# Explicit Animation

Name	Description
animateTo(value: AnimationOption, event: ()=> void) : void	Provides a transition animation when the status changes due to the closure code. event specifies the closure function that displays the dynamic effect. The system automatically inserts the transition animation if the status changes in the closure function.

Name

Description

animateTo(value: AnimationOption, event: ()=> void) : void

Provides a transition animation when the status changes due to the closure code.

event specifies the closure function that displays the dynamic effect. The system automatically inserts the transition animation if the status changes in the closure function.

## AnimationOption Object - Attributes

Name	Type	Default Value	Description
duration	number	1000	Animation duration, in ms.
tempo	number	1.0	Animation playback speed. A larger value indicates faster animation playback, and a smaller value indicates slower animation playback. The value 0 means that there is no animation.
curve	Curve \| Curves	Linear	Animation curve.
delay	number	0	Delay of animation playback, in ms. By default, the playback is not delayed.
iterations	number	1	Number of times that the animation is played. By default, the animation is played once. The value -1 indicates that the animation is played for an unlimited number of times.
playMode	PlayMode	Normal	Animation playback mode. By default, the animation is played from the beginning after the playback is complete.

- APIs

Name	Description
onFinish() => void	Callback invoked when the animation playback is complete.

## Example ``` @Entry @Component struct AnimateToExample { @State widthSize: number = 200 @State heightSize: number = 100 private flag: boolean = true build() { Column() { Button('click me') .width(this.widthSize) .height(this.heightSize) .backgroundColor(0x317aff) .onClick((event: ClickEvent) => { // Animation configuration for the width and height attributes of the Button component if (this.flag) { animateTo({ duration: 1000, // Animation duration tempo: 0.5, // Playback speed curve: Curve.EaseInOut, // Animation curve delay: 200, // Animation delay iterations: 1, // Number of playback times playMode: PlayMode.Normal, // Animation mode onFinish: () => { console.info('play end') } }, () => { this.widthSize = 100 this.heightSize = 50 }) } else { animateTo({ duration: 200, // Animation duration curve: Curve.Ease, // Animation curve delay: 200, // Animation delay iterations: 1, // Number of playback times playMode: PlayMode.Normal, // Animation mode onFinish: () => { console.info('play end') } }, () => { this.widthSize = 200 this.heightSize = 100 }) } this.flag = !this.flag }) }.width('100%').margin({ top: 5 }) } } ``` ![](figures/animateto.gif)