React Native Interview Questions

How to use firebase in react native?

Post Views: 49,335 Firebase is a popular tool for mobile and web app development platform. It provides many services to help you in building fast and high-quality apps, grow your user base, and earn more money without managing infrastructure. It is a powerful Database as a Service (DBaaS) tool, which provides a scalable cloud database to store and sync data for client and server-side development. Some of the key features of firebase are authentication, Real-time database, cloud messaging, crash reporting,…

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How to use Axios in the React Native?

Post Views: 49,310 Axios is a popular library for making HTTP requests from the browser. It allows us to make GET, POST, PUT, and DELETE requests from the browser. Therefore, React Native uses Axios to make requests to an API, return data from the API, and then perform actions with that data in our React Native app. We can use Axios by adding the Axios plugin to our project using the following command. # Yarn $ yarn add axios #…

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What is API in React Native?

Post Views: 49,306 An API or Application Programming Interface is a software intermediary that lets in two applications to communicate with each other without having to know how they are implemented. Sometimes it is thought of as a contract, with documentation that represents an agreement between two parties. For example, each time when you use an app in the mobile like Facebook, it sends a message, or when you see the weather on your phone, these are the usage of…

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How to update React Native with the latest version?

Post Views: 49,304 It is very important to upgrade the existing React Native with the latest version, which gives you access to more APIs, views, developer tools, and other latest features. The following steps need to be performed for upgrading the React Native with the latest versions. 1. Upgrade your expo project in package.json with the latest version of react-native, react, and expo package. 2. Set the latest version of SDK, which is compatible with the latest react-native in your…

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Why React Native use Redux?

Post Views: 49,300 Redux is a state container for JavaScript applications. It is a state management tool, which helps you to write applications that behave consistently, can run in a different environment, and are easy to test. React Native use Redux because it allows developers to use one application state as a global state and interact easily with the state from any React component. It can combine with any framework or library.

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What does React Native Packager do in the React Native?

Post Views: 49,289 The React Native Packager performs the following functionalities: The React Native Packager combines all the JavaScript code of your application into a single file and then translate any of the JavaScript code that your device won’t understand like JSX. It also converts the assets (e.g., PNG file) used in your project into objects, which can be displayed by an Image component.

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What is meant by Gesture Responder System?

Post Views: 49,290 It is an internal system of React Native, which is responsible for managing the lifecycle of gestures in the system. React Native provides several different types of gestures to the users, such as tapping, sliding, swiping, and zooming. The responder system negotiates these touch interactions. Usually, it is used with Animated API. Also, it is advised that they never create irreversible gestures.

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What is the storage system in the React Native?

Post Views: 49,277 React Native storage is a simple, unencrypted, asynchronous, persistent system, which stores the data globally in the app. It stores data in the form of a key-value pair. React Native provides AsyncStorage class to store data globally. Using the AsyncStorage class, we need to have a data backup and synchronization class. It is because data saved on the device is not permanent and not encrypted.

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