We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy.
<?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:chart="clr-namespace:Syncfusion.SfChart.XForms;assembly=Syncfusion.SfChart.XForms"
xmlns:rangenavigator="clr-namespace:Syncfusion.RangeNavigator.XForms;assembly=Syncfusion.SfChart.XForms"
xmlns:local="clr-namespace:LifeInTheUK.Views;assembly=LifeInTheUK"
x:Class="LifeInTheUK.Views.StatisticTimeView">
<ContentPage.Content>
<StackLayout x:Name="layout" Padding="10, 20, 10, 10" BackgroundColor="Transparent">
<chart:SfChart x:Name="Chart" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
<chart:SfChart.BindingContext>
<local:DataModel/>
</chart:SfChart.BindingContext>
<chart:SfChart.PrimaryAxis>
<chart:DateTimeAxis x:Name="dateTimeAxis" Minimum="5/1/2015" Maximum="8/1/2015">
<chart:DateTimeAxis.LabelStyle>
<chart:ChartAxisLabelStyle LabelFormat="MMM/dd" />
</chart:DateTimeAxis.LabelStyle>
</chart:DateTimeAxis>
</chart:SfChart.PrimaryAxis>
<chart:SfChart.SecondaryAxis>
<chart:NumericalAxis/>
</chart:SfChart.SecondaryAxis>
<chart:SfChart.Series>
<chart:SplineAreaSeries ItemsSource="{Binding DateTimeData}" XBindingPath="Date" YBindingPath="Value" />
</chart:SfChart.Series>
</chart:SfChart>
<rangenavigator:SfDateTimeRangeNavigator x:Name="RangeNavigator" RangeChanged="nac_RangeChanged" ItemsSource="{Binding DateTimeData}"
XBindingPath="Date" YBindingPath="Value" HeightRequest="120" ViewRangeStart="5/1/2015" ViewRangeEnd="8/1/2015">
<rangenavigator:SfDateTimeRangeNavigator.BindingContext>
<local:DataModel/>
</rangenavigator:SfDateTimeRangeNavigator.BindingContext>
</rangenavigator:SfDateTimeRangeNavigator>
</StackLayout>
</ContentPage.Content>
</ContentPage>
using LifeInTheUK.ViewModels;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace LifeInTheUK.Views
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class StatisticTimeView : ContentPage
{
public StatisticTimeView()
{
InitializeComponent();
dateTimeAxis.Minimum = DateTime.Now.AddDays(-2);
dateTimeAxis.Maximum = DateTime.Now;
RangeNavigator.Minimum = DateTime.Now.AddDays(-2);
RangeNavigator.Maximum = DateTime.Now;
}
void nac_RangeChanged(object sender, Syncfusion.RangeNavigator.XForms.RangeChangedEventArgs e)
{
dateTimeAxis.Minimum = e.ViewRangeStartDate;
dateTimeAxis.Maximum = e.ViewRangeEndDate;
}
}
public class DataModel
{
public ObservableCollection<Model> DateTimeData { get; set; }
public DataModel()
{
DateTimeData = new ObservableCollection<Model>
{
new Model (DateTime.Now.AddDays(-4), 14),
new Model (DateTime.Now.AddDays(-3), 54),
new Model (DateTime.Now.AddDays(-2), 23),
new Model (DateTime.Now.AddDays(-1), 53),
new Model (DateTime.Now, 25),
new Model (DateTime.Now.AddDays(1), 32),
new Model (DateTime.Now.AddDays(2), 78),
new Model (DateTime.Now.AddDays(3), 100),
new Model (DateTime.Now.AddDays(4), 55),
new Model (DateTime.Now.AddDays(5), 38),
};
}
}
public class Model
{
public DateTime Date { get; set; }
public double Value { get; set; }
public Model(DateTime dateTime, double value)
{
Date = dateTime;
Value = value;
}
}
}
Hi,
thank you for your example. Unfortunately, it doesn't work for me. I tried to update your components but there are not on NuGet. I added my local copy but doesn't work.
