Doubt in flutter

[P Sanjeevi]

Hi guys I am trying to create a fully functional dating app in flutter where we match 2 users and upon matching I need to chat with them and I tried implementing it using firebase, firestore and mobx but what happens is that it is taking the user id that I have already registered and I am not able to do the matching of 2 users can anyone help 

[Suzuki Tomohiro]

> it is taking the user id that I have already registered and I am not able to do the matching of 2 users

Can you describe the challenge in more detail?

On Wed, May 5, 2021 at 11:16 AM P Sanjeevi <patnamsa...@gmail.com> wrote:

Hi guys I am trying to create a fully functional dating app in flutter where we match 2 users and upon matching I need to chat with them and I tried implementing it using firebase, firestore and mobx but what happens is that it is taking the user id that I have already registered and I am not able to do the matching of 2 users can anyone help 

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[Suzuki Tomohiro]

(Please respond to flutter-dev mailing list; otherwise I will stop responding to you.)

> it is not working as I am taking only 1 user id that is registered user id

It's not clear why it's a problem. It's normal for 1 user to have 1 user ID. Would you describe the expected behavior of the app in your words? (Use your words; please don't say "it should work as the same way as tinder or bumble")

On Wed, May 5, 2021 at 12:03 PM Suzuki Tomohiro <suz...@gmail.com> wrote:

> it is not working as I am taking only 1 user id that is registered user id

It's not clear why it's a problem. It's normal for 1 user to have 1 user ID. Would you describe the expected behavior of the app in your words? (Use your words; please don't say "it should work as the same way as tinder or bumble")

On Wed, May 5, 2021 at 11:57 AM P Sanjeevi <patnamsa...@gmail.com> wrote:

Ok so generally I am trying to recreate the same functionality present in tinder or bumble apps where we do the match request but in my case it is not working as I am taking only 1 user id that is registered user id

[P Sanjeevi]

Ok so I need my app to display the list of other registered users and when I press a button I need a new collection to be added where it needs to store the registered user details and also the one that I am sending the match request and upon that I need to have another button where upon clicking I need to chat with that person this is what I want to achieve 

On Wed, 5 May, 2021, 9:38 pm P Sanjeevi, <patnamsa...@gmail.com> wrote:

I am doing that only bro 

[Suzuki Tomohiro]

I see 3 elements in your statements. Let's see one by one.

1. my app to display the list of other registered users

2. when I press a button I need a new collection to be added where it needs to store the registered user details the one that I am sending the match request

3. upon that I need to have another button where upon clicking I need to chat with that person

You seem to know what to do. What is the challenge?

• Do you know how to display the list of other registered users?
• Do you know how to place a button in UI?

[P Sanjeevi]

Yes I have already written the code but it's not working according to the elements that u mentioned 

[Suzuki Tomohiro]

Which part is not working? Do you want to share your code and screenshots?

[P Sanjeevi]

The part where we need to match 2 people and sure I will send u screenshots and videos 

[P Sanjeevi]

And shall I share my code to you through zip if that's OK with you?

[P Sanjeevi]

[P Sanjeevi]

These are all the screenshots bro 

[Suzuki Tomohiro]

> shall I share my code to you through zip if that's OK with you?

I only read public GitHub repositories.

[P Sanjeevi]

Sorry for the above one shall I share the public github link with you?

On Wed, 5 May, 2021, 11:18 pm P Sanjeevi, <patnamsa...@gmail.com> wrote:

Well ok shall I share the github link with you?

[Suzuki Tomohiro]

Yes, share the URL to this flutter-dev mailing list.

[P Sanjeevi]

Sorry for the late reply but here is the github link that u asked bro

https://github.com/sanju903/dating_app

[Suzuki Tomohiro]

The error is about missing documents in “chats” collection. Your code needs to specify correct location of documents.

What do you need help?

[P Sanjeevi]

Well if u see the firestore photos that I sent u all the uids look the same but it needs to have different uid only then the match request functionality and chat functionality becomes correct so can u just look at the code and tell me where it needs to change so that I can change 

[P Sanjeevi]

And also the length getting null where all the matched users will be shown if u have chatted with them 

[Suzuki Tomohiro]

Let’s solve one problem at a time.

