protected override void OnCreate(Bundle bundle)
 {
 TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
OxyPlot.Xamarin.Forms.Platform.Android.PlotViewRenderer.Init();
 base.OnCreate(bundle);
 global::Xamarin.Forms.Forms.Init(this, bundle);
 LoadApplication(new App());
 }

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
 xmlns:local="clr-namespace:Warensoft.StockApp"
 xmlns:oxy="clr-namespace:OxyPlot.Xamarin.Forms;assembly=OxyPlot.Xamarin.Forms"
 x:Class="Warensoft.StockApp.MainPage">
 <!--
 此处要注意在头中注册OxyPlot的命名空间
 xmlns:oxy="clr-namespace:OxyPlot.Xamarin.Forms;assembly=OxyPlot.Xamarin.Forms"-->
 <Grid>
 <!--此处添加图形组件-->
 <oxy:PlotView Model="{Binding Model}" VerticalOptions="Center" HorizontalOptions="Center" />
 </Grid>
</ContentPage>

public partial class MainPage : ContentPage
 {
 public MainPage()
 {
 InitializeComponent();
 //此处注册ViewModel
 this.BindingContext = new MainPageViewModel();
 }
 }
 public class MainPageViewModel : ViewModelBase
 {
 public override Task ShowCancel(string title, string message)
 {
 throw new NotImplementedException();
 }
 public override Task<bool> ShowConfirm(string title, string message)
 {
 throw new NotImplementedException();
 }
 public override void ShowMessage(string message)
 {
 Application.Current.MainPage.DisplayAlert("提示",message,"OK");
 }
 protected override void InitBindingProperties()
 {
 }
}

public PlotModel Model
 {
 get { return this.GetProperty<PlotModel>("Model"); }
 set { this.SetProperty("Model", value); }
 }
 protected override void InitBindingProperties()
 {
 this.Model = new PlotModel();
 //添加X、Y轴
 this.Model.Axes.Add(new OxyPlot.Axes.DateTimeAxis()
 {
 Position = AxisPosition.Bottom,
 StringFormat = "HH:mm",
 MajorGridlineStyle = LineStyle.Solid,
 IntervalType = DateTimeIntervalType.Minutes,
 IntervalLength = 30,
 MinorIntervalType = DateTimeIntervalType.Minutes,
 Key = "Time",
 });
 this.Model.Axes.Add(new OxyPlot.Axes.LinearAxis()
 {
 Position = AxisPosition.Right,
 MajorGridlineStyle = LineStyle.Solid,
 MinorGridlineStyle = LineStyle.Dot,
 IntervalLength = 30,
 IsPanEnabled = false,
 IsZoomEnabled = false,
 TickStyle = TickStyle.Inside,
 });
 //添加K线和直线
 this.candle = new OxyPlot.Series.CandleStickSeries();
 this.line = new OxyPlot.Series.LineSeries() { Color = OxyColors.Blue };
 this.Model.Series.Add(this.candle);
 this.Model.Series.Add(this.line);
 }

/// <summary>
 /// 读取OKCoin的15分钟K线
 /// </summary>
 /// <returns></returns>
 public async Task<List<Kline>> LoadKline()
 {
 var url = $"https://www.okcoin.cn/api/v1/kline.do?symbol=btc_cny&type=15min&size=100";
 HttpClient client = new HttpClient();
 var result = await client.GetStringAsync(url);
 dynamic k = Newtonsoft.Json.JsonConvert.DeserializeObject(result);
 List<Kline> lines = new List<Kline>();
 int index = 0;
 foreach (var item in k)
 {
 List<double> d = new List<double>();
 foreach (var dd in item)
 {
  d.Add((double)((dynamic)dd).Value);
 }
 lines.Add(new Kline() { Data = d.ToArray()});
 index++;
 }
 return lines;
 }

