native

Provides an array of custom actions available for accessibility.

A Boolean value indicating whether the accessibility elements contained within this accessibility element are hidden to the screen reader.

An accessibility hint helps users understand what will happen when they perform an action on the accessibility element when that result is not obvious from the accessibility label.

https://reactnative.dev/docs/accessibility#accessibilityignoresinvertcolorsios

Overrides the text that's read by the screen reader when the user interacts with the element. By default, the label is constructed by traversing all the children and accumulating all the Text nodes separated by space.

Identifies the element that labels the element it is applied to. When the assistive technology focuses on the component with this props, the text is read aloud. The value should should match the nativeID of the related element.

By using the accessibilityLanguage property, the screen reader will understand which language to use while reading the element's label, value and hint. The provided string value must follow the BCP 47 specification (https://www.rfc-editor.org/info/bcp47). https://reactnative.dev/docs/accessibility#accessibilitylanguage-ios

When accessibilityShowsLargeContentViewer is set, this string will be used as title for the large content viewer. https://reactnative.dev/docs/accessibility#accessibilitylargecontenttitle

Indicates to accessibility services whether the user should be notified when this view changes. Works for Android API >= 19 only.

Blocks the user from interacting with the component through keyboard while still allowing screen reader to interact with it if this View is still accessible.

Accessibility Role tells a person using either VoiceOver on iOS or TalkBack on Android the type of element that is focused on.

A Boolean value that indicates whether or not to show the item in the large content viewer. Available on iOS 13.0+ https://reactnative.dev/docs/accessibility#accessibilityshowslargecontentviewer

Accessibility State tells a person using either VoiceOver on iOS or TalkBack on Android the state of the element currently focused on.

Represents the current value of a component. It can be a textual description of a component's value, or for range-based components, such as sliders and progress bars, it contains range information (minimum, current, and maximum).

A Boolean value indicating whether VoiceOver should ignore the elements within views that are siblings of the receiver.

When true, indicates that the view is an accessibility element. By default, all the touchable elements are accessible.

alias for accessibilityState

see https://reactnative.dev/docs/accessibility#accessibilitystate

A value indicating whether the accessibility elements contained within this accessibility element are hidden.

Alias for accessibilityLabel https://reactnative.dev/docs/view#accessibilitylabel https://github.com/react/react-native/issues/34424

Identifies the element that labels the element it is applied to. When the assistive technology focuses on the component with this props, the text is read aloud. The value should should match the nativeID of the related element.

Indicates to accessibility services whether the user should be notified when this view changes. Works for Android API >= 19 only.

Views that are only used to layout their children or otherwise don't draw anything may be automatically removed from the native hierarchy as an optimization. Set this property to false to disable this optimization and ensure that this View exists in the native view hierarchy.

Setting to false prevents direct children of the view from being removed from the native view hierarchy, similar to the effect of setting collapsable={false} on each child.

Whether this View should be focusable with a non-touch input device, eg. receive focus with a hardware keyboard.

(Apple TV only) May be set to true to force the Apple TV focus engine to move focus to this view.

This defines how far a touch event can start away from the view. Typical interface guidelines recommend touch targets that are at least 30 - 40 points/density-independent pixels. If a Touchable view has a height of 20 the touchable height can be extended to 40 with hitSlop={{top: 10, bottom: 10, left: 0, right: 0}} NOTE The touch area never extends past the parent view bounds and the Z-index of sibling views always takes precedence if a touch hits two overlapping views.

Used to reference react managed views from native code.

[Android] Controlling if a view fires accessibility events and if it is reported to accessibility services.

(Apple TV only) When set to true, this view will be focusable and navigable using the Apple TV remote.

Used to reference react managed views from native code.

Whether this view needs to rendered offscreen and composited with an alpha in order to preserve 100% correct colors and blending behavior. The default (false) falls back to drawing the component and its children with an alpha applied to the paint used to draw each element instead of rendering the full component offscreen and compositing it back with an alpha value. This default may be noticeable and undesired in the case where the View you are setting an opacity on has multiple overlapping elements (e.g. multiple overlapping Views, or text and a background).

