withState¶

inline fun <S :VectorState> withState(viewModel:VectorViewModel<S>, crossinline block: (S) ->Unit):Unit

A convenience function to access current state and execute an action on it.

Parameters¶

S - The type of the current state

block -

The action to be performed using the current state

Example:

class MyViewModel(): VectorViewModel()

class MyFragment(): VectorFragment { onViewCreated(...) { withState(viewModel) { state -> if (state.isPremiumUser) { premiumFeature.enable() } } } }

Note: The state provided to the block is not guaranteed to be the latest state, because there might be other state mutation blocks in the State Store's queue

Warning: This WILL cause your app to crash if you create your ViewModels without initial state and fail to provide it later, before calling this function.