Popup Menu Button inside Gesture Button not working in Flutter - flutter

Question

I am Making a PopUp menu inside Gesture Button but on clicking that button the menu does not show up. Nothing is happening on clicking the button. What should I do to make it visible on clicking the button?
I also used Focused Menu Button but the same happened with it as well. I cannot figure out the problem.
I am making a Screen like this:
I want to show these menus on clicking button:
My code for Screen is this:
import 'package:epicare/NavigBar.dart';
import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:focused_menu/focused_menu.dart';
import 'package:focused_menu/modals.dart';
import 'AddMedicineScreen.dart';
class MedicinesRecord extends StatefulWidget {
#override
_MedicinesRecordState createState() => _MedicinesRecordState();
}
class _MedicinesRecordState extends State<MedicinesRecord>
with TickerProviderStateMixin {
TabController _tabController;
var _selectedIndex = 0;
#override
void initState() {
super.initState();
_tabController = TabController(length: 2, vsync: this)
..addListener(() {
setState(() {
_selectedIndex = _tabController.index;
});
});
}
#override
void dispose() {
super.dispose();
_tabController.dispose();
}
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
appBar: AppBar(
backgroundColor: const Color(0xffE5E0A1),
elevation: 0,
centerTitle: true,
title: Text(
"Medicine",
style: TextStyle(
fontSize: 15.0,
color: Colors.black,
fontFamily: 'Montserrat',
fontWeight: FontWeight.normal,
),
),
leading: IconButton(
icon: Icon(
Icons.arrow_back,
color: Colors.black,
),
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) {
return Homepage();
},
),
);
},
),
),
body: Column(
children: [
// give the tab bar a height [can change height to preferred height]
Container(
margin: EdgeInsets.only(top: 32, right: 45, left: 45),
height: 45,
decoration: BoxDecoration(
color: const Color(0xffE5E0A1),
borderRadius: BorderRadius.circular(
17.0,
),
border: Border.all(width: 1.0, color: const Color(0xff2f363d)),
),
child: TabBar(
controller: _tabController,
// give the indicator a decoration (color and border radius)
indicator: BoxDecoration(
borderRadius: BorderRadius.circular(
17.0,
),
color: Colors.black,
),
labelColor: const Color(0xffd4d411),
unselectedLabelColor: Colors.black,
tabs: [
// first tab [you can add an icon using the icon property]
Tab(
child: Text(
'Medicines',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 16,
//color: const Color(0xffd4d411),
letterSpacing: 0.48,
),
textAlign: TextAlign.left,
),
),
// second tab [you can add an icon using the icon property]
Tab(
child: Text(
'History',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 16,
//color: const Color(0xffd4d411),
letterSpacing: 0.48,
),
textAlign: TextAlign.left,
),
),
],
),
),
// tab bar view her
Expanded(
child: TabBarView(
controller: _tabController,
children: [
// Container(
//padding: EdgeInsets.symmetric(vertical: 25, horizontal: 32),
//height: 50,
//child:
Medicine(),
//),
// second tab bar view widget
MedHistory(),
],
),
),
],
),
floatingActionButton: _selectedIndex > 0
? Container()
: FloatingActionButton(
child: Icon(
Icons.add,
size: 40,
),
backgroundColor: const Color(0xffd4d411),
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) {
return AddMedicine();
},
),
);
},
),
);
}
Widget Medicine() {
Size size = MediaQuery.of(context).size;
return ListView(
children: [
Container(
margin: EdgeInsets.only(top: 25, left: 32, right: 32),
width: size.width * 0.80,
height: 54,
padding: EdgeInsets.symmetric(vertical: 11, horizontal: 20),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(9.0),
color: Colors.white,
boxShadow: [
BoxShadow(
color: const Color(0x29000000),
offset: Offset(0, 3),
blurRadius: 6,
),
],
),
child: Stack(
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Panadol',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 12,
fontWeight: FontWeight.w500,
color: const Color(0xff232425),
),
textAlign: TextAlign.left,
),
Text(
'Thrice a day',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 10,
color: const Color(0x80232425),
fontWeight: FontWeight.w500,
),
textAlign: TextAlign.left,
),
],
),
Container(
width: size.width,
child: Column(
crossAxisAlignment: CrossAxisAlignment.end,
children: [
Text(
'50 mg',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 10,
fontWeight: FontWeight.w600,
color: const Color(0x80515559),
),
textAlign: TextAlign.left,
),
GestureDetector(
onTap: () {
