Building Your First Android and iOS App With React Native CLI

Setting up the React Native Command Line Interface (CLI) on macOS for Android and iOS development involves multiple steps, including configuring platform-specific settings and dependencies through Xcode and Android Studio. The process requires macOS Ventura or Sonoma, as well as tools like VS Code, Terminal, and Node. The guide focuses on building a video-calling app using Stream's React Native Video SDK, which necessitates custom native code and the React Native CLI Quickstart. Essential steps include installing Node and Watchman for MacOS, configuring Xcode for iOS, and setting up the Java Development Kit and Android Studio for Android, alongside managing necessary permissions and dependencies for camera and microphone access. Upon completing these configurations, developers can create a new React Native project and launch it on both iOS and Android devices, or simulators, while integrating features like video calling, livestreaming, and audio rooms.