tk-mini-program/unpackage/dist/build/mp-weixin/pages/index/chat/messageComponent/customPKMessage.wxml

<view class="custom-pk-message data-v-39536460" bindtap="{{b}}"><image class="data-v-39536460" src="{{a}}" mode="scaleToFill" style="width:100%;height:100%"/></view>