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ScrollView · React Native

Component that wraps platform ScrollView while providing integration with touch locking "responder" system.

Keep in mind that ScrollViews must have a bounded height in order to work, since they contain unbounded-height children into a bounded container (via a scroll interaction). In order to bound the height of a ScrollView, either set the height of the view directly (discouraged) or make sure all parent views have bounded height. Forgetting to transfer {flex: 1} down the view stack can lead to errors here, which the element inspector makes quick to debug.

Doesn't yet support other contained responders from blocking this scroll view from becoming the responder.

<ScrollView> vs <FlatList> - which one to use?

ScrollView renders all its react child components at once, but this has a performance downside.

Imagine you have a very long list of items you want to display, maybe several screens worth of content. Creating JS components and native views for everything all at once, much of which may not even be shown, will contribute to slow rendering and increased memory usage.

This is where FlatList comes into play. FlatList renders items lazily, when they are about to appear, and removes items that scroll way off screen to save memory and processing time.

FlatList is also handy if you want to render separators between your items, multiple columns, infinite scroll loading, or any number of other features it supports out of the box.

Inherits View Props.

A React Component that will be used to render sticky headers, should be used together with stickyHeaderIndices. You may need to set this component if your sticky header uses custom transforms, for example, when you want your list to have an animated and hidable header. If a component has not been provided, the default ScrollViewStickyHeader component will be used.

iOS

When true, the scroll view bounces horizontally when it reaches the end even if the content is smaller than the scroll view itself.

iOS

When true, the scroll view bounces vertically when it reaches the end even if the content is smaller than the scroll view itself.

iOS

Controls whether iOS should automatically adjust the content inset for scroll views that are placed behind a navigation bar or tab bar/toolbar.

iOS

Controls whether the ScrollView should automatically adjust its contentInset and scrollViewInsets when the Keyboard changes its size.

iOS

Controls whether iOS should automatically adjust the scroll indicator insets. See Apple's documentation on the property.

iOS

When true, the scroll view bounces when it reaches the end of the content if the content is larger than the scroll view along the axis of the scroll direction. When false, it disables all bouncing even if the alwaysBounce* props are true.

iOS

When true, gestures can drive zoom past min/max and the zoom will animate to the min/max value at gesture end, otherwise the zoom will not exceed the limits.

iOS

When false, once tracking starts, won't try to drag if the touch moves.

iOS

When true, the scroll view automatically centers the content when the content is smaller than the scroll view bounds; when the content is larger than the scroll view, this property has no effect.

These styles will be applied to the scroll view content container which wraps all of the child views. Example:

return (
  <ScrollView contentContainerStyle={styles.contentContainer}>
  </ScrollView>
);
...
const styles = StyleSheet.create({
  contentContainer: {
    paddingVertical: 20
  }
});

iOS

The amount by which the scroll view content is inset from the edges of the scroll view.

iOS

This property specifies how the safe area insets are used to modify the content area of the scroll view. Available on iOS 11 and later.

Used to manually set the starting scroll offset.

A floating-point number that determines how quickly the scroll view decelerates after the user lifts their finger. You may also use string shortcuts "normal" and "fast" which match the underlying iOS settings for UIScrollViewDecelerationRateNormal and UIScrollViewDecelerationRateFast respectively.

• 'normal' 0.998 on iOS, 0.985 on Android.
• 'fast', 0.99 on iOS, 0.9 on Android.

iOS

When true, the ScrollView will try to lock to only vertical or horizontal scrolling while dragging.

When true, the scroll view stops on the next index (in relation to scroll position at release) regardless of how fast the gesture is. This can be used for pagination when the page is less than the width of the horizontal ScrollView or the height of the vertical ScrollView.

When true, the default JS pan responder on the ScrollView is disabled, and full control over touches inside the ScrollView is left to its child components. This is particularly useful if snapToInterval is enabled, since it does not follow typical touch patterns. Do not use this on regular ScrollView use cases without snapToInterval as it may cause unexpected touches to occur while scrolling.