Rendering offscreen to preserve correct alpha behavior is extremely expensive and hard to debug for non-native developers, which is why it is not turned on by default. If you do need to enable this property for an animation, consider combining it with renderToHardwareTextureAndroid if the view contents are static (i.e. it doesn't need to be redrawn each frame). If that property is enabled, this View will be rendered off-screen once, saved in a hardware texture, and then composited onto the screen with an alpha each frame without having to switch rendering targets on the GPU.

When accessible is true, the system will try to invoke this function when the user performs an accessibility custom action.

When accessible is true, the system will invoke this function when the user performs the escape gesture (scrub with two fingers).

When accessible is true, the system will try to invoke this function when the user performs accessibility tap gesture.

Callback that is called when the view is blurred.

Note: This will only be called if the view is focusable.

Callback that is called when the view is focused.

Note: This will only be called if the view is focusable.

Invoked on mount and layout changes with

{nativeEvent: { layout: {x, y, width, height}}}.

When accessible is true, the system will invoke this function when the user performs the magic tap gesture.

Called for every touch move on the View when it is not the responder: does this view want to "claim" touch responsiveness?

onStartShouldSetResponder and onMoveShouldSetResponder are called with a bubbling pattern, where the deepest node is called first. That means that the deepest component will become responder when multiple Views return true for *ShouldSetResponder handlers. This is desirable in most cases, because it makes sure all controls and buttons are usable.

However, sometimes a parent will want to make sure that it becomes responder. This can be handled by using the capture phase. Before the responder system bubbles up from the deepest component, it will do a capture phase, firing on*ShouldSetResponderCapture. So if a parent View wants to prevent the child from becoming responder on a touch start, it should have a onStartShouldSetResponderCapture handler which returns true.

If the View returns true and attempts to become the responder, one of the following will happen:

The View is now responding for touch events. This is the time to highlight and show the user what is happening

The user is moving their finger

Something else is the responder right now and will not release it

Fired at the end of the touch, ie "touchUp"

The responder has been taken from the View. Might be taken by other views after a call to onResponderTerminationRequest, or might be taken by the OS without asking (happens with control center/ notification center on iOS)

Something else wants to become responder. Should this view release the responder? Returning true allows release

Does this view want to become responder on the start of a touch?

onStartShouldSetResponder and onMoveShouldSetResponder are called with a bubbling pattern, where the deepest node is called first. That means that the deepest component will become responder when multiple Views return true for *ShouldSetResponder handlers. This is desirable in most cases, because it makes sure all controls and buttons are usable.

However, sometimes a parent will want to make sure that it becomes responder. This can be handled by using the capture phase. Before the responder system bubbles up from the deepest component, it will do a capture phase, firing on*ShouldSetResponderCapture. So if a parent View wants to prevent the child from becoming responder on a touch start, it should have a onStartShouldSetResponderCapture handler which returns true.

In the absence of auto property, none is much like CSS's none value. box-none is as if you had applied the CSS class:

.box-none { pointer-events: none; } .box-none * { pointer-events: all; }

box-only is the equivalent of

.box-only { pointer-events: all; } .box-only * { pointer-events: none; }

But since pointerEvents does not affect layout/appearance, and we are already deviating from the spec by adding additional modes, we opt to not include pointerEvents on style. On some platforms, we would need to implement it as a className anyways. Using style or not is an implementation detail of the platform.

This is a special performance property exposed by RCTView and is useful for scrolling content when there are many subviews, most of which are offscreen. For this property to be effective, it must be applied to a view that contains many subviews that extend outside its bound. The subviews must also have overflow: hidden, as should the containing view (or one of its superviews).

Whether this view should render itself (and all of its children) into a single hardware texture on the GPU.

On Android, this is useful for animations and interactions that only modify opacity, rotation, translation, and/or scale: in those cases, the view doesn't have to be redrawn and display lists don't need to be re-executed. The texture can just be re-used and re-composited with different parameters. The downside is that this can use up limited video memory, so this prop should be set back to false at the end of the interaction/animation.

