showAlertDialog method
Implementation
showAlertDialog(BuildContext context) {
// set up the AlertDialog
AlertDialog alert = AlertDialog(
title: const Text("Alert"),
content: const Text("Some thing wrong with this url"),
actions: [
TextButton(
child: const Text("OK"),
onPressed: () {
Navigator.of(context).pop();
},
),
],
);
// show the dialog
showDialog(
context: context,
builder: (BuildContext context) {
return alert;
},
);
}