React Native Cookbook - Second Edition

How to do it...

1. Let's start by opening the photos/reducer.js file and importing all of the action types we defined in the previous recipe, as follows:

import {  FETCH_PHOTOS,  ADD_PHOTO,  REMOVE_PHOTO} from './actions';

2. We'll define an initial state object for the state in this reducer. It has a photos property initialized to an empty array for the currently loaded photos, as follows:

const initialState = () => return { photos: []};

3. We can now define the reducer function. It'll receive two parameters, the current state and the action that has been dispatched, as follows:

export default (state = initialState, action) => {  // Defined in next steps 
} 

React Native components can also have a state object, but that is an entirely separate ...