Question 76700 in Flutter Question posted in
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How to find the page is currently in the list or not? – Flutter

I have a List of Pages. The list type is widget. when I tried to find if there is any element match with the HomePage it always return false.

This is my code:

List<Widget> pages = [Home(), SecondPage(), ThirdPage(),SizedBox()]

when I check with the condition pages.contains(Home()) it gives false.

how do I find if the HomePage is currently present in the list or not.So that I can navigate to the correct previous page.

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2

Answers


  1. 0

    You should try with runtimeType.

    pages.map((e) -> e.runtimeType).contains(Home().runtimeType)

    Reason:
    Objects in flutter are not equal (except primitive data types and String) by default. Hence 2 objects of Home() is not equals. contains works with equality. runtimeType of class will be string so contains will work.

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  2. 0

    This helps you.

    bool hasHome = pages.any((page) => page is Home);

    Iterable any method

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