How do I build an onboarding flow in Expo?

To build an onboarding flow in Expo, use a combination of React Navigation and the onboarding library. Set up multiple screens that guide users through essential features, allowing them to skip or revisit steps later.

What libraries do I need for onboarding in Expo?

To create onboarding screens, you can use @react-navigation/native for navigation and react-native-swiper or react-native-snap-carousel to implement the screen-swiping effects. Versions as of now would be @react-navigation/native@6.0.0 and react-native-swiper@1.0.0 respectively.

How many onboarding screens should I have?

Having 3 to 5 onboarding screens is generally optimal. This count allows you to showcase key features without overwhelming users. Each screen should focus on one aspect of your app, such as its main functionalities or benefits.

What information should I collect during onboarding?

Typically, it’s best to gather minimal information initially, such as the user’s name and email. You can always prompt for additional data later in the app usage. This makes the onboarding experience smoother and less intrusive.

How do I keep onboarding screens editable?

To keep onboarding screens editable, implement state management using React’s useState or useContext so that you can dynamically alter prompts as your app's copy changes. For instance, updating a welcome message based on feedback or app updates.

How can I implement deep linking in onboarding flows?

To implement deep linking, ensure that your navigation setup in @react-navigation supports deep links. This is useful for directing users to specific onboarding screens after they click links from emails or social media.

import { NavigationContainer } from '@react-navigation/native';
import { createStackNavigator } from '@react-navigation/stack';

const Stack = createStackNavigator();

function App() {
  return (
    <NavigationContainer>
      <Stack.Navigator>
        <Stack.Screen name="Welcome" component={WelcomeScreen} />
        <Stack.Screen name="Feature1" component={Feature1Screen} />
        <Stack.Screen name="Feature2" component={Feature2Screen} />
      </Stack.Navigator>
    </NavigationContainer>
  );
}

Why is my onboarding lagging on mid-range Android?

On mid-range Android devices, complex animations or excessive images may cause lag during the onboarding flow. Optimize images and limit the complexity of animations to ensure a smoother experience. Consider using lighter animations with react-native-reanimated for improved performance.

How can I track user progress during onboarding?

To track user progress, implement a simple state or context that saves whether a user completed certain screens. Store this information in AsyncStorage to prioritize your content based on where users drop off.

import AsyncStorage from '@react-native-async-storage/async-storage';

async function storeOnboardingComplete() {
  try {
    await AsyncStorage.setItem('@onboarding_complete', 'true');
  } catch (e) {
    // saving error
  }
}

How do I test the onboarding flow on multiple devices?

Use Expo to test on different devices and screen sizes. You can use the Expo Go app to run your project on both iOS and Android devices to ensure consistent behavior and layout.

What’s next after onboarding?

Once users complete the onboarding flow, direct them to the app's main functionality. Ensure that a smooth transition occurs by utilizing the navigation stack appropriately. Create a seamless user experience by eliminating distractions after the initial guidance, focusing on user engagement instead.