I’m currently working on a Bumble-like swipe system so I can swipe horizontally (thanks to an Animated.View and a PanResponder so I can move my view wherever I want), and vertically (because my view is longer than the height of my screen). After a long day of search, I finally found a solution which per…
Tag: react-native
Can’t set state in js react-native
Getting error while trying to setState in React Native. Code Error TypeError: undefined is not an object (evaluating ‘_this.setState’) Answer useState Hook Functional components don’t have access to setState method but useState hook. useState hook works by defining the name of value, e.g. fo…
Firestore data not displaying in my flatlist?
I am trying to display the posts of whoever a user is following: First, I query firestore and get the list of all the users the current user is following For each user in “following”, I get their posts I order their posts by data created, using a javascript sort function Here is the code: The issu…
change parent state from child
I want to change the parent state from the child but I can access the callback function just once Answer Try this:
How to change the child state component from parent in functional component
I have created a Count down timer component and I have a Button near this component and I want when users click on this button, resets the timer and for doing this I should change the child state I found the solution for changing parent state from the child but I don’t find the solution to this can it b…
Native Module cannot be null (ios) – Expo
I am developing a Expo-managed (not bare) mobile application. I recently ran into this issue: it crashes on start on ios. and I understand that this has to do with some of my packages requiring ios native modules, therefor I have to eject before I can use this package. However, my goal here is not to eject bu…
Paginating data causing unusual behavior?
I am displaying “global posts” on one of my tabs. Currently, there are only 11 posts in the database: In the app Some of the posts are being duplicated, and I have no idea why these SPECIFIC posts are being duplicated, as it seems to me like it is happening at random. Here is the code for how I pa…
Recommendations for developing webview content on Android?
I’ve got a webview component that loads some html and javascript. The html + javascript is fairly large, and is compiled using webpack into a single page (html, javascript and css is all in one document). I’m having trouble figuring out a reasonably efficient approach to developing my web content,…
Cannot upload app to appstoreconnect cause “UIWebView” is still being used – ITMS-90809
So i am using React Native to develop the app and trying to upload the app to TestFlight via AppStoreConnect. Everytime i upload i get an email from apple: ITMS-90809: Deprecated API Usage – New apps that use UIWebView are no longer accepted. Instead, use WKWebView for improved security and reliability …
Getting location from another file using Promise in react native with react-native-geolocation-service
I’m trying to make a helper function to get the current location of the user, but the result of my promise is undefined. This function is working and I can retrieve my coordinates : But when I call my function here, I get undefined : What am I doing wrong? Answer As written, getUserLocation() does not r…