Question 75616 in Flutter Question posted in
The official Flutter documentation can be found here.

How to use Builder in order to create the context – Flutter

I have this method which needed a context so I’m passing it as a parameter.

Future<void> myPopup(BuildContext context) {
  return Dialogs.materialDialog(
    context: context,
    ...
  );
}

I tried to wrap the whole Dialogs.materialDialog with Builder in order for me not to pass the context anymore but I’m unable to do it.

Builder(
  builder: (BuildContext context) {
    return Dialogs.materialDialog(
      context: context,
      ...
    );
  },

How can I achieve the same output using the Builder?

Tags:

2

Answers


  1. 0

    You don’t need to wrap your method in a Builder to be able to give it the context. The context can be used from the build method.

      Future<void> myPopup(BuildContext context) {
  return Dialogs.materialDialog(
    context: context,
    ...
   );
  }
  
  @override
  Widget build(BuildContext context) { //Context is already defined in the build.
    return TextButton(
      child: Text('Press me'),
      onPressed: () {
        myPopup(context);
      },
    );
  }

    Also @rahul has a point with the method not being assignable to the child widget as the return type is different than what is expected.

    Login or Signup to reply.
  2. 0

    not to pass the context, I think you are looking for LookupBoundary but currently it is on master-api.

    On your case it will be

    LookupBoundary(
    child: Builder(
      builder: (BuildContext context) {
        return Dialogs.materialDialog(
         context: context,
      ...
      )
    );
  },
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search