = text,
                    decoration: const InputDecoration(
                        hintText: 'Input the phone number to launch')),
              ),
              ElevatedButton(
                onPressed: _hasCallSupport
                    ? () => setState(() {
                          _launched = _makePhoneCall(_phone);
                        })
                    : null,
                child: _hasCallSupport
                    ? const Text('Make phone call')
                    : const Text('Calling not supported'),
              ),
              const Padding(
                padding: EdgeInsets.all(16.0),
                child: Text(toLaunch),
              ),
              ElevatedButton(
                onPressed: () => setState(() {
                  _launched = _launchInBrowser(toLaunch);
                }),
                child: const Text('Launch in browser'),
              ),
              const Padding(padding: EdgeInsets.all(16.0)),
              ElevatedButton(
                onPressed: () => setState(() {
                  _launched = _launchInWebViewOrVC(toLaunch);
                }),
                child: const Text('Launch in app'),
              ),
              ElevatedButton(
                onPressed: () => setState(() {
                  _launched = _launchInWebViewWithJavaScript(toLaunch);
                }),
                child: const Text('Launch in app(JavaScript ON)'),
              ),
              ElevatedButton(
                onPressed: () => setState(() {
                  _launched = _launchInWebViewWithDomStorage(toLaunch);
                }),
                child: const Text('Launch in app(DOM storage ON)'),
              ),
              const Padding(padding: EdgeInsets.all(16.0)),
              ElevatedButton(
                onPressed: () => setState(() {
                  _launched = _launchUniversalLinkIos(toLaunch);
                }),
                child: const Text(
                    'Launch a universal link in a native app, fallback to Safari.(Youtube)'),
              ),
              const Padding(padding: EdgeInsets.all(16.0)),
              ElevatedButton(
                onPressed: () => setState(() {
                  _launched = _launchInWebViewOrVC(toLaunch);
                  Timer(const Duration(seconds: 5), () {
                    print('Closing WebView after 5 seconds...');
                    closeWebView();
                  });
                }),
                child: const Text('Launch in app + close after 5 seconds'),
              ),
              const Padding(padding: EdgeInsets.all(16.0)),
              Link(
                uri: Uri.parse(
                    'https://pub.dev/documentation/url_launcher/latest/link/link-library.html'),
                target: LinkTarget.blank,
                builder: (BuildContext ctx, FollowLink? openLink) {
                  return TextButton.icon(
                    onPressed: openLink,
                    label: const Text('Link Widget documentation'),
                    icon: const Icon(Icons.read_more),
                  );
                },
              ),
              const Padding(padding: EdgeInsets.all(16.0)),
              FutureBuilder<void>(future: _launched, builder: _launchStatus),
            ],
          ),
        ],
      ),
    );
  }