<view class='input_wrap'>

<form report-submit bindsubmit="formSumbit">

<button class='submit' form-type="submit">发送</button>

<textarea class='input' bindinput="msgChange" placeholder="输入内容..." placeholder-style="color:#333;" value="{{msg}}" fixed="" show-confirm-bar="true" bindfocus="bindfocus"></textarea>

</form>

</view>

.input_wrap 做了position: fixed; bottom: 0px;  拉起键盘后 textarea 被压住啦？  有什么解决办法？