Flutter ScaffoldMessenger 在等待键下方不起作用

发布于08月14日

My code details
I tried to initialise the scaffold message. It works normally, but the problem is below the "await" key; it's not working. If you find it, explain why this is not working and how I can fix it.

                          onTap: () async {
                              if (formKey.currentState!.validate()) {
                                try {
                                  final navigator = Navigator.of(context);
                                  final scaffoldMessenger =
                                      ScaffoldMessenger.of(context);
                                  ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                                    content:
                                        Text("responseMessage!.message.toString()"),
                                  )); //This ScaffoldMessenger is working
                                  UserDetails userDetailsSend = UserDetails(
                                      name: name.text,
                                      email: email.text,
                                      phoneNumber: int.parse(phone.text));
        
                                  responseMessage =
                                      await UserData().register(userDetailsSend);
        
                                  if (responseMessage!.status == 201) {
                                    navigator.push(
                                      MaterialPageRoute(
                                        builder: (context) => OTPVerificationScreen(),
                                      ),
                                    );
                                  } else {
                                    scaffoldMessenger.showSnackBar(SnackBar(
                                      content:
                                          Text(responseMessage!.message.toString()),
                                    )); // scaffold is not working
                                  }
                                } catch (e) {
                                  debugPrint(e.toString());
                                }
                              }
                            }

The first ScaffoldMessenger is working, but the second scaffoldMessenger is not working. How do I fix it?个

onTap: () async { if (formKey.currentState!.validate()) { try { final navigator = Navigator.of(context); // Show the first SnackBar ScaffoldMessenger.of(context).showSnackBar( SnackBar( content: Text("responseMessage!.message.toString()"), ), ); UserDetails userDetailsSend = UserDetails( name: name.text, email: email.text, phoneNumber: int.parse(phone.text), ); responseMessage = await UserData().register(userDetailsSend); // Delay a bit before showing the second SnackBar Future.delayed(Duration(milliseconds: 500), () { final scaffoldMessenger = ScaffoldMessenger.of(context); if (responseMessage!.status == 201) { navigator.push( MaterialPageRoute( builder: (context) => OTPVerificationScreen(), ), ); } else { scaffoldMessenger.showSnackBar( SnackBar( content: Text(responseMessage!.message.toString()), ), ); } }); } catch (e) { debugPrint(e.toString()); } } }

Flutter ScaffoldMessenger 在等待键下方不起作用

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