private StockServiceDriver driver;
 public async Task UpdateData()
 {
 //初始化WarensoftSocketService客户端驱动,此处使用的是测试用AppKey和SecretKey
 this.driver = new StockServiceDriver("C6651783-A3B9-4B72-8B02-A2E67A59C5A6", "6C442B3AF58D4DDA81BB03B353C0D7D8");
 await Task.Run(async()=>
 {
 while (true)
 {
  try
  {
  //读取K线
  var kline =await this.LoadKline();
  //远程Warensoft Stock Service 分析SAR曲线
  var sar = await this.driver.GetSAR(kline);
  //绘图，注意办为需要更新UI，因此需要在主线程中执行更新代码
  this.SafeInvoke(()=> {
  //每次更新前，需要将旧数据清空
  this.candle.Items.Clear();
  this.line.Points.Clear();
  foreach (var item in kline.OrderBy(k=>k.Time))
  {
  //注意将时间改为OxyPlot能识别的格式
  var time = OxyPlot.Axes.DateTimeAxis.ToDouble(item.Time);
  this.candle.Items.Add(new HighLowItem(time,item.High,item.Low,item.Open,item.Close));
  }
  if (sar.OperationDone)
  {
  foreach (var item in sar.AdditionalData.OrderBy(s=>s.DateTime))
  {
   var time= OxyPlot.Axes.DateTimeAxis.ToDouble(item.DateTime);
 this.line.Points.Add(new DataPoint(time, item.Value));
  }
  }
  //更新UI
  this.Model.InvalidatePlot(true);
  });
  }
  catch (Exception ex)
  {
  }
  await Task.Delay(5000);
 }
 });
 }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Warensoft.EntLib.Common;
using Warensoft.EntLib.StockServiceClient;
using OxyPlot;
using OxyPlot.Axes;
using OxyPlot.Series;
using Warensoft.EntLib.StockServiceClient.Models;
using System.Net.Http;
namespace Warensoft.StockApp
{
 public partial class MainPage : ContentPage
 {
 public MainPage()
 {
 InitializeComponent();
 this.BindingContext = new MainPageViewModel();
 }
 }
 public class MainPageViewModel : ViewModelBase
 {
 private CandleStickSeries candle;
 private LineSeries line;
 public override Task ShowCancel(string title, string message)
 {
 throw new NotImplementedException();
 }
 public override Task<bool> ShowConfirm(string title, string message)
 {
 throw new NotImplementedException();
 }
 public override void ShowMessage(string message)
 {
 Application.Current.MainPage.DisplayAlert("提示",message,"OK");
 }
 public PlotModel Model
 {
 get { return this.GetProperty<PlotModel>("Model"); }
 set { this.SetProperty("Model", value); }
 }
 protected override void InitBindingProperties()
 {
 this.Model = new PlotModel();
 //添加X、Y轴
 this.Model.Axes.Add(new OxyPlot.Axes.DateTimeAxis()
 {
 Position = AxisPosition.Bottom,
 StringFormat = "HH:mm",
 MajorGridlineStyle = LineStyle.Solid,
 IntervalType = DateTimeIntervalType.Minutes,
 IntervalLength = 30,
 MinorIntervalType = DateTimeIntervalType.Minutes,
 Key = "Time",
 });
 this.Model.Axes.Add(new OxyPlot.Axes.LinearAxis()
 {
 Position = AxisPosition.Right,
 MajorGridlineStyle = LineStyle.Solid,
 MinorGridlineStyle = LineStyle.Dot,
 IntervalLength = 30,
 IsPanEnabled = false,
 IsZoomEnabled = false,
 TickStyle = TickStyle.Inside,
 });
 //添加K线和直线
 this.candle = new OxyPlot.Series.CandleStickSeries();
 this.line = new OxyPlot.Series.LineSeries() { Color = OxyColors.Blue };
 this.Model.Series.Add(this.candle);
 this.Model.Series.Add(this.line);
 this.UpdateData();
 }
 /// <summary>
 /// 读取OKCoin的15分钟K线
 /// </summary>
 /// <returns></returns>
 public async Task<List<Kline>> LoadKline()
 {
 var url = $"https://www.okcoin.cn/api/v1/kline.do?symbol=btc_cny&type=15min&size=100";
 HttpClient client = new HttpClient();
 var result = await client.GetStringAsync(url);
 dynamic k = Newtonsoft.Json.JsonConvert.DeserializeObject(result);
 List<Kline> lines = new List<Kline>();
 int index = 0;
 foreach (var item in k)
 {
 List<double> d = new List<double>();
 foreach (var dd in item)
 {
 d.Add((double)((dynamic)dd).Value);
 }
 lines.Add(new Kline() { Data = d.ToArray()});
 index++;
 }
 return lines;
 }
 private StockServiceDriver driver;
 public async Task UpdateData()
 {
 //初始化WarensoftSocketService客户端驱动,此处使用的是测试用AppKey和SecretKey
 this.driver = new StockServiceDriver("C6651783-A3B9-4B72-8B02-A2E67A59C5A6", "6C442B3AF58D4DDA81BB03B353C0D7D8");
 await Task.Run(async()=>
 {
 while (true)
 {
 try
 {
 //读取K线
 var kline =await this.LoadKline();
 //远程Warensoft Stock Service 分析SAR曲线
 var sar = await this.driver.GetSAR(kline);
 //绘图，注意办为需要更新UI，因此需要在主线程中执行更新代码
 this.SafeInvoke(()=> {
 //每次更新前，需要将旧数据清空
 this.candle.Items.Clear();
 this.line.Points.Clear();
 foreach (var item in kline.OrderBy(k=>k.Time))
 {
 //注意将时间改为OxyPlot能识别的格式
 var time = OxyPlot.Axes.DateTimeAxis.ToDouble(item.Time);
 this.candle.Items.Add(new HighLowItem(time,item.High,item.Low,item.Open,item.Close));

 }
 if (sar.OperationDone)
 {
 foreach (var item in sar.AdditionalData.OrderBy(s=>s.DateTime))
 {
 var time= OxyPlot.Axes.DateTimeAxis.ToDouble(item.DateTime);
this.line.Points.Add(new DataPoint(time, item.Value));
 }

 }
 //更新UI
 this.Model.InvalidatePlot(true);
 });
 }
 catch (Exception ex)
 {
 }
 await Task.Delay(5000);
 }
 });
 }
 }
}