Flutter，Dart，FireBase：[错误：颤振/lib/ui/ui_dart_state.cc（199）） - 无效的TAP异常

Question

I am getting the following error when I run my app.

[ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Invalid argument(s)

Exception caught by gesture Invalid argument(s)

Code

onTap: () async {
                                  var userDetail = await FirebaseFirestore
                                      .instance
                                      .collection("Users")
                                      .doc(
                                          FirebaseAuth.instance.currentUser.uid)
                                      .get();
                                  final pID =
                                      userDetail.data()['ID'];

                                  final pName = userDetail.data()['Name'];
                                  var dName = snapshot.data.docs[index]
                                      .data()['Doc Name'];
                                  var dID = snapshot.data.docs[index]
                                      .data()['DocID'];
                                  var dcoumentID=
                                      pID + pName + dName + dID;
                                  Navigator.push(
                                    context,
                                    MaterialPageRoute(builder: (context) {
                                      return Screen1(
                                          doctor:
                                              snapshot.data.docs[index].data(),
                                          doctumentID:
                                              dcoumentID);
                                    }),
                                  );
                                },

This code works in the rest of the application only this part is throwing the error.

What am I doing wrong?

Answer 1

The mistake was in one of the fields I am trying to access, I did not add space. Always check if you typed a field's name correctly, and a collection name correctly. Thank you.

onTap: () async {
                                  var userDetail = await FirebaseFirestore
                                      .instance
                                      .collection("Users")
                                      .doc(
                                          FirebaseAuth.instance.currentUser.uid)
                                      .get();
                                  final pID =userDetail.data()['ID'];
    
                                      final pName = userDetail.data()['Name'];
                                      var dName = snapshot.data.docs[index]
                                          .data()['Doc Name'];
                                      var dID = snapshot.data.docs[index]
                                          .data()['Doc ID']; //changed field name
                                      var dcoumentID=
                                          pID + pName + dName + dID;
                                      Navigator.push(
                                        context,
                                        MaterialPageRoute(builder: (context) {
                                          return Screen1(
                                              doctor:
                                                  snapshot.data.docs[index].data(),
                                              doctumentID:
                                                  dcoumentID);
                                        }),
                                      );
                                    },