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Error: Expected an identifier, but got ')'

Time:01-01

I got this error in debug console:

Launching lib\main.dart on Chrome in debug mode... lib\main.dart:1 Error: Expected an identifier, but got ')'. lib/apilar_codigo/stacked_all.dart:20 Try inserting an identifier before ')'. StartPomodoro(end: ),

Failed to compile application. Exited (sigterm)

How can I solved it?

This is my code:

startPomodoro.dart



class StartPomodoro extends StatefulWidget {
   StartPomodoro({super.key, required this.end});

  final DateTime end;

  @override
  State<StartPomodoro> createState() => _StartPomodoroState();
}

class _StartPomodoroState extends State<StartPomodoro>
    with TickerProviderStateMixin {
  final now = DateTime.now();

  List<bool> isSelected = [true, false];
  late Timer timer;
  late AnimationController controller;

  String get countText {
    Duration count = controller.duration! * controller.value;
    return controller.isDismissed
        ? '${controller.duration!.inHours.toString().padLeft(2, '0')}:${(controller.duration!.inMinutes % 60).toString().padLeft(2, '0')}:${(controller.duration!.inSeconds % 60).toString().padLeft(2, '0')}'
        : '${count.inHours.toString().padLeft(2, '0')}:${(count.inMinutes % 60).toString().padLeft(2, '0')}:${(count.inSeconds % 60).toString().padLeft(2, '0')}';
  }

  double progress = 1.0;
  bool LongBreak = true;

  void notify() {
    if (countText == '00:00:00') {}
  }

  @override
  void initState() {
    super.initState();
    controller = AnimationController(
      vsync: this,
      duration: const Duration(seconds: 0),
    );
    controller.addListener(() {
      notify();
      if (controller.isAnimating) {
        setState(() {
          progress = controller.value;
        });
      } else {
        setState(() {
          progress = 1.0;
          LongBreak = true;
        });
      }
    });
  }

