iPhone6真机 flex下的scroll-view没有高度

<page style=“height:100%;”>

    <view style=“height:100%;”>

        <view style=“transform: translateY(-50%);position: relative;top: 50%;max-height:100%;display:flex;flex-direction: column”>

            <view style=“height:200rpx;”>header</view>

            <scroll-view style=“height: 100%;overflow-y:auto;overflow-x:hidden” scroll-y>

                <view wx:for=“{{10}}”>iPhone6看不到我</view>

            </scroll-view>

            <view style=“height:200rpx;”>footer</view>

        </view>

    </view>

</page>