Native components

Most React Native components are cross-platform; they work on both iOS and Android operating systems. However, there are a few components that are restricted to one platform or the other. The convention is to suffix platform-specific component names with the name of the platform. For example, TabBarIOS is an iOS-only navigational component. The dominant reason that this component and other platform-specific components are limited to one platform has to do with the accepted user interface conventions on that platform. In this case, a tabbed navigational interface is very common on iOS applications, but is not considered a best practice on Android.

Before we dive in, let's set up our new project. We'll follow the same procedure outlined in Chapter 2, Saying Hello World in React Native. In the terminal, we will run the following command:

react-native init RNNYT

Since our application is becoming more complex than the one discussed in Chapter 2, Saying Hello...