#鸿蒙通关秘籍#如何在鸿蒙中自定义Swiper组件的切换动画？

可以使用customContentTransition实现Swiper组件的自定义切换动画。开发者可以通过在transition回调中逐帧设置页面的透明度、缩放比例等属性来实现个性化动画效果。如下为代码示例：

javascript @Entry @Component struct SwiperCustomAnimationExample { private DISPLAY_COUNT: number = 2 private MIN_SCALE: number = 0.75

@State backgroundColors: Color[] = [Color.Green, Color.Blue, Color.Yellow, Color.Pink, Color.Gray, Color.Orange] @State opacityList: number[] = [] @State scaleList: number[] = [] @State translateList: number[] = [] @State zIndexList: number[] = []

aboutToAppear(): void { for (let i = 0; i < this.backgroundColors.length; i++) { this.opacityList.push(1.0) this.scaleList.push(1.0) this.translateList.push(0.0) this.zIndexList.push(0) } }

build() { Column() { Swiper() { ForEach(this.backgroundColors, (backgroundColor: Color, index: number) => { Text(index.toString()).width('100%').height('100%').fontSize(50).textAlign(TextAlign.Center) .backgroundColor(backgroundColor) .opacity(this.opacityList[index]) .scale({ x: this.scaleList[index], y: this.scaleList[index] }) .translate({ x: this.translateList[index] }) .zIndex(this.zIndexList[index]) }) } .height(300) .indicator(false) .displayCount(this.DISPLAY_COUNT, true) .customContentTransition({ timeout: 1000, transition: (proxy: SwiperContentTransitionProxy) => { if (proxy.position <= proxy.index % this.DISPLAY_COUNT || proxy.position >= this.DISPLAY_COUNT + proxy.index % this.DISPLAY_COUNT) { this.opacityList[proxy.index] = 1.0 this.scaleList[proxy.index] = 1.0 this.translateList[proxy.index] = 0.0 this.zIndexList[proxy.index] = 0 } else { if (proxy.index % this.DISPLAY_COUNT === 0) { this.opacityList[proxy.index] = 1 - proxy.position / this.DISPLAY_COUNT this.scaleList[proxy.index] = this.MIN_SCALE + (1 - this.MIN_SCALE) * (1 - proxy.position / this.DISPLAY_COUNT) this.translateList[proxy.index] = - proxy.position * proxy.mainAxisLength + (1 - this.scaleList[proxy.index]) * proxy.mainAxisLength / 2.0 } else { this.opacityList[proxy.index] = 1 - (proxy.position - 1) / this.DISPLAY_COUNT this.scaleList[proxy.index] = this.MIN_SCALE + (1 - this.MIN_SCALE) * (1 - (proxy.position - 1) / this.DISPLAY_COUNT) this.translateList[proxy.index] = - (proxy.position - 1) * proxy.mainAxisLength - (1 - this.scaleList[proxy.index]) * proxy.mainAxisLength / 2.0 } this.zIndexList[proxy.index] = -1 } } }) }.width('100%') } }

使用customContentTransition设置回调，可以实现自定义的动画效果，例如调整透明度和缩放比例等。