hooks
library
Functions
-
useCallback<T extends Function>(T callback, List dependencies)
→ T
-
Returns a memoized version of
callback that only changes if one of the dependencies has changed.
-
useContext<T>(Context<T> context)
→ T
-
Returns the value of the nearest Context.Provider for the provided
context object every time that context is
updated.
-
useDebugValue<T>(T value, [dynamic format(T)?])
→ dynamic
-
Displays
value as a label for a custom hook in React DevTools.
-
useEffect(dynamic sideEffect(), [List<Object?>? dependencies])
→ void
-
Runs
sideEffect after every completed render of a DartFunctionComponent.
-
useImperativeHandle(dynamic ref, dynamic createHandle(), [List? dependencies])
→ void
-
Customizes the
ref value that is exposed to parent components when using forwardRef2 by setting ref.current
to the return value of createHandle.
-
useLayoutEffect(dynamic sideEffect(), [List<Object?>? dependencies])
→ void
-
Runs
sideEffect synchronously after a DartFunctionComponent renders, but before the screen is updated.
-
useMemo<T>(T createFunction(), [List? dependencies])
→ T
-
Returns a memoized version of the return value of
createFunction.
-
useReducer<TState, TAction, TInit>(TState reducer(TState state, TAction action), TState initialState)
→ ReducerHook<TState, TAction, TInit>
-
Initializes state of a DartFunctionComponent to
initialState and creates a dispatch method.
-
useReducerLazy<TState, TAction, TInit>(TState reducer(TState state, TAction action), TInit initialArg, TState init(TInit))
→ ReducerHook<TState, TAction, TInit>
-
Initializes state of a DartFunctionComponent to
init(initialArg) and creates dispatch method.
-
useRef<T>([T? initialValue])
→ Ref<T?>
-
Returns an empty mutable Ref object.
-
useRefInit<T>(T initialValue)
→ Ref<T>
-
Returns a mutable Ref object with Ref.current property initialized to
initialValue.
-
useState<T>(T initialValue)
→ StateHook<T>
-
Adds local state to a DartFunctionComponent
by returning a StateHook with StateHook.value initialized to
initialValue.
-
useStateLazy<T>(T init())
→ StateHook<T>
-
Adds local state to a DartFunctionComponent
by returning a StateHook with StateHook.value initialized to the return value of
init.