  @override
  void dispose() {
    controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Scaffold(
        backgroundColor:
            LongBreak ? const Color(0xffD94530) : const Color(0xff6351c5),
        body: SizedBox(
          height: 460,
          child: Stack(
            children: [
              Positioned(
                top: 220,
                left: 16,
                child: GestureDetector(
                  onTap: () {
                    if (controller.isDismissed) {
                      showModalBottomSheet(
                        context: context,
                        builder: (context) => Container(
                          height: 300,
                          child: CupertinoTimerPicker(
                            initialTimerDuration: controller.duration!,
                            onTimerDurationChanged: (time) {
                              setState(() {
                                controller.duration = time;
                              });
                            },
                          ),
                        ),
                      );
                    }
                  },
                  child: AnimatedBuilder(
                      animation: controller,
                      builder: (context, child) {
                        return Stack(
                          children: <Widget>[
                            Align(
                              alignment: Alignment.bottomCenter,
                              child: Container(
                                color: const Color(0xffD94530),
                                height: controller.value *
                                    MediaQuery.of(context).size.height,
                              ),
                            ),
                            Padding(
                              padding: const EdgeInsets.all(8.0),
                              child: Column(
                                mainAxisAlignment:
                                    MainAxisAlignment.spaceAround,
                                children: <Widget>[
                                  Expanded(
                                    child: Align(
                                      alignment: Alignment.center,
                                      child: Align(
                                        alignment: FractionalOffset.center,
                                        child: Container(
                                          width: MediaQuery.of(context)
                                                  .size
                                                  .width -
                                              64,
                                          height: 210,
                                          decoration: const BoxDecoration(
                                            color: Color.fromARGB(
                                                255, 245, 245, 245),
                                            boxShadow: [
                                              BoxShadow(
                                                color: Color(0x22000000),
                                                blurRadius: 64,
                                                blurStyle: BlurStyle.outer,
                                                offset: Offset(0, 16),
                                              ),
                                            ],
                                          ),
                                          child: Container(
                                            padding: const EdgeInsets.all(24.0),
                                            child: SingleChildScrollView(
                                              child: Column(
                                                crossAxisAlignment:
                                                    CrossAxisAlignment.start,
                                                children: [
                                                  const Text(
                                                    "Hyper focused on...",
                                                    style: TextStyle(
                                                      fontSize: 22.0,
                                                      fontWeight:
                                                          FontWeight.w600,
                                                    ),
                                                  ),
                                                  const SizedBox(height: 16),
                                                  Center(
                                                    child: Column(
                                                      mainAxisAlignment:
                                                          MainAxisAlignment
                                                              .center,
                                                      children: [
                                                        Row(
                                                          mainAxisAlignment:
                                                              MainAxisAlignment
                                                                  .center,
                                                          children: [
                                                            Text(
                                                              countText,
                                                              style:
                                                                  const TextStyle(
                                                                letterSpacing:
                                                                    4,
                                                                fontSize: 65.0,
                                                                color: Color(
                                                                    0xff3B3B3B),
                                                              ),
                                                            ),
                                                          ],
                                                        ),
                                                        Row(
                                                          mainAxisAlignment:
                                                              MainAxisAlignment
                                                                  .center,
                                                          children: const [
                                                            Text(
                                                              '    Hours     Minutes     Seconds    ',
                                                              style: TextStyle(
                                                                letterSpacing:
                                                                    2,
                                                                fontSize: 20.0,
                                                                color: Color(
                                                                    0xff3B3B3B),
                                                              ),
                                                            ),
                                                          ],
                                                        ),
                                                      ],
                                                    ),
                                                  ),
                                                ],
                                              ),
                                            ),
                                          ),
                                        ),
                                      ),
                                    ),
                                  ),
                                ],
                              ),
                            ),
                          ],
                        );
                      }),
                ),
              ),
              Expanded(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: [
                    AnimatedBuilder(
                        animation: controller,
                        builder: (context, child) {
                          return const Padding(
                            padding: EdgeInsets.symmetric(
                                vertical: 2.0, horizontal: 15.0),
                          );
                        }),
                    AnimatedBuilder(
                        animation: controller,
                        builder: (context, child) {
                          return Padding(
                            padding: const EdgeInsets.symmetric(
                                vertical: 2.0, horizontal: 15.0),
                            child: FloatingActionButton.extended(
                                backgroundColor: const Color(0xffFAFAFA),
                                onPressed: () {
                                  if (controller.isAnimating) {
                                    controller.stop();
                                    setState(() {
                                      LongBreak = false;
                                    });
                                  } else {
                                    controller.reverse(
                                        from: controller.value == 0
                                            ? 1.0
                                            : controller.value);
                                    setState(() {
                                      LongBreak = false;
                                    });
                                  }
                                },
                                icon: Icon(
                                  controller.isAnimating
                                      ? Icons.pause
                                      : Icons.play_arrow,
                                  color: const Color(0xff3B3B3B),
                                ),
                                label: Text(
                                  controller.isAnimating ? "Pause" : "Start",
                                  style:
                                      const TextStyle(color: Color(0xff3B3B3B)),
                                )),
                          );
                        }),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  AnimationController _buildClockAnimation(TickerProvider tickerProvider) {
    return AnimationController(
      vsync: tickerProvider,
      duration: const Duration(milliseconds: 750),
    );
  }

  void _animateLeftDigit(
    int prev,
    int current,
    AnimationController controller,
  ) {
    final prevFirstDigit = (prev / 10).floor();
    final currentFirstDigit = (current / 10).floor();
    if (prevFirstDigit != currentFirstDigit) {
      controller.forward();
    }
  }
}

StackPages.dart



class StackPages extends StatelessWidget {
  const StackPages({super.key});

  @override
  Widget build(BuildContext context) {
    return Stack(
      // ignore: prefer_const_literals_to_create_immutables
      children:   [
      // ChartBar()
       // PieChartSample1(),
       // ToDoPage(),
         StartPomodoro(end: ),
        // HomePageTimerUI(),
       
          
      ],
    );
  }
}

How to get rid of this problem? I tried this but no luck:

 StartPomodoro(end: end),

Thank you for any help you can offer

CodePudding user response:

  • Parameter end is of type DateTime.

  • To get over this error provide value of type DateTime in end parameter.

    Try following code:

    StartPomodoro(end: DateTime.now().add(const Duration(days: 1)))
    
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