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Flutter – PopScope with arguments

I am trying to navigate back to a previous screen from my current screen.
OnWillPop was deprecated thus I am using PopScope with the following code

  canPop: true,
  onPopInvoked: (didPop)
  {
    Navigator.of(context).pushAndRemoveUntil(MaterialPageRoute(builder:(context)=>
    StepperScreen(param1: widget.param1, param2: widget.param2)),(Route<dynamic>route)=>false);
  },
  child: Scaffold(
      resizeToAvoidBottomInset: false,
      appBar: AppBar(....  ``` 

On the back button for the IOS it works perfectly but not on the PopScope

```  Navigator.of(context).pushAndRemoveUntil(MaterialPageRoute(builder:(context)=>
    StepperScreen(param1: widget.param1, param2: widget.param2)),(Route<dynamic>route)=>false); ```

Is there something I miss or should I use a different routing call.

I get the following response from the editor

``` I/ViewRootImpl@1beec50[MainActivity](28298): ViewPostIme key 0
I/ViewRootImpl@1beec50[MainActivity](28298): ViewPostIme key 1
D/Activity(28298): onKeyDown(KEYCODE_BACK)
D/Activity(28298): onKeyUp(KEYCODE_BACK) isTracking()=true isCanceled()=false hasCallback=false  ```  

Then the entire apps back navigation is broken and not even the back button in the app bar wants to work
Tags:

2

Answers


  1. 0

    Here is an example of how to implement PopScope:

    return PopScope(
      canPop: false,
      onPopInvoked: (didPop) {
        if (didPop) {
          return;
        }

        _showDialog();
      },
      child: Scaffold(
        appBar: ArchiveTvAppBar(

    With this example we open a dialog before poping, but you can do whatever else you want.

    Naturally in this example, in he _showDialog method, a pop is done for really poping when the user validate the dialog.

    Login or Signup to reply.
  2. 0 
      @override
  Widget build(BuildContext context) {
    return PopScope(
     canPop: false,
     onPopInvoked : (didPop){
      // logic
     },
     child: Scaffold()
   );
}
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