Indicates to accessibility services to treat UI component like a specific role.

Enables the view to be screen reader focusable, not keyboard focusable.

Whether this view should be rendered as a bitmap before compositing.

On iOS, this is useful for animations and interactions that do not modify this component's dimensions nor its children; for example, when translating the position of a static view, rasterization allows the renderer to reuse a cached bitmap of a static view and quickly composite it during each frame.

Rasterization incurs an off-screen drawing pass and the bitmap consumes memory. Test and measure when using this property.

Indicates whether this View should be focusable with a non-touch input device, eg. receive focus with a hardware keyboard. See https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex for more details.

Supports the following values:

• 0 (View is focusable)
• -1 (View is not focusable)

Used to locate this view in end-to-end tests.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 1.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 2.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 2.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 0.05.

Provides an array of custom actions available for accessibility.

A Boolean value indicating whether the accessibility elements contained within this accessibility element are hidden to the screen reader.

An accessibility hint helps users understand what will happen when they perform an action on the accessibility element when that result is not obvious from the accessibility label.

https://reactnative.dev/docs/accessibility#accessibilityignoresinvertcolorsios

Overrides the text that's read by the screen reader when the user interacts with the element. By default, the label is constructed by traversing all the children and accumulating all the Text nodes separated by space.

Identifies the element that labels the element it is applied to. When the assistive technology focuses on the component with this props, the text is read aloud. The value should should match the nativeID of the related element.

By using the accessibilityLanguage property, the screen reader will understand which language to use while reading the element's label, value and hint. The provided string value must follow the BCP 47 specification (https://www.rfc-editor.org/info/bcp47). https://reactnative.dev/docs/accessibility#accessibilitylanguage-ios

When accessibilityShowsLargeContentViewer is set, this string will be used as title for the large content viewer. https://reactnative.dev/docs/accessibility#accessibilitylargecontenttitle

Indicates to accessibility services whether the user should be notified when this view changes. Works for Android API >= 19 only.

Blocks the user from interacting with the component through keyboard while still allowing screen reader to interact with it if this View is still accessible.

Accessibility Role tells a person using either VoiceOver on iOS or TalkBack on Android the type of element that is focused on.

A Boolean value that indicates whether or not to show the item in the large content viewer. Available on iOS 13.0+ https://reactnative.dev/docs/accessibility#accessibilityshowslargecontentviewer

Accessibility State tells a person using either VoiceOver on iOS or TalkBack on Android the state of the element currently focused on.

Represents the current value of a component. It can be a textual description of a component's value, or for range-based components, such as sliders and progress bars, it contains range information (minimum, current, and maximum).

A Boolean value indicating whether VoiceOver should ignore the elements within views that are siblings of the receiver.

When true, indicates that the view is an accessibility element. By default, all the touchable elements are accessible.

alias for accessibilityState

see https://reactnative.dev/docs/accessibility#accessibilitystate

A value indicating whether the accessibility elements contained within this accessibility element are hidden.

Alias for accessibilityLabel https://reactnative.dev/docs/view#accessibilitylabel https://github.com/react/react-native/issues/34424

Identifies the element that labels the element it is applied to. When the assistive technology focuses on the component with this props, the text is read aloud. The value should should match the nativeID of the related element.

Indicates to accessibility services whether the user should be notified when this view changes. Works for Android API >= 19 only.

Views that are only used to layout their children or otherwise don't draw anything may be automatically removed from the native hierarchy as an optimization. Set this property to false to disable this optimization and ensure that this View exists in the native view hierarchy.

Setting to false prevents direct children of the view from being removed from the native view hierarchy, similar to the effect of setting collapsable={false} on each child.

Whether this View should be focusable with a non-touch input device, eg. receive focus with a hardware keyboard.

(Apple TV only) May be set to true to force the Apple TV focus engine to move focus to this view.

This defines how far a touch event can start away from the view. Typical interface guidelines recommend touch targets that are at least 30 - 40 points/density-independent pixels. If a Touchable view has a height of 20 the touchable height can be extended to 40 with hitSlop={{top: 10, bottom: 10, left: 0, right: 0}} NOTE The touch area never extends past the parent view bounds and the Z-index of sibling views always takes precedence if a touch hits two overlapping views.

