Hi@akhtar,
You can do this with the help of rflutter package in Flutter. RFlutter Alert is a super customizable and easy-to-use alert/popup dialogs for Flutter. You may create reusable alert styles or add buttons as much as you want with ease. You can see the below example.
    Alert(
      context: context,
      type: AlertType.error,
      title: "RFLUTTER ALERT",
      desc: "Flutter is more awesome with RFlutter Alert.",
      buttons: [
        DialogButton(
          child: Text(
            "COOL",
            style: TextStyle(color: Colors.white, fontSize: 20),
          ),
          onPressed: () => Navigator.pop(context),
          width: 120,
        )
      ],
    ).show();
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