Flutter Alert Dialog doesn't work/displaying

Question

So I am facing this problem that my alert Dialog isn't displaying. I had tried every possible solution and searching here and there but nothing works. When I click on the edit button from the pop up menu nothing is displayed everything remains the same. enter image description here

Calling alert Dialog

trailing: PopupMenuButton(
 icon: Icon(Icons.more_vert),
 itemBuilder: (context)=>[
 PopupMenuItem(
 value:1,
 onTap: (){
 //debugPrint('popup');
 Navigator.pop(context);
 _showMyDialog();
 },
 child: ListTile(
 leading: Icon(Icons.edit),
 title: Text('Edit'),
 )),
 PopupMenuItem(
 value:1,
 // onTap: (){
 // Navigator.pop(context);
 // showDialogBox();
 // },
 child: ListTile(
 leading: Icon(Icons.delete),
 title: Text('Delete'),
 )),
 ]),

Alert Dialog Code

Future<void> showDialogBox(String title)async{
editController.text=title;
debugPrint('dialog');
return showDialog<void>(
 context: context,
 barrierDismissible: false,
 builder: (BuildContext context){
 debugPrint('alert');
 return AlertDialog(
 title: Text('Update'),
 content: Container(
 child: TextFormField(
 controller: editController,
 ),
 ),
 actions: [
 TextButton(onPressed: (){
 Navigator.pop(context);
 }, child: Text('Update')),
 TextButton(onPressed: (){
 Navigator.pop(context);
 }, child: Text('Cancel')),
 ],
 );
 }

); } Complete Class Code

import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_database/ui/firebase_animated_list.dart';
import 'package:firebase_tutorial/utils/routes/routes_names.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:firebase_database/firebase_database.dart';
import '../../utils/utils.dart';
class PostScreen extends StatefulWidget {
 const PostScreen({Key? key}) : super(key: key);
 @override
 State<PostScreen> createState() => _PostScreenState();
}
class _PostScreenState extends State<PostScreen> {
 final ref=FirebaseDatabase.instance.ref('Post');
 FirebaseAuth _auth=FirebaseAuth.instance;
 final searchController=TextEditingController();
 final editController=TextEditingController();
 @override
 Widget build(BuildContext context) {
 return WillPopScope(
 onWillPop: ()async{
 SystemNavigator.pop();
 return true;
 },
 child: Scaffold(
 appBar: AppBar(
 automaticallyImplyLeading: false,
 title: Text('Post Screen'),
 actions: [
 GestureDetector(
 onTap: (){
 _auth.signOut().then((value){
 Navigator.pushNamed(context, RoutesNames.loginScreen);
 }).onError((error, stackTrace){
 Utils().toastMessage(error.toString());
 });
 },
 child: Icon(Icons.logout_outlined)),
 SizedBox(width: 10,),
 ],
 ),
 floatingActionButton: FloatingActionButton(
 onPressed:(){
 Navigator.pushNamed(context, RoutesNames.newPost);
 },
 child: Icon(Icons.add),),
 body: Column(
 children: [
 // Expanded(
 // child:FirebaseAnimatedList(
 // query: ref,
 // itemBuilder: (context,snapshot,animation,index){
 // return ListTile(
 // title: Text(snapshot.child('post').value.toString()),
 // );
 // }
 // ),
 // ),
 Padding(
 padding: const EdgeInsets.all(10.0),
 child: TextFormField(
 onChanged: (String value){
 setState(() {
 });
 },
 controller: searchController,
 decoration: InputDecoration(
 border: OutlineInputBorder(),
 hintText: "Search",
 ),
 ),
 ),
 Expanded(child: StreamBuilder(
 stream: ref.onValue,
 builder: (context,AsyncSnapshot<DatabaseEvent> snapshot){
 if(!snapshot.hasData){
 return CircularProgressIndicator();
 }
 else{
 return ListView.builder(
 itemCount: snapshot.data!.snapshot.children.length,
 itemBuilder: (context,index){
 Map<dynamic,dynamic> map=snapshot.data!.snapshot.value as dynamic;
 List<dynamic> list=[];
 list.clear();
 list=map.values.toList();
 final title=list[index]['post'].toString();
 if(searchController.text.isEmpty){
 return ListTile(
 title: Text(list[index]['post']),
 subtitle: Text(list[index]['id'].toString()),
 trailing: PopupMenuButton(
 icon: Icon(Icons.more_vert),
 itemBuilder: (context)=>[
 PopupMenuItem(
 value:1,
 onTap: (){
 //debugPrint('popup');
 Navigator.pop(context);
 _showMyDialog();
 },
 child: ListTile(
 leading: Icon(Icons.edit),
 title: Text('Edit'),
 )),
 PopupMenuItem(
 value:1,
 // onTap: (){
 // Navigator.pop(context);
 // showDialogBox();
 // },
 child: ListTile(
 leading: Icon(Icons.delete),
 title: Text('Delete'),
 )),
 ]),
 );
 }
 else if(title.toLowerCase().contains(searchController.text.toLowerCase())){
 return ListTile(
 title: Text(list[index]['post']),
 subtitle: Text(list[index]['id'].toString()),
 );
 }
 else{
 return Container();
 }
 });
 }
 }))
 ],
 ),
 ),
 );
 }
 Future<void> showDialogBox(String title)async{
 editController.text=title;
 debugPrint('dialog');
 return showDialog<void>(
 context: context,
 barrierDismissible: false,
 builder: (BuildContext context){
 debugPrint('alert');
 return AlertDialog(
 title: Text('Update'),
 content: Container(
 child: TextFormField(
 controller: editController,
 ),
 ),
 actions: [
 TextButton(onPressed: (){
 Navigator.pop(context);
 }, child: Text('Update')),
 TextButton(onPressed: (){
 Navigator.pop(context);
 }, child: Text('Cancel')),
 ],
 );
 }
 );
 }
}

Answer 1

try adding a delay before calling showDialog like this:

await Future.delayed(const Duration(milliseconds: 10));

Your dialog isnt displayed because when you select a menu item the pop() method is automatically called to close the popup menu; so if you open a dialog immediately, the dialog will get automatically popped. hope this fixes your issue

• Hamza Khan: Thank you so much for your help its work but only when i remove the pop statement. With the pop statement it actually pop the home screen and go to the splash screen but whenever i remove the pop state and added a delay as you said it works
• Hamza Khan: But it still works the same because when the alert dialog displayed the pop menu get popped itself. All thanks to you
• Kimiya Zargari: You're very welcome. No you don't need to call the pop() method, it gets called automatically when you select a menu item, and that's exactly why your dialog wasn't showing. I'm happy I could help. if the answer worked, I would appreciate it if you accept the answer. thank you