void Handle_ItemAppearing(object sender, Xamarin.Forms.ItemVisibilityEventArgs e)
{
AlertAndAlarmt item = e.Item as AlertAndAlarmt;
if (item == dataList[dataList.Count - 1] && haveMole == true && item != null)
{
pageIndex += 1;
BackgroundWorker wrk = new BackgroundWorker();
wrk.DoWork += (a, ee) => {
haveAlertOrAlarm();
};
wrk.RunWorkerAsync();
}
}
public AlarmInfoPage(AlertAndAlarmt alarm, string businessName)
{
InitializeComponent();
NavigationPage.SetBackButtonTitle(this, "");
_alarm = alarm;
this.Title = "预警记录";
businessNameLab.Text = businessName;
BackgroundWorker wrk = new BackgroundWorker();
wrk.DoWork += (sender, e) => {
makeData();
};
wrk.RunWorkerCompleted += (sender, e) => {
this.BindingContext = list;
_alarmInfo = list;
flowName.Text = _alarmInfo.flowName + " " + _alarmInfo.equipmentName + " " + _alarmInfo.operName;
};
wrk.RunWorkerAsync();
}
void haveAlertOrAlarm()
{
try
{
DateTime sd = startDatePicker.Date + startTime;
DateTime ed = endDatePicker.Date + endTime;
string url = App.BaseURL + "AppAlarm/GetAllAlarm?id=" + _businessId + "&startTime=" + sd.ToString("yyyy-MM-dd HH:mm") + "&endTime=" + ed.ToString("yyyy-MM-dd HH:mm") + "&pageIndex=" + pageIndex +
"&pageSize=20" + "&flag=" + _flag;
Console.WriteLine("请求接口：" + url);
string result = EasyWebRequest.sendGetHttpWebRequest(url);
Console.WriteLine("请求结果：" + result);
resutlDic resultList = JsonConvert.DeserializeObject <resutlDic>(result);
if (pageIndex == 0)
{
dataList.Clear();
}
for (int i = 0; i < resultList.Items.Count; i++)
{
AlertAndAlarmt item = resultList.Items[i];
dataList.Add(item);
}
if (resultList.Totals <= dataList.Count)
{
haveMole = false;
}
else
{
haveMole = true;
}
}
catch (Exception ex)
{
DisplayAlert("Alert", ex.Message, "OK");
}
}