Best React Native Interview Questions and answers

Every Company want best employee for themself and you want to be part of that company so these React Native Interview Questions you must know. They are gonna ensure your placement.

React Native Interview Questions

1. React Native Fundamentals

For cracking React Native job interview you must know the fundamentals of react native. What is react native and why use react native.

What is React Native?

React native is a JavaScript framework for native app development. In this framework you just have to write code once in react native and then use that on both android and ios platforms.

Why React Native?

React native is a Hybrid or cross-platform mobile app development framework. So we just have to write code for once it saves time. Now comes the question there are many other hybrid framework why choose react native.

React Native vs Ionic which one to use?

React native final outcome was a real native app, but the ionic app is just a webpage with html and css in a webview. So ionic does not contain native feel of the app. Native libraries or functionality work flawlessly in react native. But ionic sometimes causes problems.

React Native vs flutter which one to choose

React native use react but flutter uses dart which is a little bit different for so much developers to adopt. Many people know Javascript can easily go into react native but not on flutter. React native has a huge community but Flutter is new so it’s community is growing. So right now react native is more stable because it comes first.

2. React Native Components

React native has some inbuilt components which are essential for use. You must have a basic knowledge of them if you want to secure your job.

These are the general components which are used by many apps. These are the basic core of react native apps.

Basic Components –

These are the general components which are used by many apps. These are the basic core of react native apps. Gonna explain them with examples in detail for that just click on them.

View – This is the basic ui element of react native like we have div in html.
Text – For every text in react native we use this component.
Image – This component is used to add images in the app.
TextInput – In forms for the form input we use this component.
ScrollView – For vertical and horizontal scroll view.
StyleSheet – This is used to add css styles in react native apps.

2. User interface (UI) –

Basic ui components for the react native app. View, ScrollView and StyleSheet are also part of it but they are the most used components so they are separated into basic components.

Button – These are the buttons which work on touch. Same like html buttons.
Switch – These are for boolean input like truth and false.

3. List Views –

In ScrollView we have whole data loaded, so on a small list we can use that. But for advanced lists we use List Views. For example on pagination or infinite scroll these are useful.

FlatList – This is used for a scrollable list for long content.
SectionList – This is a new component, if we have a hybrid big list item, the whole section works as an item in SectionList.

4. Native Components –

These are the components which are platform specific. Some work on Android and some on ios which i explain in detail.

Ios Component – ActionSheetIos
Android Component – BackHandler, DrawerLayoutAndroid, PermissionAndroid, ToastAndroid.

5. Other Components – these components are used depending on the requirement of the app. ActivityIndicator and alert are most used in these.

For other core components and advance react native components click below

React Native Components

3. React Native Libraries

React native developers create other libraries and make them public for users like us. For complete out tasks we must know about these libraries so these can be very helpful. It is gonna make your first impression very infectious.

These are the most famous react native libraries which you need to know for your interview.

React native firebase
React native vector icons
React native elements
React navigation
React native maps
React native webview
React native redux
React native image picker
React native model
React native video
React native camera
React native splash screens
React native gesture handler
React native fbads
React native swiper
React native datepicker
React native image crop picker
React native router flux
React native lifecycle
React native share
React native storage
Native base
React native code push
React native linear gradient
React native charts
React native scrollable tab view

React Native Libraries

4. Tasks, practical and other important questions

After the verbal round the main thing comes is the practical test or simple tasks. for example