Progress® Telerik® UI for Xamarin Feedback Portal

Unplanned

Last Updated: 20 Sep 2021 15:34 by ADMIN

Chart: [Android] Tooltips remain in wrong location when the device is rotated

Created by: Aaron

Comments: 0

Category: Chart

Type: Bug Report

Chart: [Android] Tooltips remain in wrong location when the device is rotated

If a tooltip is already displayed in portrait orientation, rotating to landscape causes the tooltip to end up in a very wrong location.

Unplanned

Last Updated: 14 Jun 2021 04:48 by ADMIN

Chart: [iOS] GridLine Annotation for DateTime Axis is not visualized

Created by: Kristen

Comments: 4

Category: Chart

Type: Bug Report

Chart: [iOS] GridLine Annotation for DateTime Axis is not visualized

Annotation (Grid line ) for the DateTimeContinuousAxis is not visualized on iOS. It works as expected on Android.

Add grid line annotation for the datetime axes. the grid lines are not visualized on iOS.

<telerikChart:RadCartesianChart x:Name="chart">
    <telerikChart:RadCartesianChart.BindingContext>
        <local:ViewModel />
    </telerikChart:RadCartesianChart.BindingContext>
    <telerikChart:RadCartesianChart.HorizontalAxis>
        <telerikChart:DateTimeContinuousAxis LabelFitMode="Rotate" 
                                                x:Name="horizontal"/>
    </telerikChart:RadCartesianChart.HorizontalAxis>
    <telerikChart:RadCartesianChart.VerticalAxis>
        <telerikChart:NumericalAxis />
    </telerikChart:RadCartesianChart.VerticalAxis>
    <telerikChart:RadCartesianChart.Series>            
        <telerikChart:SplineSeries ValueBinding="Value"
                                    CategoryBinding="Date"
                                    ItemsSource="{Binding Data}"
                                    ShowLabels="True"
                                    />
    </telerikChart:RadCartesianChart.Series>
    <telerikChart:RadCartesianChart.Annotations>
        <telerikChart:CartesianGridLineAnnotation Stroke="#0E72F6" 
                                                StrokeThickness="2"
                                                Value="{Binding Threshold}"
                                                Axis="{x:Reference horizontal}">
            <telerikChart:CartesianGridLineAnnotation.DashArray>
                <x:Array Type="{x:Type x:Double}">
                    <x:Double>4.0</x:Double>
                    <x:Double>2.0</x:Double>
                </x:Array>
            </telerikChart:CartesianGridLineAnnotation.DashArray>
        </telerikChart:CartesianGridLineAnnotation>
    </telerikChart:RadCartesianChart.Annotations>
</telerikChart:RadCartesianChart>

Workaround:
Use CategoricalAxis.

Unplanned

Last Updated: 26 Feb 2018 10:49 by ADMIN

ADMIN

Chart: [iOS] appears smaller than expected

Created by: Nikolay

Comments: 0

Category: Chart

Type: Bug Report

Chart: [iOS] appears smaller than expected

Put several Pie charts in a StackPanel and set the WidthRequest and HeightRequest to let's say 60. You will notice that the circular pie itlsef appears much smaller than the expected 60. In Android and Windows Phone it appears as expected.

Unplanned

Last Updated: 14 Aug 2018 10:35 by Didi

ADMIN

Chart: [iOS] ChartPanAndZoomBehavior.HandleDoubleTap property is not working when ChartTooltipBehavior.TriggerMode is set on Tap

Created by: Didi

Comments: 0

Category: Chart

Type: Bug Report

Chart: [iOS] ChartPanAndZoomBehavior.HandleDoubleTap property is not working when ChartTooltipBehavior.TriggerMode is set on Tap

Unplanned

Last Updated: 28 Mar 2023 08:27 by James

Chart: [UWP] Resetting the zoom does not work every time

Created by: James

Comments: 0

Category: Chart

Type: Bug Report

Chart: [UWP] Resetting the zoom does not work every time

When having the following code on a button click

private void Button_Clicked(object sender, System.EventArgs e)
{
       this.chart.Zoom = new Size();
}

The chart zoom is reset first time, but when zooming again and pressing the button, the zoom level does not reset. You have to pan the chart, then zoom reset works.

