Error when "Navigator.pop(context);" execute-CodePudding

I builded a flutter app that navigating between two pages and it's working but after a while on pressing the image that run the pop code I am getting this error:


════════ Exception caught by gesture ═══════════════════════════════════════════
The following RangeError was thrown while handling a gesture:
RangeError (index): Invalid value: Only valid value is 0: -1

When the exception was thrown, this was the stack
#0      List.[] (dart:core-patch/growable_array.dart:260:36)
#1      NavigatorState.didStartUserGesture
package:flutter/…/widgets/navigator.dart:4982
#2      new _CupertinoBackGestureController
package:flutter/…/cupertino/route.dart:714
#3      CupertinoRouteTransitionMixin._startPopGesture
package:flutter/…/cupertino/route.dart:231
#4      CupertinoRouteTransitionMixin.buildPageTransitions.<anonymous closure>
package:flutter/…/cupertino/route.dart:278
#5      _CupertinoBackGestureDetectorState._handleDragStart
package:flutter/…/cupertino/route.dart:627
#6      DragGestureRecognizer._checkStart.<anonymous closure>
package:flutter/…/gestures/monodrag.dart:429
#7      GestureRecognizer.invokeCallback
package:flutter/…/gestures/recognizer.dart:198
#8      DragGestureRecognizer._checkStart
package:flutter/…/gestures/monodrag.dart:429
#9      DragGestureRecognizer.acceptGesture
package:flutter/…/gestures/monodrag.dart:349
#10     GestureArenaManager._resolveByDefault
package:flutter/…/gestures/arena.dart:251
#11     GestureArenaManager._tryToResolveArena.<anonymous closure>
package:flutter/…/gestures/arena.dart:232
(elided 10 frames from dart:async)
Handler: "onStart"
Recognizer: HorizontalDragGestureRecognizer#4d4ab
    debugOwner: _CupertinoBackGestureDetectorState<dynamic>#dadf1
    start behavior: start
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by gesture ═══════════════════════════════════════════
'package:flutter/src/cupertino/route.dart': Failed assertion: line 632 pos 12: '_backGestureController != null': is not true.
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by gesture ═══════════════════════════════════════════
'package:flutter/src/cupertino/route.dart': Failed assertion: line 638 pos 12: '_backGestureController != null': is not true.
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by gesture ═══════════════════════════════════════════
Bad state: No element
════════════════════════════════════════════════════════════════════════════════

and this is my code that navigate from page one to page two

Center(
                    child: Padding(
                      padding: EdgeInsets.only(top: size.width * .045),
                      child: Row(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          Text(
                            "Don’t have an account?",
                            style: TextStyle(
                              color: headText,
                              fontSize: size.width * .034,
                              fontWeight: FontWeight.w300,
                            ),
                          ),
                          SizedBox(width: size.width * .010),
                          GestureDetector(
                            onTap: () {
                              Navigator.push(
                                context,
                                MaterialPageRoute(
                                  builder: (context) =>
                                      const CreateAccountPage(),
                                ),
                              );
                            },
                            child: Text(
                              "Create one",
                              style: TextStyle(
                                color: Color(0xFF0B8AFF),
                                fontSize: size.width * .034,
                                fontWeight: FontWeight.w300,
                              ),
                            ),
                          ),
                        ],
                      ),
                    ),
                  ),

and this is the code that navigate back to page one

GestureDetector(
                        onTap: () {
                          Navigator.pop(context);
                        },
                        child: Padding(
                          padding: EdgeInsets.only(
                            top: size.width * .010,
                            left: size.width * .025,
                          ),
                          child: SvgPicture.asset(
                            "assets/arrow-left-s-line.svg",
                          ),
                        ),
                      ),

I don't know if it's necessarily happening because of the pop code but it's happening when I tapped there, if someone knows what the problem and how can I fix it, it will be very helpful. Thanks

CodePudding user response：

Just try to remove const keyword for your second route try below code its helpful to you. Refer official documentation here for push and pop routing.

      onTap: () {
                          Navigator.push(
                            context,
                            MaterialPageRoute(
                              builder: (context) =>
                                  CreateAccountPage(),
                            ),
                          );
                        },