Used to reference react managed views from native code.

[Android] Controlling if a view fires accessibility events and if it is reported to accessibility services.

(Apple TV only) When set to true, this view will be focusable and navigable using the Apple TV remote.

Used to reference react managed views from native code.

Whether this view needs to rendered offscreen and composited with an alpha in order to preserve 100% correct colors and blending behavior. The default (false) falls back to drawing the component and its children with an alpha applied to the paint used to draw each element instead of rendering the full component offscreen and compositing it back with an alpha value. This default may be noticeable and undesired in the case where the View you are setting an opacity on has multiple overlapping elements (e.g. multiple overlapping Views, or text and a background).

Rendering offscreen to preserve correct alpha behavior is extremely expensive and hard to debug for non-native developers, which is why it is not turned on by default. If you do need to enable this property for an animation, consider combining it with renderToHardwareTextureAndroid if the view contents are static (i.e. it doesn't need to be redrawn each frame). If that property is enabled, this View will be rendered off-screen once, saved in a hardware texture, and then composited onto the screen with an alpha each frame without having to switch rendering targets on the GPU.

When accessible is true, the system will try to invoke this function when the user performs an accessibility custom action.

When accessible is true, the system will invoke this function when the user performs the escape gesture (scrub with two fingers).

When accessible is true, the system will try to invoke this function when the user performs accessibility tap gesture.

Callback that is called when the view is blurred.

Note: This will only be called if the view is focusable.

Callback that is called when the view is focused.

Note: This will only be called if the view is focusable.

Invoked on mount and layout changes with

{nativeEvent: { layout: {x, y, width, height}}}.

When accessible is true, the system will invoke this function when the user performs the magic tap gesture.

Called for every touch move on the View when it is not the responder: does this view want to "claim" touch responsiveness?

onStartShouldSetResponder and onMoveShouldSetResponder are called with a bubbling pattern, where the deepest node is called first. That means that the deepest component will become responder when multiple Views return true for *ShouldSetResponder handlers. This is desirable in most cases, because it makes sure all controls and buttons are usable.

However, sometimes a parent will want to make sure that it becomes responder. This can be handled by using the capture phase. Before the responder system bubbles up from the deepest component, it will do a capture phase, firing on*ShouldSetResponderCapture. So if a parent View wants to prevent the child from becoming responder on a touch start, it should have a onStartShouldSetResponderCapture handler which returns true.

If the View returns true and attempts to become the responder, one of the following will happen:

The View is now responding for touch events. This is the time to highlight and show the user what is happening

The user is moving their finger

Something else is the responder right now and will not release it

Fired at the end of the touch, ie "touchUp"

The responder has been taken from the View. Might be taken by other views after a call to onResponderTerminationRequest, or might be taken by the OS without asking (happens with control center/ notification center on iOS)

Something else wants to become responder. Should this view release the responder? Returning true allows release

Does this view want to become responder on the start of a touch?

onStartShouldSetResponder and onMoveShouldSetResponder are called with a bubbling pattern, where the deepest node is called first. That means that the deepest component will become responder when multiple Views return true for *ShouldSetResponder handlers. This is desirable in most cases, because it makes sure all controls and buttons are usable.

However, sometimes a parent will want to make sure that it becomes responder. This can be handled by using the capture phase. Before the responder system bubbles up from the deepest component, it will do a capture phase, firing on*ShouldSetResponderCapture. So if a parent View wants to prevent the child from becoming responder on a touch start, it should have a onStartShouldSetResponderCapture handler which returns true.

In the absence of auto property, none is much like CSS's none value. box-none is as if you had applied the CSS class:

.box-none { pointer-events: none; } .box-none * { pointer-events: all; }

box-only is the equivalent of

.box-only { pointer-events: all; } .box-only * { pointer-events: none; }

But since pointerEvents does not affect layout/appearance, and we are already deviating from the spec by adding additional modes, we opt to not include pointerEvents on style. On some platforms, we would need to implement it as a className anyways. Using style or not is an implementation detail of the platform.

