setInterval(function () {

      n=n+1;

      if(n!=4){

        this.animation.rotate(45 * (n)).step();

        if(this.data.down){

          this.animation.height('250px').step();

          this.animation.width('170px').step();

        }else{

          this.animation.height('220px').step();

          this.animation.width('150px').step();

        }

      }

      this.setData({

        animationData4: this.animation.export()

      })

    }.bind(this), 1200);

<view class="hua4" animation="{{animationData4}}"></view>

  <view class="hua" animation="{{animationData}}" ></view>

  <view class="hua1" animation="{{animationData1}}" ></view>

  <view class="hua2" animation="{{animationData2}}"></view>

  <view class="hua3" animation="{{animationData3}}"></view>