Pull-to-refresh in React Native - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is pull-to-refresh in mobile apps?

Pull-to-refresh is a gesture where you drag the screen down to refresh the content, like updating a list of messages or news.

beginner

Which React Native component helps implement pull-to-refresh?

The RefreshControl component is used with scrollable views like ScrollView or FlatList to add pull-to-refresh functionality.

intermediate

How do you know when the user is pulling to refresh in React Native?

You track a boolean state like refreshing that becomes true when the user pulls down and triggers the refresh action.

beginner

Why should you set refreshing back to false after refreshing?

Setting refreshing to false stops the loading spinner and lets the user know the refresh is done.

intermediate

What is a simple way to add pull-to-refresh to a list in React Native?

Use FlatList with the refreshControl prop set to a RefreshControl component that manages the refreshing state and onRefresh callback.

Which component do you use to add pull-to-refresh in React Native?

A RefreshControl

B TouchableOpacity

C TextInput

D Button

The RefreshControl component is designed for pull-to-refresh functionality.

What prop do you pass to RefreshControl to know when to stop refreshing?

A isRefreshing

B loading

C refreshState

D refreshing

The refreshing prop is a boolean that controls the spinner visibility.

Where do you usually add RefreshControl in React Native?

A Inside Button component

B Inside ScrollView or FlatList's refreshControl prop

C Inside View component without scroll

D Inside Text component

RefreshControl works with scrollable components like ScrollView or FlatList.

What happens if you forget to set refreshing to false after refresh?

A The spinner keeps spinning and user thinks loading continues

B The app crashes

C Nothing happens, refresh ends automatically

D The list clears

The spinner stays visible, confusing the user.

Pull-to-refresh is best described as:

A Tapping a button to refresh

B Swiping left to delete

C Dragging down to update content

D Pinching to zoom

Pull-to-refresh means dragging down to refresh content.

Explain how to implement pull-to-refresh in a React Native FlatList.

Think about the components and state you need to show and stop the spinner.

Why is it important to manage the refreshing state properly in pull-to-refresh?

Consider what happens if the spinner never stops.