Sticky Item

An interactive sticky item inspired by Facebook Stories.

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Installation

yarn add @gorhom/sticky-item
# or
npm install @gorhom/sticky-item

Also, you need to install react-native-reanimated, react-native-gesture-handler & react-native-svg, and follow theirs installation instructions.

Usage

...
import StickyItemFlatList from '@gorhom/sticky-item';

// dummy data
const data = [...Array(20)]
  .fill(0)
  .map((_, index) => ({ id: `item-${index}` }));

// configs
const ITEM_WIDTH = 90;
const ITEM_HEIGHT = 150;
const STICKY_ITEM_WIDTH = 24;
const STICKY_ITEM_HEIGHT = 24;
const STICKY_ITEM_BACKGROUNDS = ['#222', '#000'];
const SEPARATOR_SIZE = 8;
const BORDER_RADIUS = 10;

const StickyItemView = ({
  x,
  threshold,
  itemWidth,
  itemHeight,
  stickyItemWidth,
  stickyItemHeight,
  separatorSize,
  isRTL,
}) => {

  const amazingAnimation = {
    // here you add your custom interactive animation
    // based on the animated value `x`
  }

  return <Animated.View style={amazingAnimation} />
}

const App = () => {
  // methods
  const handleStickyItemPress = () => Alert.alert('Sticky Item Pressed');

  // render
  const renderItem = ({ item, index}) => (
    <View
      key={`item-${index}`}
      style={{
        backgroundColor: 'red',
        width: ITEM_WIDTH,
        height: ITEM_HEIGHT,
      }}
    />
  )
  return (
    <StickyItemFlatList
      itemWidth={ITEM_WIDTH}
      itemHeight={ITEM_HEIGHT}
      separatorSize={SEPARATOR_SIZE}
      borderRadius={BORDER_RADIUS}
      stickyItemWidth={STICKY_ITEM_WIDTH}
      stickyItemHeight={STICKY_ITEM_HEIGHT}
      stickyItemBackgroundColors={STICKY_ITEM_BACKGROUNDS}
      stickyItemContent={StickyItemView}
      onStickyItemPress={handleStickyItemPress}
      data={data}
      renderItem={renderItem}
    />
  )
}

export default App

Props

name	description	required	type	default
itemWidth	Item's width.	YES	number
itemHeight	Item's height.	YES	number
separatorSize	FlatList's separator width, * if you provide ItemSeparatorComponent, you will need to set separatorSize.	NO*	number	10
borderRadius	Item & sticky border radius.	NO	number	15
stickyItemActiveOpacity	Sticky item's active opacity.	YES	number	0.25
stickyItemWidth	Sticky item's width.	YES	number
stickyItemHeight	Sticky item's height.	YES	number
stickyItemBackgroundColors	Sticky item's two background colors, one when sticky item is extended another when it's minimize.	YES	string[]
stickyItemContent	Sticky item's content component.	YES	ReactNode
isRTL	FlatList' layout direction.	NO	boolean	false
onStickyItemPress	Callback when sticky item gets pressed.	NO	function
...FlatList Props	React Native FlatList props.	NO	FlatList

To Do

• Write a detailed step-by-step instruction to create sticky interactive animation.
• Add more examples.
• Add vertical support ?.

Built With ❤️

• react-native-reanimated
• react-native-gesture-handler
• react-native-redash
• react-native-svg
• @react-native-community/bob

Author

• Mo Gorhom

License

MIT

Liked the library? 😇

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