How to Optimize speed of React Native application and FalstList - react-native

I'm using React-Native-CLI where I have a screen that is using ScrollView and FlatList and multiple APIs and FlatList are inside the ScrollView that I think slowing my app. So, how can I resolve this problem..?

Related

React Native FlatListProps.getItemLayout do not load more items

I am working with a large list in React native, I using FlatList to show it.
But when I use getItemLayout to improve performance, the list doesn't load more elements behind.
If I remove the getItemLayout then FlatList still works as usual.
I am using React Native 0.66.5.
This is Snack Expo Example

React Native Animated Horizontal Scrolling

I am beginner in React native and I want to implement the horizontal scrolling list like this.
Design. Can anyone let me know about the references/libraries that I can use to design this in React Native Expo.
You can use snap carousal, or FlatList with snapping enabled

Building my app with Expo causes extra padding on the top of my app's screen (React Native)

I'm building my first app with React Native and I'm using Expo to build my app. My problem is whenever I build my app there comes this extra white space / padding on top of my app. I have tried using SafeAreaView with flex: 1 but it doesn't fix the issue. Has anyone had this kind of issue before?
Managed to solve it using StatusBar component inside my header title component
See:
https://reactnavigation.org/docs/headers/

How to achieve this animation in react-native

I want to achieve this effect in react-native, Is there a component that achieves this or can this can be done using Animated View ?
I want to only to create the custom tab component, with this sliding animation when switching between them
If you mean TopTabs and use react-navigation to navigate around your app you can use the TopTabNavigator from react-native. Otherwise this can be done with React Animated

Lottie Splash Screen with Expo - animated splash screen with Expo

I am looking for a way to create an animated Splash Screen in React Native project using Expo.
I found Lottie as a solution, but the only info I can get about it is about the animations within the app itself - is there ANY possible solution that would allow a creation of an animated splash screen with Expo? For now, I have only a static png file.
There is an example provided in the Expo docs here:
https://github.com/expo/examples/tree/master/with-splash-screen
Although it's technically not an animated splash screen, but a way to automatically hide the static splash screen (which would be the first frame of your animation) and then immediately switch to playing the animation once the app is loaded. I'm doing it this way and it works well enough.
This NPM module seems to work in a similar fashion so maybe you could use that
https://www.npmjs.com/package/react-native-animated-splash-screen
But it's still not a native animated splash screen which I don't think is possible using even vanilla React Native let alone Expo.
Here I am using this module for custom animated splash screen using expo react native project. I hope it will work for you too.
Here is the module link: click here
Let me know if you need any other help.