Disclamer: As of May 2021 the FlatButton class in flutter is deprecated . TextButton class should be used instead. The later class will eventually be removed from flutter SDK, so it is suggested to move to the newer class.
Read moreHow do you increase outlined button size in flutter?
We can control the size of an outlined button by using the fixedSize option of the styleFrom static method .
Read moreHow do you change the height and width of an ElevatedButton in flutter?
“how to define height width for elevatedbutton in flutter” Code Answer’s
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