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  • 小程序返回上一页后刷新

    经过测试,onshow在onload之后。

    在首次进入时,list中为空,在onshow中直接跳过。

    在返回上一页时,list中数据是不为空的,则需要执行onshow中的方法。

      onShow: function () {
        var that = this;
        console.log("show",that.data.list.length);
        if(that.data.list.length>0){
          that.setData({
            openid: app.globalData.openid,
            root: app.globalData.root,
            pageIndex:1
          })
          that.query(that.data.openid, that.data.pageIndex, that.data.pageSize, that.data.activeIndex,true)
        }
      },
    onLoad: function (options) {
        var that = this;
        that.setData({
          openid: app.globalData.openid,
          root: app.globalData.root
        })
        that.query(that.data.openid, that.data.pageIndex, that.data.pageSize, that.data.activeIndex,false)
      },
      query: function (openid, index, size, type,isRefesh) {
        var that = this;
        var end;
        console.log("type:"+type);
        if (type == 0) {
          end = that.data.isEnd;
        } else {
          end = that.data.isEnd1;
        }
        var isid = that.data.activeIndex;
        type = parseInt(type);
        wx.showNavigationBarLoading()
        if (end == false) {
          wx.showLoading({
            title: '正在加载中',
          })
          wx.request({
            url: app.globalData.root + "service/WeChatParent.asmx/GetMessageList",
            data: {
              openid: openid,
              type: type + 1,
              pageIndex: index,
              pageSize: size,
              key: '',
              stime: '',
              etime: ''
            },
            method: 'post',
            success: function (datas) {
              var resuJson = JSON.parse(datas.data.d);
              console.log(resuJson);
              if (resuJson.list.length == 0 ) {
                that.setData({
                  dataNull: true
                })
              } else {
                that.setData({
                  dataNull: false
                })
              }
              if (resuJson.end == true) {
                if (type == 0) {
                  that.setData({
                    isEnd: true
                  })
                } else {
                  that.setData({
                    isEnd1: true
                  })
                }
              }
              if (isid == 0) {//话机留言
                  if(isRefesh){
                    that.setData({
                      list: resuJson.list,
                      pageIndex: 1,
                    })
                  }else{
                    that.setData({
                      list: that.data.list.concat(resuJson.list),
                      pageIndex: that.data.pageIndex + 1,
                    })
                  }
              
    
              } else {
                that.setData({
                  list1: that.data.list1.concat(resuJson.list),
                  pageIndex1: that.data.pageIndex1 + 1,
                })
    
              }
              wx.hideLoading()
            }
          })
        } else {
          wx.showToast({
            title: '没有更多数据了'
          })
        }
        wx.hideNavigationBarLoading()
      },
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  • 原文地址:https://www.cnblogs.com/axu92312/p/14276681.html
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