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flutterflutter-layoutflutter-provider

Flutter: Is There a way to identify if the context has the required provider or if context has MediaQuery

I have situation where i am using .of(context) in a function to get the Scoped Object data and use it. However this function is sometimes invoked with a context that does not provide the required context and so it cannot be used and takes default value.

What i am trying to do is to check if the given say MediaQuery is scoped in the context and do something else rather than use default value.

Solution

  • we can find the widget or data is in the ancestor of the context by using this method.

    context.findAncestorWidgetOfExactType<T>() != null

    for example to check if Media Query Data is in the passed context context.findAncestorWidgetOfExactType<MediaQuery>() != null

    If this check returns true then we have MediaQueryData available in the context passed.