Handle mutually exclusive states in the state

[AnupFinaccel]

How to handle mutually exclusive states? Lets consider a screen that transitions from UserInput to InputConfirmation state. Let's ignore the events

sealed class UiState {
    data class UserInput(
        val age: Int,
        val firstName: String,
        val secondName: String,
        val phone: String,
    ): UiState()
    
    data class InputConfirmation(
        val age: Int,
        val name: String,
        val phone: String,
    ): UiState()
}

@Composable
fun present(): UiState {
    // How to handle the different mutually exclusive states? 
}

I actually want to create a separate class to handle them separately.

@Stable
class UserInputState() {
    private val state = mutableStateOf( UserInput.Empty )
    
   fun state() = state.value

   fun handleAction() = TODO()
}

My main concern is handling the transitions in the present() function. Any thoughts on achieving this??

[stagg]

If I'm following the example correctly, I think you just output UserInputState.state() from the present() function?

Some event/action performs a mutation in the UserInputState to set the state to InputConfirmation and the composition observes the state write.

[AnupFinaccel]

Yes

[stagg]

Ok, so I'm not understanding what the question and/or problem is then.

[AnupFinaccel]

Consider a screen that transitions to multiple states, much like a state machine. A --> B --> C -->D, where the alphabets are the states and each of these states have a different set of actions.

Now, how to break down the presenter to handle these states and corresponding actions?

[stagg]

Oh, just standard conditional logic and some internal state/values to determine the UI state.
The "Tacos" sample shows this for moving though the sub states, and the "Star" sample shows this for loading data.