I uploaded 3 pages of related code here. My problem is this: I press the Pick Country button and select a country, but I can't display my screen the phoneCode parameter of the country I selected. I'm working with flutter_riverpod…
According to the React official documentation, setState should only trigger a re-render if the current value differs from the new one. However, I've encountered a scenario where my code enters an infinite loop, even though the same value is being…
Above the first Page that shows, I show a message that the user can swipe left to go to the next page. In onPageChanged I set a bool to dismiss the message and call setState. When I swipe to page…
I have the following frontend: AuthContext.js: const { createContext, useState, useContext } = require("react"); const AuthContext = createContext(); export function useAuth() { return useContext(AuthContext); } export function AuthProvider({ children }) { const [auth, setAuth] = useState(); return ( <AuthContext.Provider value={{…
I have called setState() to update the objects of the class MyErrorBox, but Flutter does not run the build function for those objects. I am new to Flutter and coding in general. The MyText class in the code below is…
Im trying to reassign the value of scscf before sending it to container but its always undefined Here are my code flow constructor(){ this.state = {scscf: null} Data init on componentWillReceiveProps componentWillReceiveProps(nextProps) { this.setState({scscf: nextProps.currentItem.scscf}) } My onchange handle onChangeSCSCF(atrr,…
Using Bloc pattern to show a list of data fetched from rest api. Now I want to update the list on listview on button click. When I click on button, it fetches the data but it does not update the…
I have the following code: function App() { const [appData, setAppData] = useState(initialAppDataValue); const [test, setTest] = useState(""); // outside useEffect if(!DataProviderService.isInitialized){ fetchData(); } // inside useEffect /*useEffect(() => { fetchData(); }, []);*/ function fetchData(){ DataProviderService.getAppData().then((data) => { setAppData(data); setTest("abc");…
I'm trying to do a conditional state update in react where some keys are only updated if another value changes (used to reset some values for settings to null if certain modes are selected). This pattern used to work fine…
May i know how to set state value after get value from function? const getValueFunction = () => { dispatch(fetchData(setData, 1, pages.current, rowsNumber)); } useEffect(() => { pages.current = 1; getValueFunction(); const obj = data.reduce((r, { setCode }) => {…