- 当前 Bug 的表现（可附上截图）

在安卓上对 scroll-view 无法下拉而且无法触发下拉事件

- 预期表现

与ios表现一致，可以使用scroll-view 进行下拉并且触发下拉事件

- 复现路径

- 提供一个最简复现 Demo

<scroll-view scroll-y="true" style='height:{{css.pageHeight}}px;' upper-threshold="-80" scroll-with-animation="true" bindscrolltoupper="refreshPage" scroll-into-view="{{pageData.scrollId}}" data-id='scroll'>

<!-- <ll-listtips state="{{ajaxData.listState.listData}}"></ll-listtips> -->

<view class='list-wrap'>

<view class='list-item' wx:for="{{ajaxData.listData}}" wx:for-index="index" wx:for-item="item" wx:key="{{index}}">

<view class='list-item-time tc hf'>

<view class='list-item-time-text' wx:if='{{item.isTime}}'>{{item.createTime}}</view>

</view>

<view class="list-item-content flex -c-top {{item.userId != pageData.userId ? 'list-item-content-right':''}}">

<view class="list-item-content-head img-box {{item.userId != pageData.userId ? 'list-item-content-head-right':''}}">

<navigator url="{{pageData.channelId == 1? '':'/pages/Letter/TaUserDetails?userId=' + item.userId}}">

<image src='{{item.avatarUrl}}' class='list-item-content-head-img'></image>

</navigator>

</view>

<view class="list-item-content-main fg1  {{item.userId != pageData.userId ? 'list-item-content-head-right' :''}}">

<view class="{{item.userId != pageData.userId ? 'list-item-content-main-icon-right' :'list-item-content-main-icon'}} img-box">

<image src="../../images/{{item.userId != pageData.userId?'ic-arrow-right-new.png':'ic-arrow-left.png'}}" class='ic-arrow-left'>

</image>

</view>

<view class="list-item-content-main-text text">

{{item.content}}

</view>

</view>

</view>

</view>

</view>

<view id="wang" class="list-bottom"></view>

</scroll-view>

<view class='bar-wrap'>

<view class='bar-operation'>

<input type='text' class='bar-operation-btn' value='{{pageData.content}}' maxlength='1000' placeholder='输入内容' placeholder-style="color: #999;" bindconfirm='Event' data-id='input' confirm-type='send'></input>

</view>

</view>