This is a special performance property exposed by RCTView and is useful for scrolling content when there are many subviews, most of which are offscreen. For this property to be effective, it must be applied to a view that contains many subviews that extend outside its bound. The subviews must also have overflow: hidden, as should the containing view (or one of its superviews).

Whether this view should render itself (and all of its children) into a single hardware texture on the GPU.

On Android, this is useful for animations and interactions that only modify opacity, rotation, translation, and/or scale: in those cases, the view doesn't have to be redrawn and display lists don't need to be re-executed. The texture can just be re-used and re-composited with different parameters. The downside is that this can use up limited video memory, so this prop should be set back to false at the end of the interaction/animation.

Indicates to accessibility services to treat UI component like a specific role.

Enables the view to be screen reader focusable, not keyboard focusable.

Whether this view should be rendered as a bitmap before compositing.

On iOS, this is useful for animations and interactions that do not modify this component's dimensions nor its children; for example, when translating the position of a static view, rasterization allows the renderer to reuse a cached bitmap of a static view and quickly composite it during each frame.

Rasterization incurs an off-screen drawing pass and the bitmap consumes memory. Test and measure when using this property.

Indicates whether this View should be focusable with a non-touch input device, eg. receive focus with a hardware keyboard. See https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex for more details.

Supports the following values:

• 0 (View is focusable)
• -1 (View is not focusable)

Used to locate this view in end-to-end tests.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 1.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 2.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 2.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 0.05.

Provides an array of custom actions available for accessibility.

A Boolean value indicating whether the accessibility elements contained within this accessibility element are hidden to the screen reader.

An accessibility hint helps users understand what will happen when they perform an action on the accessibility element when that result is not obvious from the accessibility label.

https://reactnative.dev/docs/accessibility#accessibilityignoresinvertcolorsios

Overrides the text that's read by the screen reader when the user interacts with the element. By default, the label is constructed by traversing all the children and accumulating all the Text nodes separated by space.

Identifies the element that labels the element it is applied to. When the assistive technology focuses on the component with this props, the text is read aloud. The value should should match the nativeID of the related element.

By using the accessibilityLanguage property, the screen reader will understand which language to use while reading the element's label, value and hint. The provided string value must follow the BCP 47 specification (https://www.rfc-editor.org/info/bcp47). https://reactnative.dev/docs/accessibility#accessibilitylanguage-ios

When accessibilityShowsLargeContentViewer is set, this string will be used as title for the large content viewer. https://reactnative.dev/docs/accessibility#accessibilitylargecontenttitle

Indicates to accessibility services whether the user should be notified when this view changes. Works for Android API >= 19 only.

Blocks the user from interacting with the component through keyboard while still allowing screen reader to interact with it if this View is still accessible.

Accessibility Role tells a person using either VoiceOver on iOS or TalkBack on Android the type of element that is focused on.

A Boolean value that indicates whether or not to show the item in the large content viewer. Available on iOS 13.0+ https://reactnative.dev/docs/accessibility#accessibilityshowslargecontentviewer

Accessibility State tells a person using either VoiceOver on iOS or TalkBack on Android the state of the element currently focused on.

Represents the current value of a component. It can be a textual description of a component's value, or for range-based components, such as sliders and progress bars, it contains range information (minimum, current, and maximum).

A Boolean value indicating whether VoiceOver should ignore the elements within views that are siblings of the receiver.

When true, indicates that the view is an accessibility element. By default, all the touchable elements are accessible.

alias for accessibilityState

see https://reactnative.dev/docs/accessibility#accessibilitystate

A value indicating whether the accessibility elements contained within this accessibility element are hidden.

Alias for accessibilityLabel https://reactnative.dev/docs/view#accessibilitylabel https://github.com/react/react-native/issues/34424

Identifies the element that labels the element it is applied to. When the assistive technology focuses on the component with this props, the text is read aloud. The value should should match the nativeID of the related element.