> the firestore photos that I sent u all the uids look the same but it needs to have different uid only

Which code is responsible for this?

[P Sanjeevi]

chat_screen.dart and match_screen.dart file bro

[P Sanjeevi]

In chat_screen.dart file I need to display the matched users that I have chatted with and in match_screen.dart file I need the other users who are registered to the users apart from the registered user to be displayed

[Suzuki Tomohiro]

Which line of the code created the bad firestore document?

[P Sanjeevi]

I guess it's the chat_screen inside second future builder there is           if(connectionState.waiting) condition

On Thu, 6 May, 2021, 5:31 pm P Sanjeevi, <patnamsa...@gmail.com> wrote:

I guess it's the chat_screen inside second future builder there is           if(connectionState.waiting) condition 

[Suzuki Tomohiro]

Good. Set a breakpoint at that line that created the bad document. Read the stack trace to see why it has two uids with the same value.

[P Sanjeevi]

It's because I set the same id so how to place 2 different ids

[Suzuki Tomohiro]

Can you share the stack trace as text? It has line numbers and clarifies why it happens.

[P Sanjeevi]

Ok just a minute 

[P Sanjeevi]

_name:"ConnectionState.waiting"

index:1

hashCode:926647089

runtimeType:Type (ConnectionState)

data:null

error:null

stackTrace:null

hasData:false

hasError:false

hashCode:94098995

requireData:Unhandled exception: Bad state: Snapshot has neither data nor error #0 AsyncSnapshot.requireData (package:flutter/src/widgets/async.dart:253:5) #1 AsyncSnapshot.Eval () #2 _ChatScreenState.build.<anonymous closure>.<anonymous closure> (package:minglewise_clone_app/pages/chat_screen.dart:39:41) #3 _FutureBuilderState.build (package:flutter/src/widgets/async.dart:773:55) #4 StatefulElement.build (package:flutter/src/widgets/framework.dart:4612:27) #5 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4495:15) #6 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4667:11) #7 Element.rebuild (package:flutter/src/widgets/framework.dart:4189:5) #8 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4474:5) #9 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4658:11) #10 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4469:5) #11 Element.inflateWidg...

runtimeType:Type (AsyncSnapshot<List<ChatWithUser>>)

hashCode:74695014

runtimeType:Type (Type)

hashCode:991938221

runtimeType:Type (Type)

hashCode:991938221

runtimeType:Type (Type)

[P Sanjeevi]

This is where that bad state has occurred bro

[P Sanjeevi]

_delegate:DocumentSnapshotPlatform

_firestore:FirebaseFirestore (FirebaseFirestore(app: [DEFAULT]))

metadata:<not initialized>

reference:<not initialized>

exists:false

hashCode:1069331846

id:"JUu7xacaIcMIcDpelJVBt3EEoy92JUu7xacaIcMIcDpelJVBt3EEoy92"

runtimeType:Type (_JsonDocumentSnapshot)

[P Sanjeevi]

This is what is there in the stack trace for bad state bro

[Suzuki Tomohiro]

One problem at a time.

> the firestore photos that I sent u all the uids look the same but it needs to have different uid only

Give me the stack trace for the line that creates such bad document. (I see your screenshot was an error upon accessing non-existing document.)

[P Sanjeevi]

runtimeType:Type (AppUser)

hashCode:958953013

id:"JUu7xacaIcMIcDpelJVBt3EEoy92"

hashCode:109872757

runtimeType:Type (Type)

[P Sanjeevi]

runtimeType:Type (AppUser)

hashCode:336395146

id:"JUu7xacaIcMIcDpelJVBt3EEoy92"

hashCode:109872757

runtimeType:Type (Type)

[P Sanjeevi]

The above are the stacktraces of each user id

[P Sanjeevi]

And also I checked for all bro it shows the same as the above pictures

[Suzuki Tomohiro]

A stacktrace is stack of function calls. Not the content of objects.

[P Sanjeevi]

Bro that is what it is present whatever is available I sent u bro

[Suzuki Tomohiro]

Ok, then I cannot help further. Good luck.

[P Sanjeevi]

Ok so u are asking me to send the function of the uid placed bro

[P Sanjeevi]

I mean the stacktrace one