This code resets the zoom:

private void OnResetZoomClicked(object sender, EventArgs e)
{
	this.chart.Zoom = new Size(1, 1); // This line is added as a workaround to reset the Zoom level
	this.chart.Zoom = new Size();
}

Unplanned

Last Updated: 19 Jun 2018 11:01 by ADMIN

ADMIN

Chart: [UWP] Render points outside plot area

Created by: Lance | Senior Manager Technical Support

Comments: 0

Category: Chart

Type: Bug Report

Chart: [UWP] Render points outside plot area

Add the ability to render points outside of the plot area when the data point value exceeds the explicitly set Min or Max values of the horizontal axis.

On Android and iOS, the line series will continue to extend off the plot area to a point that isn't rendered. Here's a screenshot, notice the line coming in from the left side of the plot area: https://www.telerik.com/clientsfiles/77e02115-6de0-4dd0-b572-5d5bc17a59b9_xamarin.jpg

On UWP, the beginning of the line series only starts on the first plot-able point. Here's a screenshot, notice the start of the line series: https://www.telerik.com/clientsfiles/d8c342e3-608b-40eb-95eb-8bd5e0dbc2e6_uwp.jpg

Unplanned

Last Updated: 05 Apr 2019 08:19 by ADMIN

Chart: [Xamarin.Android] Selection Behavior is not triggered afted data reload when animations are used

Created by: Bima

Comments: 0

Category: Chart

Type: Bug Report

Chart: [Xamarin.Android] Selection Behavior is not triggered afted data reload when animations are used

Once the data of the bar chart is changed, the selection behavior does not fire. The issue is reproducible when the chart is placed inside AnimationPanel,

Unplanned

Last Updated: 16 Jul 2019 09:51 by ADMIN

Chart: [iOS] The tooltip is shown only when the tip of the bar is tapped

Created by: Cesar

Comments: 2

Category: Chart

Type: Bug Report

Chart: [iOS] The tooltip is shown only when the tip of the bar is tapped

If you have a Chart with BarSeries and TooltipBehavior defined, the tooltip of each bar is shown only when the user taps in the area around the tip of the bar.

The expected behavior is the tooltip to be displayed when clicking anywhere on the bar.

Unplanned

Last Updated: 01 Apr 2020 08:47 by ADMIN

PieChart: [iOS, UWP] Multiple Pie/Donut series are not visualized correctly

Created by: n/a

Comments: 0

Category: Chart

Type: Bug Report

PieChart: [iOS, UWP] Multiple Pie/Donut series are not visualized correctly

If you have the following PieChart with donut series definition:

<telerikChart:RadPieChart HeightRequest="200" 
                          WidthRequest="200">
    <telerikChart:RadPieChart.Series>
        <telerikChart:DonutSeries ShowLabels="True"
                                  ValueBinding="Value"
                                  ItemsSource="{Binding Data}" />
        <telerikChart:DonutSeries ShowLabels="True"
                                  RadiusFactor="0.45"
                                  ValueBinding="Value"
                                  ItemsSource="{Binding Data1}" />
    </telerikChart:RadPieChart.Series>
</telerikChart:RadPieChart>

On android works as expected:

On iOS the series are overlapped and not visualized as expected. The radius factor is not respected

On UWP the second donut series in not visualized and the radius factor is not respected.

Unplanned

Last Updated: 04 May 2020 10:38 by ADMIN

Chart: [iOS] NSInvalidArgumentException is thrown when the Chart is zoomed and data is reloaded.

Created by: aharms

Comments: 0

Category: Chart

Type: Bug Report

Chart: [iOS] NSInvalidArgumentException is thrown when the Chart is zoomed and data is reloaded.

When the chart is zoomed/panned and the data is refreshed asynchronously, the app locks up and eventually crashes on iOS with NSInvalidArgumentException.

Unplanned

Last Updated: 12 Apr 2022 09:07 by Davide

Chart: [iOS] X axis labels are overlapped when data points are constantly added

Created by: Davide

Comments: 0

Category: Chart

Type: Bug Report

Chart: [iOS] X axis labels are overlapped when data points are constantly added

X-Axis labels are overlapped when new data points are constantly added.

on Android, the axis labels are replaced.

There is an inconsistency in the behavior on Android and iOS.

