txly-zfb-mini/components/navigator/index.axml

<view class='navigator-index {{className}}' style='{{style}}' ref='saveChildRef0'>
  <view class='block' style='height: {{titleBarHeight + statusBarHeight}}px; background: {{bgColor}}'>
    <view class='bar' style='height: {{titleBarHeight}}px; top: {{statusBarHeight}}px; line-height: {{titleBarHeight}}px'>
      <view class="flex {{titleStyle}} {{showArrow?(titleStyle+'-arrow'):''}}" onTap='antmoveAction' data-antmove-tap='back'>
        {{title}}
      </view>
    </view>
  </view>
</view>