删除列表中某一项不刷新列表

            var idxall = e.currentTarget.dataset.idxall;
            // var idx = e.currentTarget.dataset.idx;
            var datas = that.data.activity_list;
            var arrList = [];
            // 如果没有这之间的代码，会有bug
            var tempAniamtion = that.animation.left('0rpx').step({ duration: 1 });
            that.data.AnimatingName = '';
            that.setData({
              AnimatingName: '',
              deleteAnimation: tempAniamtion.export()
            })
            // 如果没有这之间的代码，会有bug
            datas.splice(idxall, 1);
            console.log(datas)
            for (var i = 0; i < datas.length;i++){
              arrList.push(datas[i])
            }
            that.setData({
              activity_list: arrList,
            })