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kotlinlang

I have a very simple question :disappointed: I have a complex Screen and ViewModel
When screen starts i use this method to load data from repo etc.
```LaunchedEffect(Unit) {
    viewModel.checkData()
}```
Ok.. i change screen with navigation
```navController.navigate(screen.route) 
   ```
the problem is when go back with
```navController.navigateUp()```
viewModel reload all data

It is because your composable is composed again. checkData() [reload func] should be called once only when viewmodel is created

but i create viewModel in navigation
```composable(Destination.XXX.path) {
    val viewModel: MyViewModel = hiltViewModel()
        MyScreen(viewModel)
  
}```
if i put checkData inside init() checkData will start before Composable

it;s strange.. i put checkData inside init() and it works

yes, because viewmodel is not destroyed when you come back. UI is created again, but VM is there.

that is one of the main essence of VM in android