React Native Cookbook - Second Edition

How it works...

When defining a native view, as we did with the ButtonViewManager class, it must extend SimpleViewManager and render a type that extends View. In our recipe, we rendered a Button view, and we used the @ReactProp annotation for defining properties. When we need to communicate back to the JavaScript layer, we fire an event from the native component, which we implemented in step 9 of this recipe.

In step 12, we created an onChange listener, which will execute the event handler passed in from the Android layer (event.nativeEvent.message).

Regarding the use of the nativeOnly option on step 13, from the React Native documents:

Sometimes you'll have some special properties that you need to expose for the native component, but don't ...