微信小程序实现长按删除图片的示例

<view class="uploader__files">
   <block wx:for="{{images}}" wx:key="{{item.id}}" >
      <view class="uploader__file" bindlongpress="deleteImage" data-index="{{index}}">
        <image mode="aspectFill" class="uploader__img" src="{{item.path}}" />
      </view>
   </block>
</view>

deleteImage: function (e) {
  var that = this;
  var images = that.data.images;
  var index = e.currentTarget.dataset.index;//获取当前长按图片下标
  wx.showModal({
   title: '提示',
   content: '确定要删除此图片吗？',
   success: function (res) {
    if (res.confirm) {
     console.log('点击确定了');
     images.splice(index, 1);
    } else if (res.cancel) {
      console.log('点击取消了');
      return false;    
     }
    that.setData({
     images
    });
   }
  })
 }