Question 316229 in Flutter Question posted in
The official Flutter documentation can be found here.

WillPopScope is deprecated and shouldn't be used. Use PopScope instead. Flutter

I am getting this warning. I have read the documentation. But my code is returning the true, or false value on some condition. How can I migrate this?

WillPopScope(
            onWillPop: () async {
              if (_actionIcon.icon == Icons.search) {
                return true;
              } else {
                setState(() {
                  _actionIcon = const Icon(
                    Icons.search,
                    color: Colors.white,
                  );
                  _appBarTitle = Text('Heading',
                  _managePayrollBloc.add(_getSearch(""));
                });
                return false;
              }
            },
            child: SomeChild()
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2

Answers


  1. Chosen as BEST ANSWER
    0

    I have created a new variable

     bool didPop = true;

    and then assigned this to canPop. This value is updated in the if condition.

    PopScope(
            canPop: didPop,
            onPopInvoked: (bool didPop) async {
              if (_actionIcon.icon == Icons.search) {
                didPop = true;
              } else {
                setState(() {
                  _actionIcon = const Icon(
                    Icons.search,
                    color: Colors.white,
                  );
                  _appBarTitle = Text(LocaleKeys.payroll.tr(),
                      style: const TextStyle(color: Colors.white));
                });
                didPop = false;
              }
            },
            child:SomeChild()

  2. 0

    You can replace that like this:

    PopScope(
  canPop: _myPopDisableEnableLogic(), // set it true according your app logic - your 1st if condition can be inside this (_actionIcon.icon == Icons.search return true

  onPopInvoked: (bool didPop) async {
    // put only else condition part of your code here without returning anything
  },
)
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