Swipeable list items in React Native - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a swipeable list item in mobile apps?

A swipeable list item is a list entry that responds to a horizontal swipe gesture, revealing actions like delete or archive, making interaction faster and intuitive.

beginner

Which React Native component helps create swipeable list items?

The Swipeable component from react-native-gesture-handler allows you to add swipe gestures to list items.

intermediate

Why should you use react-native-gesture-handler for swipe gestures instead of basic touch events?

It provides better gesture recognition, smoother animations, and handles gesture conflicts well, improving user experience.

intermediate

How do you add a delete action on swipe left in a swipeable list item?

You define a function that returns a view with a delete button and pass it to the renderRightActions prop of the Swipeable component.

advanced

What accessibility considerations should you keep in mind for swipeable list items?

Ensure swipe actions are also accessible via buttons or other controls, provide clear labels, and support keyboard navigation for users who cannot swipe.

Which prop of the Swipeable component defines the view shown when swiping left?

A renderRightActions

B renderLeftActions

C onSwipeRight

D rightSwipeView

The renderRightActions prop specifies the UI shown when the user swipes the item to the left, revealing actions on the right side.

What library do you need to install to use the Swipeable component in React Native?

A react-native-animatable

B react-native-swipe-list-view

C react-native-gesture-handler

D react-native-swipeable

The Swipeable component is part of the react-native-gesture-handler library.

What is a common use case for swipeable list items?

A To scroll vertically through a list

B To reveal quick actions like delete or archive

C To zoom into images

D To open a modal window

Swipeable list items let users quickly access actions like delete or archive by swiping horizontally.

Which gesture direction usually reveals the delete action in a swipeable list item?

A Swipe left

B Swipe right

C Swipe up

D Swipe down

Swiping left on a list item typically reveals actions like delete on the right side.

How can you improve accessibility for swipeable list items?

A Disable swipe gestures

B Hide actions from screen readers

C Use only color to indicate actions

D Add buttons for actions and provide ARIA labels

Providing buttons and ARIA labels ensures users who cannot swipe can still access actions.

Explain how to implement a swipeable list item in React Native using react-native-gesture-handler.

Think about how to show buttons when the user swipes.

Describe accessibility best practices for swipeable list items in mobile apps.

Consider users who cannot perform swipe gestures.

Practice

1. What is the main purpose of using Swipeable in React Native list items?

easy

A. To allow users to swipe list items and reveal hidden actions

B. To automatically sort list items alphabetically

C. To add animations when list items are tapped

D. To disable scrolling on the list

Solution

1. Step 1: Understand Swipeable component role

   The Swipeable component enables swipe gestures on list items.

2. Step 2: Identify the effect of swiping

   Swiping reveals hidden buttons or actions like delete or edit.

3. Final Answer:

   To allow users to swipe list items and reveal hidden actions -> Option A

4. Quick Check:

   Swipeable = Reveal actions on swipe [OK]

Hint: Swipeable shows hidden buttons when you swipe list items [OK]

Common Mistakes:

• Thinking Swipeable sorts items automatically
• Confusing swipe with tap animations
• Assuming Swipeable disables scrolling

2. Which prop is used to define the buttons shown when swiping a list item to the right in Swipeable?

easy

A. renderLeftActions

B. renderRightActions

C. onSwipeRight

D. swipeButtons

Solution

1. Step 1: Recall Swipeable props for swipe actions

   renderLeftActions defines buttons shown when swiping to the right (revealing left side).

2. Step 2: Match prop to swipe direction

   Swiping to the right reveals buttons from the left side, so renderLeftActions is correct.

3. Final Answer:

   renderLeftActions -> Option A

4. Quick Check:

   Right swipe buttons = renderLeftActions [OK]

Hint: Use renderLeftActions for buttons on right swipe [OK]

Common Mistakes:

• Confusing renderRightActions with right swipe
• Using non-existent prop onSwipeRight
• Assuming swipeButtons is a valid prop

3. Given this code snippet, what will happen when the user swipes the list item to the left?

import { Swipeable } from 'react-native-gesture-handler';

function ListItem() {
  return (
     }
    >
      Message
    
  );
}

medium

A. The 'Archive' button appears when swiping left to right

B. No button appears on swipe

C. The 'Archive' button appears when swiping right to left

D. The list item deletes immediately on swipe

Solution

1. Step 1: Understand renderLeftActions behavior

   renderLeftActions shows buttons when swiping to the right (revealing left side).

2. Step 2: Analyze swipe to the left

   Swiping to the left reveals right side actions via renderRightActions, which is not provided, so no button appears.

3. Final Answer:

   No button appears on swipe -> Option B

4. Quick Check:

   Swipe left requires renderRightActions [OK]

Hint: Swipe left reveals right actions (renderRightActions) [OK]

Common Mistakes:

• Thinking renderLeftActions shows on swipe left
• Confusing the swipe direction for left actions
• Expecting immediate deletion on swipe

4. What is wrong with this code snippet that tries to add swipe actions?

import { Swipeable } from 'react-native-gesture-handler';

function Item() {
  return (
     Delete}
    >
      Item
    
  );
}

medium

A. Swipeable must wrap a View, not Text

B. renderRightActions should be a boolean, not a function

C. Missing onSwipe callback prop

D. Text component cannot be used directly as a swipe action button

Solution

1. Step 1: Check renderRightActions return type

   Swipe actions should be interactive buttons or touchable components, not plain Text.

2. Step 2: Identify correct component usage

   Using Text alone won't respond to touches; use TouchableOpacity or Button.

3. Final Answer:

   Text component cannot be used directly as a swipe action button -> Option D

4. Quick Check:

   Swipe actions need touchable components [OK]

Hint: Swipe actions must be touchable, not plain Text [OK]

Common Mistakes:

• Using plain Text instead of touchable components
• Thinking renderRightActions is a boolean
• Assuming Swipeable can't wrap Text

5. You want to create a swipeable list where swiping left reveals a 'Delete' button and swiping right reveals an 'Archive' button. Which code snippet correctly implements this behavior?

hard

A. Delete}
renderRightActions={() => Archive}
>
Item

B. }
renderRightActions={() => }
>
Item

C. }
renderRightActions={() => }
>
Item

D. }
rightActions={() => }
>
Item

Solution

1. Step 1: Match swipe directions to actions

   Swiping left means moving finger leftwards, revealing right side actions, so 'Delete' should be on right.

2. Step 2: Assign correct props

   renderRightActions shows buttons on right side (swipe left), renderLeftActions shows buttons on left side (swipe right).

3. Step 3: Check button components

   Buttons are used correctly, not plain Text.

4. Final Answer:

   renderLeftActions shows 'Archive', renderRightActions shows 'Delete' -> Option C

5. Quick Check:

   Left swipe = right actions, right swipe = left actions [OK]

Hint: Left swipe reveals right actions; right swipe reveals left actions [OK]

Common Mistakes:

• Swapping left and right actions
• Using plain Text instead of buttons
• Using wrong prop names like leftActions