Android

Sometimes a scrollview takes up more space than its content fills. When this is the case, this prop will fill the rest of the scrollview with a color to avoid setting a background and creating unnecessary overdraw. This is an advanced optimization that is not needed in the general case.

Android

Fades out the edges of the scroll content.

If the value is greater than 0, the fading edges will be set accordingly to the current scroll direction and position, indicating if there is more content to show.

When true, the scroll view's children are arranged horizontally in a row instead of vertically in a column.

iOS

The style of the scroll indicators.

• 'default' same as black.
• 'black', scroll indicator is black. This style is good against a light background.
• 'white', scroll indicator is white. This style is good against a dark background.

If sticky headers should stick at the bottom instead of the top of the ScrollView. This is usually used with inverted ScrollViews.

Determines whether the keyboard gets dismissed in response to a drag.

• 'none', drags do not dismiss the keyboard.
• 'on-drag', the keyboard is dismissed when a drag begins.

iOS Only

• 'interactive', the keyboard is dismissed interactively with the drag and moves in synchrony with the touch, dragging upwards cancels the dismissal. On Android this is not supported and it will have the same behavior as 'none'.

Android

iOS

Determines when the keyboard should stay visible after a tap.

• 'never' tapping outside of the focused text input when the keyboard is up dismisses the keyboard. When this happens, children won't receive the tap.
• 'always', the keyboard will not dismiss automatically, and the scroll view will not catch taps, but children of the scroll view can catch taps.
• 'handled', the keyboard will not dismiss automatically when the tap was handled by children of the scroll view (or captured by an ancestor).
• false, deprecated, use 'never' instead
• true, deprecated, use 'always' instead

When set, the scroll view will adjust the scroll position so that the first child that is currently visible and at or beyond minIndexForVisible will not change position. This is useful for lists that are loading content in both directions, e.g. a chat thread, where new messages coming in might otherwise cause the scroll position to jump. A value of 0 is common, but other values such as 1 can be used to skip loading spinners or other content that should not maintain position.

The optional autoscrollToTopThreshold can be used to make the content automatically scroll to the top after making the adjustment if the user was within the threshold of the top before the adjustment was made. This is also useful for chat-like applications where you want to see new messages scroll into place, but not if the user has scrolled up a ways and it would be disruptive to scroll a bunch.

Caveat 1: Reordering elements in the scrollview with this enabled will probably cause jumpiness and jank. It can be fixed, but there are currently no plans to do so. For now, don't re-order the content of any ScrollViews or Lists that use this feature.

Caveat 2: This uses contentOffset and frame.origin in native code to compute visibility. Occlusion, transforms, and other complexity won't be taken into account as to whether content is "visible" or not.

iOS

The maximum allowed zoom scale.

iOS

The minimum allowed zoom scale.

Android

Enables nested scrolling for Android API level 21+.

Called when scrollable content view of the ScrollView changes.

The handler function will receive two parameters: the content width and content height (contentWidth, contentHeight).

It's implemented using onLayout handler attached to the content container which this ScrollView renders.

Called when the momentum scroll starts (scroll which occurs as the ScrollView starts gliding).

Called when the momentum scroll ends (scroll which occurs as the ScrollView glides to a stop).

Fires at most once per frame during scrolling. The event has the following shape (all values are numbers):

js

{
  nativeEvent: {
    contentInset: {bottom, left, right, top},
    contentOffset: {x, y},
    contentSize: {height, width},
    layoutMeasurement: {height, width},
    zoomScale
  }
}

Called when the user begins to drag the scroll view.

Called when the user stops dragging the scroll view and it either stops or begins to glide.

iOS

Fires when the scroll view scrolls to top after the status bar has been tapped.

Android

Used to override default value of overScroll mode.

Possible values:

• 'auto' - Allow a user to over-scroll this view only if the content is large enough to meaningfully scroll.
• 'always' - Always allow a user to over-scroll this view.
• 'never' - Never allow a user to over-scroll this view.

