build(BuildContext context) { final isLandscape = MediaQuery.of(context).orientation == Orientation.landscape; // check if the orientation is landscape // further down your code you can use 'if' or 'ternary' or both if (!isLandscape) txListWidget, if (isLandscape) _ternaryCondition ? _showFirstWidget : _showSecondWidget // the above widgets would be in a 'Row' or 'Column' }