Indicates to accessibility services whether the user should be notified when this view changes. Works for Android API >= 19 only.

Views that are only used to layout their children or otherwise don't draw anything may be automatically removed from the native hierarchy as an optimization. Set this property to false to disable this optimization and ensure that this View exists in the native view hierarchy.

Setting to false prevents direct children of the view from being removed from the native view hierarchy, similar to the effect of setting collapsable={false} on each child.

Hint shown inside the empty child created for a toggle heading.

Whether this View should be focusable with a non-touch input device, eg. receive focus with a hardware keyboard.

(Apple TV only) May be set to true to force the Apple TV focus engine to move focus to this view.

This defines how far a touch event can start away from the view. Typical interface guidelines recommend touch targets that are at least 30 - 40 points/density-independent pixels. If a Touchable view has a height of 20 the touchable height can be extended to 40 with hitSlop={{top: 10, bottom: 10, left: 0, right: 0}} NOTE The touch area never extends past the parent view bounds and the Z-index of sibling views always takes precedence if a touch hits two overlapping views.

Used to reference react managed views from native code.

Maximum rendered width of image and video blocks, in logical pixels.

[Android] Controlling if a view fires accessibility events and if it is reported to accessibility services.

(Apple TV only) When set to true, this view will be focusable and navigable using the Apple TV remote.

Used to reference react managed views from native code.

Whether this view needs to rendered offscreen and composited with an alpha in order to preserve 100% correct colors and blending behavior. The default (false) falls back to drawing the component and its children with an alpha applied to the paint used to draw each element instead of rendering the full component offscreen and compositing it back with an alpha value. This default may be noticeable and undesired in the case where the View you are setting an opacity on has multiple overlapping elements (e.g. multiple overlapping Views, or text and a background).

Rendering offscreen to preserve correct alpha behavior is extremely expensive and hard to debug for non-native developers, which is why it is not turned on by default. If you do need to enable this property for an animation, consider combining it with renderToHardwareTextureAndroid if the view contents are static (i.e. it doesn't need to be redrawn each frame). If that property is enabled, this View will be rendered off-screen once, saved in a hardware texture, and then composited onto the screen with an alpha each frame without having to switch rendering targets on the GPU.

When accessible is true, the system will try to invoke this function when the user performs an accessibility custom action.

When accessible is true, the system will invoke this function when the user performs the escape gesture (scrub with two fingers).

When accessible is true, the system will try to invoke this function when the user performs accessibility tap gesture.

Fired when a block that opens the actions sheet (e.g. a divider) is tapped.

Callback that is called when the view is blurred.

Note: This will only be called if the view is focusable.

Fired whenever the native text layout's own content height changes, in dp -- lets the RN side size this view to its true content (e.g. tall images) instead of clipping it.

Callback that is called when the view is focused.

Note: This will only be called if the view is focusable.

Invoked on mount and layout changes with

{nativeEvent: { layout: {x, y, width, height}}}.

When accessible is true, the system will invoke this function when the user performs the magic tap gesture.

Called for every touch move on the View when it is not the responder: does this view want to "claim" touch responsiveness?

onStartShouldSetResponder and onMoveShouldSetResponder are called with a bubbling pattern, where the deepest node is called first. That means that the deepest component will become responder when multiple Views return true for *ShouldSetResponder handlers. This is desirable in most cases, because it makes sure all controls and buttons are usable.

However, sometimes a parent will want to make sure that it becomes responder. This can be handled by using the capture phase. Before the responder system bubbles up from the deepest component, it will do a capture phase, firing on*ShouldSetResponderCapture. So if a parent View wants to prevent the child from becoming responder on a touch start, it should have a onStartShouldSetResponderCapture handler which returns true.

