March 2017
Beginner to intermediate
500 pages
9h 41m
English
The majority of your time developing iOS and Android applications using React Native will be spent in a simulator. A simulator is a virtual machine that runs the mobile OS that you want to test your app in, on your desktop. If you had to validate every change on the actual hardware that you want to target, it would be both very time-consuming and very costly to implement. In this section, we'll get you set up with simulators for iOS and Android.
If you don't already have Xcode installed, you can download and install it for free from the app store or https://developer.apple.com/. You'll need to do this before you're able to simulate any iOS devices that can run your React Native app.
You'll need a Mac and OSX if ...
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