flutter how to floatingactionbutton overlapping alertdialog? - flutter

Question

I want to floating action button is front of the alert dialog, I tried add elevation to floatingactionbutton and alertdialog but still not working. is it possible to make floatingactionbutton overlapping all layout including alertdialog?
this my alertdialog using lib rflutter_alert
var alertStyle = AlertStyle(
// animationType: AnimationType.fromTop,
alertElevation: 1,
isCloseButton: false,
isOverlayTapDismiss: false,
descStyle: TextStyle(fontSize: textBody3),
descTextAlign: TextAlign.center,
titleStyle: TextStyle(
color: Colors.red,
fontSize: textHeader1,
fontWeight: FontWeight.bold),
alertAlignment: Alignment.center,
);
Alert(
context: context,
style: alertStyle,
content: Column(
children: <Widget>[
const SizedBox(
height: 30,
),
Text(msg),
const SizedBox(
height: 30,
),
Text(jam)
],
),
buttons: [
DialogButton(
child: Text(
"OK",
style: TextStyle(color: Colors.white, fontSize: textButton1),
),
onPressed: () => Navigator.pop(context),
color: Palette.color_primary,
radius: BorderRadius.circular(0.0),
),
],
image: flag == "OK"
? Image.asset(
"assets/images/success.png",
height: 50,
width: 50,
)
: Image.asset(
"assets/images/error.png",
height: 50,
width: 50,
),
).show();
and this the floatingactionbutton using lib DraggableFab
#override
Widget build(BuildContext context) {
return Scaffold(
floatingActionButton: DraggableFab(
child: FloatingActionButton.extended(
elevation: 10,
onPressed: () {
getLocation();
},
label:ValueListenableBuilder(
valueListenable: notifierLocFab,
builder: (BuildContext context, bool value,Widget? child) {
return Column(
children: [
Text(latitudeFab.toStringAsFixed(7)),
Text(longitudeFab.toStringAsFixed(7)),
],
);
}),
),
),
);
}