Help - I'm trying to "improve" the structure of my iOS app by splitting it down into multiple source files and have only succeeded in breaking it!

In the top-level app I have an @StateObject and I pass this as a .environmentObject into my ContentView

I have the @EnvironmentObject defined in my ContentView

That part all looks good to me.

I have a .onAppear{myFunction()} on the ContentView body.

The onAppear fires correctly and myFunction() gets called.

myFunction() retrieves a file from a remote website. This also works correctly - I can print() the contents of the file.

So, at this point I have the data I need sitting inside myFunction() but I simply cannot figure how to then update the @StateObject from within myFunction() so that the ContentView gets refreshed via its @EnvironmentObject ...

In summary:

func myFunction() {

fetch file from website <-- works fine

update @StateObject in top-level app with file content <-- cannot get this working

}

Can anyone point me towards a solution?

Many thanks!

Well, I have just managed to get it working once again - but I don't know how correct my solution is!

I changed myFunction() to accept the @EnvironmentObject as a parameter from the ContentView .onAppear

Within myFunction() I submit an update to the passed @EnvironmentObject to the .main queue.

This approach seems to correctly update the @StateObject which in turn fires updates to the appropriate views.

Have you considered moving myFunction to the state object? So, in .onAppear, you just call to startObject.myFunction() which loads the remote file and updates the published variable in stateObject when it's finished. You dont need topass the state object then as myFunction already has access to self.

Just a thought.