wxmini/pages/piano/wallpaper/wallpaper.wxml

<view class="container">
  <nav-bar bind:goBack="_goBack" nav-bgc-class="ex-nav-bgc-class" nav-title-class="ex-nav-title-class" ex-back-pre="ex-back-pre" navbar-data='{{navbarData}}'></nav-bar>
  <view wx:if="{{topImg.pic}}" class="img_section" bind:tap="imageTopTap">
    <image src="{{topImg.pic}}" class="select_img"></image>
    <!-- <canvas wx:if="{{showCropImg}}" class="canvas_img" canvas-id="imageCanvas"></canvas> -->
    <image src="../../../images/common/icon_sel.png" class="select_icon"></image>
  </view>
  <view class="grid-container">
    <block wx:for="{{imageList}}" wx:key="index" wx:for-item="item" wx:for-index="index">
      <image class="device_img" src="{{item.pic}}" mode="aspectFill" bind:tap="imageTap" data-image="{{item}}" />
    </block>
  </view>
  <view class="footer" bind:tap="footerTap">
    <image src="../../../images/common/icon_add.png" mode="aspectFill" />
    <view>上传图片</view>
  </view>
</view>