Flutter Alert Dialog for ask User's confirmation

Alert Dialog for ask User's confirmation

confirmDialog(String clientSecret,PaymentMethod paymentMethod) {
    var confirm = AlertDialog(
      title: Text("Confirm Payement"),
      content: Container(
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            Text(
              "Make Payment",
             // style: TextStyle(fontSize: 25),
            ),
            Text("Charge amount:\$100")
          ],
        ),
      ),
      actions: <Widget>[
        new RaisedButton(
          child: new Text('CANCEL'),
          onPressed: () {
            Navigator.of(context).pop();
             final snackBar = SnackBar(content: Text('Payment Cancelled'),);
             Scaffold.of(context).showSnackBar(snackBar);
          },
        ),
        new RaisedButton(
          child: new Text('Confirm'),
          onPressed: () {
            Navigator.of(context).pop();
            confirmPayment(clientSecret, paymentMethod); // function to confirm Payment
          },
        ),
      ],
    );
    showDialog(
        context: context,
        barrierDismissible: false,
        builder: (BuildContext context) {
          return confirm;
        });
  }