LayoutAnimation
Automatically animates views to their new positions when the next layout happens.
A common way to use this API is to call it before updating the state hook in functional components and calling setState
in class components.
Note that in order to get this to work on Android you need to set the following flags via UIManager
:
if (Platform.OS === 'android') {
if (UIManager.setLayoutAnimationEnabledExperimental) {
UIManager.setLayoutAnimationEnabledExperimental(true);
}
}
Exampleβ
Reference
Methodsβ
configureNext()
β
static configureNext(config, onAnimationDidEnd?)
Schedules an animation to happen on the next layout.
Parameters:β
Name | Type | Required | Description |
---|---|---|---|
config | object | Yes | See config description below. |
onAnimationDidEnd | function | No | Called when the animation finished. Only supported on iOS. |
The config
parameter is an object with the keys below. create
returns a valid object for config
, and the Presets
objects can also all be passed as the config
.
duration
in millisecondscreate
, optional config for animating in new viewsupdate
, optional config for animating views that have been updateddelete
, optional config for animating views as they are removed
The config that's passed to create
, update
, or delete
has the following keys:
type
, the animation type to useproperty
, the layout property to animate (optional, but recommended forcreate
anddelete
)springDamping
(number, optional and only for use withtype: Type.spring
)initialVelocity
(number, optional)delay
(number, optional)duration
(number, optional)
create()
β
static create(duration, type, creationProp)
Helper that creates an object (with create
, update
, and delete
fields) to pass into configureNext
. The type
parameter is an animation type, and the creationProp
parameter is a layout property.
Example usage:
- Function Component
- Class Component
Propertiesβ
Typesβ
An enumeration of animation types to be used in the create
method, or in the create
/update
/delete
configs for configureNext
. (example usage: LayoutAnimation.Types.easeIn
)
Types |
---|
spring |
linear |
easeInEaseOut |
easeIn |
easeOut |
keyboard |
Propertiesβ
An enumeration of layout properties to be animated to be used in the create
method, or in the create
/update
/delete
configs for configureNext
. (example usage: LayoutAnimation.Properties.opacity
)
Properties |
---|
opacity |
scaleX |
scaleY |
scaleXY |
Presetsβ
A set of predefined animation configs to pass into configureNext
.
Presets | Value |
---|---|
easeInEaseOut | create(300, 'easeInEaseOut', 'opacity') |
linear | create(500, 'linear', 'opacity') |
spring | { duration: 700, create: { type: 'linear', property: 'opacity' }, update: { type: 'spring', springDamping: 0.4 }, delete: { type: 'linear', property: 'opacity' } } |
easeInEaseOut()
β
Calls configureNext()
with Presets.easeInEaseOut
.
linear()
β
Calls configureNext()
with Presets.linear
.
spring()
β
Calls configureNext()
with Presets.spring
.
Example usage:
- Function Component
- Class Component