2016-11-04 183 views
0

我正在使用xamarin在visual studio 2015中使用android。我想添加一个图表,因此对于基本了解,我跟进了oxyplot并下载了文档(示例代码)。现在我只是复制源代码,但通过编写代码。当我到达FindViewById<PlotView>(Resource.Id)点时,我无法在其中找到Id字段。为了更好的理解,请参阅波纹图像和代码Xamarin android无法找到id字段

enter image description here

贝娄是从我正在复制

using Android.App; 
using Android.OS; 

using OxyPlot.Xamarin.Android; 
using OxyPlot; 
using OxyPlot.Axes; 
using OxyPlot.Series; 

namespace AndroidApp1 
{ 
    [Activity(Label = "AndroidApp1", MainLauncher = true, Icon = "@drawable/icon")] 

public class MainActivity : Activity 
{ 
    protected override void OnCreate(Bundle bundle) 
    { 
     base.OnCreate(bundle); 

     // Set our view from the "main" layout resource 
     SetContentView(Resource.Layout.Main); 

     PlotView view = FindViewById<PlotView>(Resource.Id.plot_view); 
     view.Model = CreatePlotModel(); 
    } 

    private PlotModel CreatePlotModel() 
    { 
     var plotModel = new PlotModel { Title = "OxyPlot Demo" }; 

     plotModel.Axes.Add(new LinearAxis { Position = AxisPosition.Bottom }); 
     plotModel.Axes.Add(new LinearAxis { Position = AxisPosition.Left, Maximum = 10, Minimum = 0 }); 

     var series1 = new LineSeries 
     { 
      MarkerType = MarkerType.Circle, 
      MarkerSize = 4, 
      MarkerStroke = OxyColors.White 
     }; 

     series1.Points.Add(new DataPoint(0.0, 6.0)); 
     series1.Points.Add(new DataPoint(1.4, 2.1)); 
     series1.Points.Add(new DataPoint(2.0, 4.2)); 
     series1.Points.Add(new DataPoint(3.3, 2.3)); 
     series1.Points.Add(new DataPoint(4.7, 7.4)); 
     series1.Points.Add(new DataPoint(6.0, 6.2)); 
     series1.Points.Add(new DataPoint(8.9, 8.9)); 

     plotModel.Series.Add(series1); 

     return plotModel; 
    } 
}} 

贝娄的代码是在我写

using Android.App; 
using Android.OS; 

using OxyPlot.Xamarin.Android; 
using OxyPlot; 
using OxyPlot.Axes; 
using OxyPlot.Series; 


namespace SampleChart 
{ 
[Activity(Label = "SampleChart", MainLauncher = true, Icon = "@drawable/icon")] 
public class MainActivity : Activity 
{ 
    protected override void OnCreate(Bundle bundle) 
    { 
     base.OnCreate(bundle); 

     // Set our view from the "main" layout resource 
     SetContentView (Resource.Layout.Main); 
     PlotView view = FindViewById<PlotView>(Resource.Id) 
    } 
}} 

我不知道我错过了什么。 任何帮助,将不胜感激

+1

你能提供您Main.axml布局,使我们能够确保你有视图和id设置是否正确?你应该在你的视图中有“android:id =”@ + id/plot_view“”。 –

回答

0

您试图访问该ID在XML文件中定义 像这样

`机器人:ID = “@ + ID /内容”

,这样就可以指出到具有ID,或者它或者在另一个文件中像被细化的资源值 - > id.xml

+0

id应该在resources.cs中的ID类中创建,但它不存在 – faisal1208