When true, the scroll view stops on multiples of the scroll view's size when scrolling. This can be used for horizontal pagination.

Android

Causes the scrollbars not to turn transparent when they are not in use.

iOS

When true, ScrollView allows use of pinch gestures to zoom in and out.

A RefreshControl component, used to provide pull-to-refresh functionality for the ScrollView. Only works for vertical ScrollViews (horizontal prop must be false).

See RefreshControl.

Experimental: When true, offscreen child views (whose overflow value is hidden) are removed from their native backing superview when offscreen. This can improve scrolling performance on long lists.

When false, the view cannot be scrolled via touch interaction.

Note that the view can always be scrolled by calling scrollTo.

Limits how often scroll events will be fired while scrolling, specified as a time interval in ms. This may be useful when expensive work is performed in response to scrolling. Values ≤ 16 will disable throttling, regardless of the refresh rate of the device.

iOS

The amount by which the scroll view indicators are inset from the edges of the scroll view. This should normally be set to the same value as the contentInset.

Android

Tag used to log scroll performance on this scroll view. Will force momentum events to be turned on (see sendMomentumEvents). This doesn't do anything out of the box and you need to implement a custom native FpsListener for it to be useful.

iOS

When true, the scroll view can be programmatically scrolled beyond its content size.

iOS

When true, the scroll view scrolls to top when the status bar is tapped.

When true, shows a horizontal scroll indicator.

When true, shows a vertical scroll indicator.

When snapToInterval is set, snapToAlignment will define the relationship of the snapping to the scroll view.

Possible values:

• 'start' will align the snap at the left (horizontal) or top (vertical).
• 'center' will align the snap in the center.
• 'end' will align the snap at the right (horizontal) or bottom (vertical).

Use in conjunction with snapToOffsets. By default, the end of the list counts as a snap offset. Set snapToEnd to false to disable this behavior and allow the list to scroll freely between its end and the last snapToOffsets offset.

When set, causes the scroll view to stop at multiples of the value of snapToInterval. This can be used for paginating through children that have lengths smaller than the scroll view. Typically used in combination with snapToAlignment and decelerationRate="fast". Overrides less configurable pagingEnabled prop.

When set, causes the scroll view to stop at the defined offsets. This can be used for paginating through variously sized children that have lengths smaller than the scroll view. Typically used in combination with decelerationRate="fast". Overrides less configurable pagingEnabled and snapToInterval props.

Use in conjunction with snapToOffsets. By default, the beginning of the list counts as a snap offset. Set snapToStart to false to disable this behavior and allow the list to scroll freely between its start and the first snapToOffsets offset.

When set to true, sticky header will be hidden when scrolling down the list, and it will dock at the top of the list when scrolling up.

An array of child indices determining which children get docked to the top of the screen when scrolling. For example, passing stickyHeaderIndices={[0]} will cause the first child to be fixed to the top of the scroll view. You can also use like [x,y,z] to make multiple items sticky when they are at the top. This property is not supported in conjunction with horizontal={true}.

iOS

The current scale of the scroll view content.

Displays the scroll indicators momentarily.

tsx

scrollTo(
  options?: {x?: number, y?: number, animated?: boolean} | number,
  deprecatedX?: number,
  deprecatedAnimated?: boolean,
);

Scrolls to a given x, y offset, either immediately, with a smooth animation.

Example:

scrollTo({x: 0, y: 0, animated: true})

Note: The weird function signature is due to the fact that, for historical reasons, the function also accepts separate arguments as an alternative to the options object. This is deprecated due to ambiguity (y before x), and SHOULD NOT BE USED.

tsx

scrollToEnd(options?: {animated?: boolean});

If this is a vertical ScrollView scrolls to the bottom. If this is a horizontal ScrollView scrolls to the right.

Use scrollToEnd({animated: true}) for smooth animated scrolling, scrollToEnd({animated: false}) for immediate scrolling. If no options are passed, animated defaults to true.

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