167 posts tagged with "React Native"

In this tutorial, we are going to give a quick introduction to React Native hooks. Hooks in React are available since the version 16.7.0-alpha. These functions allow us to use React state and a component’s lifecycle methods in a functional component. If you are familiar with React, you know that the functional component has been called as a functional stateless component. Not any more.

The app icon is one of the first production assets you should replace before submitting a React Native app to the Apple App Store or Google Play. It appears on the home screen, app stores, settings screens, notifications, search, and device launchers.

This guide explains how to replace icons in a React Native app with native iOS and Android projects.

In this tutorial we will build a React Native app that allows users to upload images and videos from their camera and photo library directly into a AWS S3 bucket. As AWS is the leader of cloud providers, a huge part of the React Native ecosystem is using AWS as the backend for their app. With the release of AWS Amplify, using AWS as backend for a React Native app has never been easier to implement.

An App Walkthrough Screen is a slider screen which allows the user to learn everything about the features of a mobile app when they open the application for the first time. We can implement this feature in a React Native application in multiple ways. In this React Native tutorial, we describe how we implemented the Walkthrough Screens in all of our React Native Templates so that you can speed up your app development by reusing our open source code.

Sign in with Apple is a common requirement for React Native apps that offer third-party login options such as Google, Facebook, LinkedIn, or Amazon. It also gives iOS users a privacy-friendly authentication option that works well with Firebase Authentication.

Optional imports are useful when a React Native app has platform-specific code, feature-gated screens, optional assets, or native modules that should only load in one environment. They are also easy to misuse. Metro still needs to know what files can be bundled, so arbitrary runtime strings are not a good import strategy.

Push notifications are one of the highest-leverage features in a React Native app, but they are also easy to get wrong. Firebase Cloud Messaging can deliver messages to Android and iOS, but iOS still depends on APNs, modern Android requires runtime notification permission, and every production app needs a trusted backend to send notifications.

This guide focuses on the current architecture: the mobile app requests permission and stores device tokens; Firebase owns delivery; your backend sends messages with Firebase Admin SDK or FCM HTTP v1.

Phones, tablets, and foldables have status bars, notches, camera cutouts, rounded corners, gesture home indicators, and navigation bars. A React Native screen that looks fine on one simulator can still hide content under system UI on another device.

The modern solution is react-native-safe-area-context. The older SafeAreaView exported from React Native core is deprecated and should not be the default choice for new work.

Deep linking lets a React Native app open directly to a specific screen from an external URL. It is useful for passwordless login links, push notifications, marketing campaigns, referral invites, order tracking, chat threads, and content shared from the web.

Instagram-style filters are a product feature, not just an image effect. A good React Native implementation lets users pick or capture a photo, preview filters quickly, export the selected result, upload it safely, and recover when a filter library or device GPU behaves differently across platforms.

Older tutorials often recommend a single native filter package as the default. For production apps, choose the filter stack deliberately and test maintenance, export behavior, Android/iOS parity, and upload integration before committing to it.

React Native projects collect several kinds of local state while you work: Metro cache, Watchman watches, node_modules, CocoaPods, Gradle build output, and Xcode DerivedData. Cleaning all of them at once can fix some painful build issues, but it can also create new problems if you delete lockfiles or update native dependencies accidentally.

This guide shows a safer cleanup order. Start with the smallest cache reset that matches the symptom, then move down the checklist only if the problem remains.

Drawing directions in a React Native app usually starts with a simple map polyline. A straight polyline is enough for connecting two coordinates visually, but real turn-by-turn-looking routes need a routing service such as Google Routes API, Mapbox Directions, HERE Routing, or a backend you control.