写微信小程序的返单时,长按删除图片

长按删除图片,

deleteImage:function(e){

  var that = this;

  var files1 = that.data.files1;

  var picPaths = that.data.picPaths;

  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) {

      files1.splice(index, 1);

      picPaths.splice(index, 1);

    } else if (res.cancel) {

      return false;

    }

    that.setData({

      files1: files1,

      picPaths: picPaths

    });

    }

  })

}

 开始没加

that.setData({

      files1: files1,

      picPaths: picPaths

    });

这段,修改完图片数组页面没有变,setdata之后就好了