<KPickerView @change="changeIndex"> 事件无响应,为何?

<KPickerView @change="changeIndex" ref="pickerview" v-on:click="changeIndex" v-model="multiArray" indicator-style="height: 40px;" style="font-size:0.5rem;width: 100%;position: relative; height: 300px;">

<KPickerViewColumn v-model="time">

<KView v-for="(item,index) in listYears" style="line-height: 40px;" :key="index" >

&nbsp;&nbsp;&nbsp;&nbsp;{{item}}

</KView>

</KPickerView>