Crash when I modify a bind value with a text field

Question

Gwentey OP

Created Apr ’23

Replies 6

Boosts 0

Participants 2

Hi everyone,

I'm sorry to bother you, but I'm having a very annoying problem that I can't solve despite a lot of debugging time...

I will explain the context to you very quickly. I have a card list table (listes: [Liste]) in my ContentView page I do a foreach, and I pass one of the lists in binding in another view (AfficherUneListeView), and on this page I have a button which allows to modify the name of the list. When I'm on the edit list page and click on the textfield, my page "crashes" but not the app. So impossible to update the name (unless I'm very fast, I can modify a character and it spits (see the video to believe it).

https://youtu.be/9O-dATdAp2I

Here is the flow diagram of the list variable: ContentView -> then binding on AfficherUneListeView then Binding on ModifierUneListeVuew then Binding on TextField

I have attached all the files necessary to make it work, the code. I searched for hours, I followed tutorials... I can't understand I'm desperate, thank you in advance everyone!

Model structures (carte, listes, session) :

And the app :

ModifierUneListeView.swift

AfficherUneListeView.swift

Answered by Claude31 in 751273022

Well, I attach a file.

All changes are marked as ## (hope I marked them all).

Forum thread 728433.txt

Please ask if anything not clear or not working. Otherwise, complete the rest of your code using the same pattern (StateObject / EnvironmentObject / .environment(theObject) and don't forget to close the thread.

Boost

Answer 1

Claude31 OP

Apr ’23

I'm sorry to bother you

You should not, that's the very purpose of the forum.

But we miss several struct to test:

SentrainerUIView
CreeUneListeView
ModifierUneCarte

You should try to run it in simulator instead of Preview.

If that does not work either, I would try to replace @State var listes with a @StateObject that I would pass to environment…

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Answer 2

Gwentey OP

Apr ’23

I attached the structs messing.

SentrainerUIView: is empty (no developed) CreeUneListeView : work ModifierUneCarte : the design is done, but the modification does not work (I am waiting for the modification of a list to work)

Thanks in advance :-)

SentrainerUIView.swift

ModifierUneListeView.swift

ModifierUneCarte.swift

AjouterUneCarteView.swift

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Answer 3

Claude31 OP

Apr ’23

It still misses CreerUneListe

This init in ModifierUneCarte is incorrect

    init(carte: Binding) {

It is probably

    init(carte: Binding&lt;Carte>) {

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Answer 4

Gwentey OP

Apr ’23

It's really amazing, because in my code I have:

init(carte: Binding&lt;Carte>) {

but when I put the file on the forum it disappears to put only "binding".... It's really very strange...

Sorry I attached you "CreerUneListeView"

CreeUneListeView.swift

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Answer 5

Claude31 OP

Apr ’23

Problem comes from

        TextField("Nom de la liste", text: $liste.nom)

If you replace (for test purpose)

            TextField("Nom de la liste", text: $listeNom)

where

@State var listeNom : String = "-"

Then you can tap in the TextField.

Problem comes (I think) from the Binding, which does not bind the property .nom

I succeeded to make it working (at least starts to) with environment var.

Mais le code est long. Si vous pouvez me donner une adresse où envoyer l'ensemble, je vous posterai les modifications.

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Answer 6

Claude31 OP

Apr ’23

Accepted Answer

Well, I attach a file.

All changes are marked as ## (hope I marked them all).

Forum thread 728433.txt

Please ask if anything not clear or not working. Otherwise, complete the rest of your code using the same pattern (StateObject / EnvironmentObject / .environment(theObject) and don't forget to close the thread.

0