You can use the setState method to update the state of your widget and trigger a rebuild of the widget with the updated list of pending invoices. In the callback function for the snack bar’s “accept” action button, you can call setState to update the list of pending invoices and remove the invoice that was accepted. You can pass a function to setState that takes the previous state as an argument and returns the updated state, like so:

setState((prevState) {
return {
...prevState,
pendingInvoices: prevState.pendingInvoices.where((invoice) => invoice.id != acceptedInvoiceId).toList()
};
});


This code will remove the invoice from the list using where method.

You can also use the update method of the Future class in the callback function for the snack bar’s “accept” action button. This will update the list of pending invoices and remove the invoice that was accepted.

Future.delayed(Duration(seconds: 2),(){
setState(() {
pendingInvoices = pendingInvoices.where((invoice) => invoice.id != acceptedInvoiceId).toList();
});
});


This will wait for 2 seconds before updating the state and removing the invoice from the list. Please make sure you are passing correct invoice id.