Another problem is: in UWP I still have this issue with render but in Android and iOS the component doesn't show anything (in iOS I'm calling new SfChartRenderer();).
When I start my project on Android, I receive an error (in attach). Now the code is very easy:
<chart:SfChart x:Name="Chart" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" HeightRequest="200">
<chart:SfChart.PrimaryAxis>
<chart:NumericalAxis IsVisible="False" />
</chart:SfChart.PrimaryAxis>
<chart:SfChart.Series>
<chart:AreaSeries ItemsSource ="{Binding TestData}" XBindingPath="Date" YBindingPath="ResultPercent" />
</chart:SfChart.Series>
<chart:SfChart.ChartBehaviors>
<chart:ChartZoomPanBehavior EnablePanning="true" EnableDoubleTap="false"/>
</chart:SfChart.ChartBehaviors>
</chart:SfChart>
TestData is
public ObservableCollection<DataPoint> TestData { get; set; }
And DataPoint is
public class DataPoint
{
public DateTime Date { get; set; }
public int NumberOfQuestions { get; set; }
public int NumberOfRightAnswers { get; set; }
public int NumberOfWrongAnswers { get; set; }
public decimal ResultPercent { get; set; }
}
Thank yo in advance
|
S. No |
Queries |
Answer
|
|
1. |
I tried to update your components but there are not on NuGet
|
You can overcome this problem by following Nuget installation steps in the below link,
|
|
2. |
In UWP I still have this issue with render |
If you are able to reproduce the problem when run the previous updated sample in UWP, please revert us with more information with your system details, it would be helpful for us to provide a solution sooner
|
|
3. |
But in Android and iOS the component doesn't show anything (in iOS I'm calling new SfChartRenderer()) |
Sorry for the inconvenience caused.
We would like to let you know that we have integrated SfChart Xamarin.Android and Xamarin.iOS source in Xamarin.Forms renderer projects in our Volume 3, 2017 release. So, could you please remove the Syncfusion.SfChart.Android.dll from your Xamarin.Forms android project and Syncfusion.SfChart.iOS.dll from your Xamarin.Forms iOS project.
Also, you need to add new SfRangeNavigatorRenderer(); code in AppDelegate.cs file.
After the above steps, we kindly request you to Rebuild your project before making deployment.
Please let us know if you are facing any issue in this. |
Hi Saravana,
thank you for your email. In Android I found this error
08-14 12:48:26.793 25611-25611/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: LifeInTheUK.Android, PID: 25611
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
Caused by: android.runtime.JavaProxyThrowable: System.NullReferenceException: Object reference not set to an instance of an object
at Com.Syncfusion.Charts.AreaSegment.SetData (System.Collections.IList xValues, System.Collections.IList yValues) [0x000b7] in <619005bdcd354845b2f196e292e85bb9>:0
at Com.Syncfusion.Charts.AreaSeries.CreateSegments () [0x00094] in <619005bdcd354845b2f196e292e85bb9>:0
at Com.Syncfusion.Charts.ChartSeries.InternalCreateSegments () [0x00020] in <619005bdcd354845b2f196e292e85bb9>:0
at Com.Syncfusion.Charts.ChartBase.UpdateArea () [0x00088] in <619005bdcd354845b2f196e292e85bb9>:0
at Com.Syncfusion.Charts.ChartBase.OnMeasureChart () [0x00031] in <619005bdcd354845b2f196e292e85bb9>:0
at Com.Syncfusion.Charts.SfChart.OnMeasure (System.Int32 widthMeasureSpec, System.Int32 heightMeasureSpec) [0x0003e] in <619005bdcd354845b2f196e292e85bb9>:0