Workaround:

apply ChartPanAndZoomBehavior and set
PanMode to "Horizontal"
ZoomMode to "Horizontal"

And chart Zoom to "2,1"

<telerikChart:RadCartesianChart PaletteName="Light"
                                Zoom="2, 1">
    <telerikChart:RadCartesianChart.BindingContext>
        <local:ViewModel/>
    </telerikChart:RadCartesianChart.BindingContext>
    <telerikChart:RadCartesianChart.HorizontalAxis>
        <telerikChart:DateTimeContinuousAxis LabelFitMode="Rotate"
                                             MajorStepUnit="Day"
                                             PlotMode="OnTicks"
                                             LabelFormat="dd MMM"
                                             MajorStep="20"
                                             ShowLabels="True"/>
    </telerikChart:RadCartesianChart.HorizontalAxis>
    <telerikChart:RadCartesianChart.VerticalAxis>
        <telerikChart:NumericalAxis />
    </telerikChart:RadCartesianChart.VerticalAxis>
    <telerikChart:RadCartesianChart.Series>
        <telerikChart:LineSeries ValueBinding="Value"
                                 CategoryBinding="Date"
                                 DisplayName="Sales"
                                 ItemsSource="{Binding Data}"/>
    </telerikChart:RadCartesianChart.Series>
    <telerikChart:RadCartesianChart.ChartBehaviors>
        <telerikChart:ChartPanAndZoomBehavior ZoomMode="Horizontal" 
                                              PanMode="Horizontal" 
                                              HandleDoubleTap="True"/>
    </telerikChart:RadCartesianChart.ChartBehaviors>
</telerikChart:RadCartesianChart>

Unplanned

Last Updated: 03 Apr 2018 11:36 by ADMIN

ADMIN

Chart: Axis has one extra tick on iOS

Created by: Rosy Topchiyska

Comments: 2

Category: Chart

Type: Bug Report

Chart: Axis has one extra tick on iOS

This is visible only with longer labels, check the attached image.

Unplanned

Last Updated: 29 Mar 2018 11:49 by ADMIN

ADMIN

Chart: Bar width is incorrect in iOS when using a DateTimeContinuousAxis

Created by: Pavel R. Pavlov

Comments: 0

Category: Chart

Type: Bug Report

Chart: Bar width is incorrect in iOS when using a DateTimeContinuousAxis

Bars are too thin in iOS when items are per day.

Unplanned

Last Updated: 20 Feb 2020 13:59 by ADMIN

ADMIN

Chart: [iOS] Vertical axis labels are not displayed if the series is added dynamically

Created by: Yana

Comments: 4

Category: Chart

Type: Bug Report

Chart: [iOS] Vertical axis labels are not displayed if the series is added dynamically

If the series is added after the page constructor, the vertical axis labels are not shown.

As a workaround, create the series in the constructor and set its ItemsSource at a later stage.

Unplanned

Last Updated: 15 Feb 2018 09:59 by ADMIN

ADMIN

Chart: [UWP] Series labels are not shown when BarSeries are horizontal

Created by: Yana

Comments: 0

Category: Chart

Type: Bug Report

Chart: [UWP] Series labels are not shown when BarSeries are horizontal

Series labels are not displayed for horizontal BarSeries in UWP.

Unplanned

Last Updated: 22 Mar 2018 15:15 by Jaime

ADMIN

Chart: [Android]Custom EmptyContent message does not disappear when the Chart is populated

Created by: Stefan Nenchev

Comments: 1

Category: Chart

Type: Bug Report

Chart: [Android]Custom EmptyContent message does not disappear when the Chart is populated

Unplanned

Last Updated: 06 Dec 2023 15:42 by ADMIN

ADMIN

Chart: [iOS] DateTimeContinuousAxis displays incorrect labels when MajorStepUnit is Month

Created by: Ves

Comments: 2

Category: Chart

Type: Bug Report

Chart: [iOS] DateTimeContinuousAxis displays incorrect labels when MajorStepUnit is Month

DateTimeContinuousAxis displays incorrect labels when MajorStepUnit is Month. There are two labels for some months with 31 days.

Unplanned

Last Updated: 12 Apr 2018 08:08 by ADMIN

ADMIN

Chart: Stacked bars with zero values are not shown properly

Created by: Yana

Comments: 0

Category: Chart

Type: Bug Report

Chart: Stacked bars with zero values are not shown properly

If you have BarSeries with CombineMode set to "Stack" with zero values, the bars are placed to the maximum of the y-axis. 
As a work-around, you would need to manually adjust the Maximum value of the vertical axis.

Unplanned