I have need a flutter Box in Multiselect Box and get value - flutter

I have need a flutter Box in Multiselect Box and get value, when i clicked the boxed then changed the box color and according to the user unselect the box
same like as i need code
I have need a flutter Box in Multiselect Box and get value, when i clicked the boxed then changed the box color and according to the user unselect the box
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How to display dialog box inside textFieldSearch after selecting an item in search dropdown in flutter

I'm searching from textFieldSearch, after selecting an item from searchDropdown I want a popUp
What I tried ->
In textFieldSearch getSelected property I tried calling AlertDialog, But it's not displaying.
What I'm expecting ->
After selecting an item from searchDropDown I want a popUp

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Example taking textfield xtype
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Create a component simpleselection save
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For Touch UI you can find article, forum

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