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How can I use condition in widget? I did it with empty widget like container() or Text() but when I put empty Widget in row() and give spaceBetween of MainAxisAlignment it takes their own space without any showing. Searching on the internet I think there are only the old info so that's not working anymore (if I am wrong I'm really sorry).

If conditions are not allowed and I do not want to show the widget - How can i do that?

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    Provide more detail also add some code Commented Jul 16, 2019 at 13:27
  • Please write a proper and detailed question. How do I ask a good question? Commented Jul 16, 2019 at 14:04

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If i understand correctly, you want to render Row conditional with size of childrens.

List<Widget> elements = [] Row(children: elements)

First option is to initiate elements inside your initState(){} method. Another one, if you want to change it dynamically, then you have to know about setState(){} method and how key works, that is optional attribute of all Stateful/Stateless Widgets.

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thank you actually i saw the youtube video about key published by google developer but it's a little bit iffy so... do you now any other site to understand about key?

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