at Android.Views.View.n_OnMeasure_II (System.IntPtr jnienv, System.IntPtr native__this, System.Int32 widthMeasureSpec, System.Int32 heightMeasureSpec) [0x00008] in <056f01a060094e3d88a61b3d647a92f3>:0
at (wrapper dynamic-method) System.Object:535034c9-f855-46c3-bed5-ed30ff445fbb (intptr,intptr,int,int)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <0d6c06b57a5444608385c7dd1ce0597a>:0
at Java.Interop.JniEnvironment+InstanceMethods.CallNonvirtualVoidMethod (Java.Interop.JniObjectReference instance, Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x00089] in <c6091a2e49094cdd81be08620999410f>:0
at Java.Interop.JniPeerMembers+JniInstanceMethods.InvokeNonvirtualVoidMethod (System.String encodedMember, Java.Interop.IJavaPeerable self, Java.Interop.JniArgumentValue* parameters) [0x0001f] in <c6091a2e49094cdd81be08620999410f>:0
at Android.Views.View.Measure (System.Int32 widthMeasureSpec, System.Int32 heightMeasureSpec) [0x00035] in <056f01a060094e3d88a61b3d647a92f3>:0
at Xamarin.Forms.Platform.Android.ViewRenderer`2[TView,TNativeView].OnLayout (System.Boolean changed, System.Int32 l, System.Int32 t, System.Int32 r, System.Int32 b) [0x00054] in <1481f85a917c4f2b882ea161e9bc082f>:0
at Xamarin.Forms.Platform.Android.FormsViewGroup.n_OnLayout_ZIIII (System.IntPtr jnienv, System.IntPtr native__this, System.Boolean p0, System.Int32 p1, System.Int32 p2, System.Int32 p3, System.Int32 p4) [0x00008] in <509b941eb6c9409ea563416977a01cbe>:0
at (wrapper dynamic-method) System.Object:6deb39f7-3e39-4e7a-8ade-bd181396a8a5 (intptr,intptr,bool,int,int,int,int)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <0d6c06b57a5444608385c7dd1ce0597a>:0
at Java.Interop.JniEnvironment+InstanceMethods.CallNonvirtualVoidMethod (Java.Interop.JniObjectReference instance, Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x00089] in <c6091a2e49094cdd81be08620999410f>:0
at Java.Interop.JniPeerMembers+JniInstanceMethods.InvokeVirtualVoidMethod (System.String encodedMember, Java.Interop.IJavaPeerable self, Java.Interop.JniArgumentValue* parameters) [0x0005d] in <c6091a2e49094cdd81be08620999410f>:0
at Xamarin.Forms.Platform.Android.FormsViewGroup.MeasureAndLayout (System.Int32 p0, System.Int32 p1, System.Int32 p2, System.Int32 p3, System.Int32 p4, System.Int32 p5) [0x00090] in <509b941eb6c9409ea563416977a01cbe>:0
at Xamarin.Forms.Platform.Android.VisualElementTracker.UpdateLayout () [0x0
I followed the instruction https://help.syncfusion.com/xamarin/introduction/download-and-installation but if I use NuGet I can't find this references https://help.syncfusion.com/xamarin/introduction/download-and-installation#add-reference-to-the-project
Now also UWP doesn't show any graphs.
This error occurs when data are empty or with one element.
After updating to version 15.6.0.26, if I try with a simple collection like
rtn.Add(new DataPoint()
{
Date = DateTime.Now,
NumberOfQuestions = 1,
NumberOfRightAnswers = 1,
NumberOfWrongAnswers = 1,
ResultPercent = 1
});
rtn.Add(new DataPoint()
{
Date = DateTime.Now,
NumberOfQuestions = 2,
NumberOfRightAnswers = 2,
NumberOfWrongAnswers = 2,
ResultPercent = 2
});
rtn.Add(new DataPoint()
{
Date = DateTime.Now,
NumberOfQuestions = 3,
NumberOfRightAnswers = 3,
NumberOfWrongAnswers = 3,
ResultPercent = 3
});
the result is an empty view (file in attach).
