实现常见分类栏左右滑动（使用flex布局）

        <scroll-view class="scroll-view_H" scroll-x="true" bindscroll="scroll" style="width: 100%;margin:25rpx 0;">

            <view class="flex-column-between" style="height:300rpx;flex-wrap:wrap;">

                <view class="flex-column-center" style="height:50%;margin:0 49rpx;" data-id="{{item.category_id}}"

                    data-name="{{item.category_name}}" bindtap="onCategory" wx:for="{{categoryData}}" wx:key="this">

                    <image class="category_img" src="{{item.image[0].file_path}}"></image>

                    <view class="category_name">{{item.category_name}}</view>

                </view>

            </view>

        </scroll-view>

效果图：