Basically, I have a UI state data class as:

data class ServerState(
    val isLoading: Boolean = true,
    val fileData: MainData? = null,
    val error: Throwable? = null,
)

In my ViewModel there are two types of errors. First, is if the client is unreachable I show a full screen error with the text.

Now If someone tries to use another method it will also give an Exception, like for a single POST method. I want to show a Toast for that exception without passing context to the ViewModel.

For eg, this is a method in my ViewModel :-

    private val _uiState = MutableStateFlow(ServerState())
    val uiState = _uiState.asStateFlow()

    fun addFile(bytes: ByteArray) {
        viewModelScope.launch {
            when (
                val result: Result<Unit, Throwable> = runCatching {
                    client.add { rawFile["file_test"] = bytes }
                }
            ) {
                is Ok -> return@launch
                is Err -> emitException(result.error)
            }
        }
    }

    private fun emitException(e: Throwable) {
        val error = ExceptionHandler.mapException(e)
        _uiState.update { state -> state.copy(error = error) }
    }

I basically want to only show the major errors on full screen and minor method errors as Toast. Should I just add fields inside the state for it?

How should I approach this?

CodePudding user response：

For different UI behaviour just add another state. 2 different states will be handled at UI. 1 for full screen errors and another for Toasts.