uniapp动画onshow后失效

动画不生效，动画事件必须写在view标签上 写在div无效

<view :animation="animationData" style="background:red;height:100rpx;width:100rpx"></view>
1
export default{
  data: {
    animationData: {}
  },
  onShow: function(){
    var animation = uni.createAnimation({
      duration: 1000,
        timingFunction: 'ease',
    })

    this.animation = animation

    animation.scale(2,2).rotate(45).step()

    this.animationData = animation.export()

    setTimeout(function() {
      animation.translate(30).step()
      this.animationData = animation.export()
    }.bind(this), 1000)
  },
  methods:{
    rotateAndScale: function () {
      // 旋转同时放大
      this.animation.rotate(45).scale(2, 2).step()
      this.animationData = this.animation.export()
    },
    rotateThenScale: function () {
      // 先旋转后放大
      this.animation.rotate(45).step()
      this.animation.scale(2, 2).step()
      this.animationData = this.animation.export()
    },
    rotateAndScaleThenTranslate: function () {
      // 先旋转同时放大，然后平移
      this.animation.rotate(45).scale(2, 2).step()
      this.animation.translate(100, 100).step({ duration: 1000 })
      this.animationData = this.animation.export()
    }
  }
}