真机上外边框圆形(border-radius: 50%;)循环动画时会有一帧变方形?
比如这样:
<view class="border anim"></view>
.border{width: 100rpx; height:100rpx; border-radius: 50%; border:#FB5E57 solid 1rpx;background-color:#FB5E57;}
.anim{background-color:#FFF; animation: boxShadow 1.5s ease-in-out infinite alternate;}
@keyframes boxShadow{
from {box-shadow:0em 0em 0em #FB5E57;}
to {box-shadow:0em 0em 1em #FB5E57;}
}