To align a child widget within its parent you use the Align widget. If you know how to use the Center widget then you are the right track because Center is just a special case of Align . Wrap the widget you wish to align with the Align widget and set its alignment property .
Read moreHow do you align text in textfield flutter?
textAlign: TextAlign. center will align the text horizontally. To vertically align, you need to use textAlignVertical: TextAlignVertical. center property.
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