How to await loading data before mapping?
I'm trying to map some data that I have stored in an array (the screenshot below), but I can't seem to access it, because it is loaded asynchronously. How could I await the data? Is there a way to do...
View ArticleHow can I resolve the error "the expected type comes from property...
In my code here, I am trying to create a Stack Navigator.This is the stack navigator I have made.import React from 'react';import { View, Text, StyleSheet } from 'react-native';import {...
View ArticleImplementation of Facebook ads for an react-native app (iOS, android)
I wanted to promote app on Facebook by adding Facebook ads (like.. Myntra and flip-card did) in react-native for iOS and android.
View ArticleReact Native not showing an error screen for all Typescript errors
I recently created a bare Typescript ReactNative project and I started noticing that the simulator throws an error only for certain typescript errors, but for others it compiles without any issue. I am...
View ArticleuseState does not set value in react under `useCallBack` [duplicate]
I have one local variable that is controlled by useState that should be set after calling useCallback. However, after debug I do not see the info is set. Looking for different solution in...
View ArticleUsing useState hook with TypeScript
I wanted to know if I it's possible to use inheritance while setting the useState type. What I mean is if have an interface like that:interface PackageItem { id: number, name: string, address:...
View Articlehow to use setXXXX from useState in callBack
I am not really sure where I did wrong. I have one customized Hook that called with providing inputValue. and one local variable value initial Value is 0. so after clicking button from component level,...
View Articlereact native : How to catch the user when he exits the screen after he has...
In my example I present a flatlist of items with a checkbox.My goal is:1 . When the user marked one of the checkbox or more then he tried to exit the screen if backwards or he tried to move to another...
View ArticleHow to properly type useNavigation in React Navigation?
I'm trying to type the useNavigation from React Navigation. I would like to be able to pass only the name of the route, but I get an error unless I also pass props for that route.Following the...
View Articlepassing function as props generates an error in React Native(onPress is not a...
I'm trying to trigger some action in parent component from child component and I'm using props for that. One of the props of the child is a function which updates parent's state when a button is...
View ArticleHow do I type check React Navigator's Stack Navigation routes when the Stack...
I am currently using React Navigation for an app, I am relatively new to TS so need some suggestions on how to do this.My problem is that I am copying React Navigations suggested type checking for the...
View ArticleReact Native TouchableHighlight onFocus onBlur
I am creating a menu for an Android TV, the Menu expands when it get focus, but when moving from one menu item to the other I get a flicker because I can't find a way to make the menu focus independent...
View Articlewhat does the syntax `??` mean in javascript ES6/ES7? [duplicate]
I recently came across this syntax ??. Does this do the same operation that a ternary operator does?<Text> You are selecting {city?.name ?? 'none'} : {street?.name ?? 'none'}</Text>If no,...
View ArticleReact Native Change List background color onPress
I want to change the background color of the only Item I select from the listcurrently I am able to change the background color by assigning the color depending on a propactiveColor = props.name ===...
View ArticleGenerate times (as strings) for every 10 minutes from current time in JavaScript
In my scenario, I am trying to generate a time from current time to previous 60 min, each numbers 10 minutes difference. For example my current time is 11 then I want to generate like this: 10.30,...
View ArticleIs it a bad practice to pass props by spreading an object immediately defined
I know we can pass an object as props to a child in React by spreading an object which has the same keys as the expected props:<SummaryPage {...parentProps} currentPeriodType={currentPeriodType}...
View ArticleReact createRef not assignable to type MutableRefObject in React Native...
I am using react-native-actions-sheet v0.51.0 which recently added Typescript support:export default function MyFunc(){ const actionSheetRef = createRef<ActionSheet>() useEffect(() => {...
View ArticleHow to decrease current time minutes 10 interval for each using Typescript?
In Myscenario, I am trying to generate the time list with 10 minutes intervals. I am using below code but not able to achieve exactly. Also, below code it is giving 24 hrs format but I need to achieve...
View ArticleFetch seems to wait for a previous fetch to finish
I have a really weird situation in react-native. When I trigger a long running fetch (POST to upload a photo) it seems that the ones I do after (GET to fetch data for exemple) are waiting for the...
View ArticleuseState set does not update right away in react
I have one question regarding to my customized useCallBack that I really have no idea how I should fix it. Under my hook useValueChange, I use one local variable prevValue to store the state of input...
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