I have simply list in my flutter app:
var items = List<String>();
items.add('1');
items.add('2');
items.add('3');
I converted it to string:
var values =items.join(',');
Result:
"[1,2,3]"
But I need json array, like it:
["1","2","3"]
How I create it from my list? it should be easy - but I'm stuck. any advice?