//return this.vvimgv(url); 这样直接 是可以浏览图片的 放到网络里面 等success后执行浏览图片就一直加载中，开发工具正常，
  
      
         //console.log(url);
        app.najax({
            url: url,
            header: {},
            data: {},
            beforeSend:true,
            //ishowe:true,
            //complete:true,
            //cislogin:true,
            success: (res) => {
                wx.hideLoading();
                if(res.ret!=0){
                    this.vvimgv(url);
                }else{
                                        //iPhone真机 就一直加载中
                    wx.showModal({
                        title: '提示',
                        content: res.msg,
                        success (res) {
                          if (res.confirm) {
                            //console.log('用户点击确定')
                          } else if (res.cancel) {
                            //console.log('用户点击取消')
                          }
                        }
                    })
                    //iPhone真机 就一直加载中，换wx.showtoast提示也是
                    /*wx.showToast({
                        title: res.msg,
                        icon: 'none',
                        duration: 2000
                    })*/
                }
            }
        });
    },

    vvimgv(url){
        url='https://***.com/'+url+'&vv='+new Date().getTime();
        //console.log(url);
        wx.previewImage({
            current: url, // 当前显示图片的http链接
            urls: [url] // 需要预览的图片http链接列表
        })
    },