If the View returns true and attempts to become the responder, one of the following will happen:

The View is now responding for touch events. This is the time to highlight and show the user what is happening

The user is moving their finger

Something else is the responder right now and will not release it

Fired at the end of the touch, ie "touchUp"

The responder has been taken from the View. Might be taken by other views after a call to onResponderTerminationRequest, or might be taken by the OS without asking (happens with control center/ notification center on iOS)

Something else wants to become responder. Should this view release the responder? Returning true allows release

Does this view want to become responder on the start of a touch?

onStartShouldSetResponder and onMoveShouldSetResponder are called with a bubbling pattern, where the deepest node is called first. That means that the deepest component will become responder when multiple Views return true for *ShouldSetResponder handlers. This is desirable in most cases, because it makes sure all controls and buttons are usable.

However, sometimes a parent will want to make sure that it becomes responder. This can be handled by using the capture phase. Before the responder system bubbles up from the deepest component, it will do a capture phase, firing on*ShouldSetResponderCapture. So if a parent View wants to prevent the child from becoming responder on a touch start, it should have a onStartShouldSetResponderCapture handler which returns true.

Optional glyph used by the native proof view when a page has no fetched icon.

In the absence of auto property, none is much like CSS's none value. box-none is as if you had applied the CSS class:

.box-none { pointer-events: none; } .box-none * { pointer-events: all; }

box-only is the equivalent of

.box-only { pointer-events: all; } .box-only * { pointer-events: none; }

But since pointerEvents does not affect layout/appearance, and we are already deviating from the spec by adding additional modes, we opt to not include pointerEvents on style. On some platforms, we would need to implement it as a className anyways. Using style or not is an implementation detail of the platform.

This is a special performance property exposed by RCTView and is useful for scrolling content when there are many subviews, most of which are offscreen. For this property to be effective, it must be applied to a view that contains many subviews that extend outside its bound. The subviews must also have overflow: hidden, as should the containing view (or one of its superviews).

Whether this view should render itself (and all of its children) into a single hardware texture on the GPU.

On Android, this is useful for animations and interactions that only modify opacity, rotation, translation, and/or scale: in those cases, the view doesn't have to be redrawn and display lists don't need to be re-executed. The texture can just be re-used and re-composited with different parameters. The downside is that this can use up limited video memory, so this prop should be set back to false at the end of the interaction/animation.

Indicates to accessibility services to treat UI component like a specific role.

Enables the view to be screen reader focusable, not keyboard focusable.

Whether this view should be rendered as a bitmap before compositing.

On iOS, this is useful for animations and interactions that do not modify this component's dimensions nor its children; for example, when translating the position of a static view, rasterization allows the renderer to reuse a cached bitmap of a static view and quickly composite it during each frame.

Rasterization incurs an off-screen drawing pass and the bitmap consumes memory. Test and measure when using this property.

Indicates whether this View should be focusable with a non-touch input device, eg. receive focus with a hardware keyboard. See https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex for more details.

Supports the following values:

• 0 (View is focusable)
• -1 (View is not focusable)

Used to locate this view in end-to-end tests.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 1.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 2.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 2.0.

(Apple TV only) May be used to change the appearance of the Apple TV parallax effect when this view goes in or out of focus. Defaults to 0.05.

Whether a to-do block is checked.

Whether a toggle header's child content is collapsed in the editor.

Number of columns in a column_list block.

Zero-based nesting depth used by the proof editor's structural actions.

Optional media metadata retained for audio blocks.

Optional icon: a page icon for link_to_page, or a callout's emoji.

Inline formatting ranges contained by this block's text.

Whether a heading block is a collapsible toggle header.

URL opened when the page reference is tapped.

Target block id for a "insertAbove", "insertBelow", "duplicateBlock", "deleteBlock", or "replaceImage" action -- these act on the identified block directly rather than on the current selection, since the block-actions sheet can be opened for a block (e.g. a divider or an image) that never receives the text cursor.

Block color for a "color" action. Omit (or clear) for the default color.

Number of columns for a "columns" action. Defaults to 2 when omitted.

Audio metadata for an insertAudio or replaceAudio action.

Replacement label for a "link" action. Defaults to the selected text.

Heading level for a "heading" action. Defaults to 1 when omitted.

Inline formatting mark for a "format" action.

Whether a "heading" action inserts a toggle header.

Block type for a "turnInto" action.

URL for a "link" action.