myPopMenu();
// FocusedMenuHolder(
// menuBoxDecoration: BoxDecoration(
// color: const Color(0xFFD9D9D9),
// ),
// animateMenuItems: false,
// duration: Duration(milliseconds: 500),
// blurBackgroundColor: Colors.white,
// blurSize: 2,
// menuWidth: size.width * 0.5,
// onPressed: () {},
// menuItems: <FocusedMenuItem>[
// FocusedMenuItem(
// title: Text(
// "Edit",
// style: TextStyle(
// fontFamily: 'Montserrat',
// fontWeight: FontWeight.w600,
// fontSize: 14,
// color: const Color(0xff000000),
// ),
// textAlign: TextAlign.center,
// ),
// onPressed: () {}),
// FocusedMenuItem(
// title: Text(
// "Delete",
// style: TextStyle(
// fontFamily: 'Montserrat',
// fontWeight: FontWeight.w600,
// fontSize: 14,
// color: const Color(0xff000000),
// ),
// textAlign: TextAlign.center,
// ),
// onPressed: () {})
// ],
// );
},
child: Icon(
Icons.more_horiz,
size: 20,
),
)
],
),
),
],
),
),
],
);
}
Widget MedHistory() {
Size size = MediaQuery.of(context).size;
return ListView(
children: [
Container(
margin: EdgeInsets.only(top: 25, left: 32, right: 32),
width: size.width * 0.80,
height: 50,
padding: EdgeInsets.symmetric(vertical: 11, horizontal: 20),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(9.0),
color: Colors.white,
boxShadow: [
BoxShadow(
color: const Color(0x29000000),
offset: Offset(0, 3),
blurRadius: 6,
),
],
),
child: Stack(
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Panadol',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 12,
fontWeight: FontWeight.w500,
color: const Color(0xff232425),
),
textAlign: TextAlign.left,
),
Text(
'From: 1 Jan,2021',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 10,
color: const Color(0x80232425),
fontWeight: FontWeight.w500,
),
textAlign: TextAlign.left,
),
],
),
Container(
width: size.width,
child: Column(
crossAxisAlignment: CrossAxisAlignment.end,
children: [
Text(
'50 mg',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 10,
fontWeight: FontWeight.w600,
color: const Color(0x80515559),
),
textAlign: TextAlign.left,
),
Text(
'Ongoing',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 10,
fontWeight: FontWeight.w600,
color: const Color(0x80232425),
),
textAlign: TextAlign.left,
),
],
),
),
],
),
),
Container(
margin: EdgeInsets.only(top: 25, left: 32, right: 32),
width: size.width * 0.80,
height: 50,
padding: EdgeInsets.symmetric(vertical: 11, horizontal: 20),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(9.0),
color: Colors.white,
boxShadow: [
BoxShadow(
color: const Color(0x29000000),
offset: Offset(0, 3),
blurRadius: 6,
),
],
),
child: Stack(
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Calpol',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 12,
fontWeight: FontWeight.w500,
color: const Color(0xff232425),
),
textAlign: TextAlign.left,
),
Text(
'As needed',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 10,
color: const Color(0x80232425),
fontWeight: FontWeight.w500,
),
textAlign: TextAlign.left,
),
],
),
Container(
width: size.width,
child: Column(
crossAxisAlignment: CrossAxisAlignment.end,
children: [
Text(
'250 mg',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 10,
fontWeight: FontWeight.w600,
color: const Color(0x80515559),
),
textAlign: TextAlign.left,
),
Text(
'Ended: 20 Jan, 2021',
style: TextStyle(
fontFamily: 'Montserrat',
fontSize: 10,
fontWeight: FontWeight.w600,
color: const Color(0x80232425),
),
textAlign: TextAlign.left,
),
],
),
),
],
),
),
],
);
}
Widget myPopMenu() {
return PopupMenuButton(
color: Colors.white,
onSelected: (value) {
Fluttertoast.showToast(
msg: "You have selected " + value.toString(),
toastLength: Toast.LENGTH_SHORT,
gravity: ToastGravity.BOTTOM,
timeInSecForIosWeb: 1,
backgroundColor: Colors.black,
textColor: Colors.white,
fontSize: 16.0);
},
itemBuilder: (context) => [
PopupMenuItem(
value: 1,
child: Row(
children: <Widget>[
Padding(
padding: const EdgeInsets.fromLTRB(2, 2, 8, 2),
child: Icon(Icons.print),
),
Text('Print')
],
)),
PopupMenuItem(
value: 2,
child: Row(
children: <Widget>[
Text(
"Edit",
style: TextStyle(
fontFamily: 'Montserrat',
fontWeight: FontWeight.w600,
fontSize: 14,
color: const Color(0xff000000),
),
textAlign: TextAlign.center,
),
],
),
),
PopupMenuItem(
value: 3,
child: Row(
children: <Widget>[
Text(
"Delete",
style: TextStyle(
fontFamily: 'Montserrat',
fontWeight: FontWeight.w600,
fontSize: 14,
color: const Color(0xff000000),
),
textAlign: TextAlign.center,
),
],
)),
]);
}
}
P.S: I am new to Flutter. Please help me out