是否可以在 flutter 中添加浮动操作按钮所需的参数？

Question

If you see some E-commerce apps it prompts a size or color required to be selected,if you click on add to cart button without selecting a color or size.When the user clicks on add to cart button i want a required parameter, where the user should select a size and only then the function in onPressed should work. .How do i add that required parameter with FloatingActionButton?

Answer 1

Then you can use an expanded Floating action button which displays the size and on clicking the size it can add the item to cart. Or else you can have a dialog box to select the size and after that, it can be added to cart.