too much RAM usage

[Georgi Yakov]

Hello, I made an App for Xamarin.Android using RadRadialGauge. I have a Thread that updates the indicator every 500ms based on a received value. The problem is that the longer the App runs the slower it becomes. I checked the RAM usage and it increases really fast, it reaches 200MB in a matter of a few minutes and as result the App becomes very laggy and it doesn't show a good performance. When I try to comment the indicator it works fine. I would like to ask if there is a way to reduce the RAM usage. Here is my Code: 

MainPage.xaml

<telerikGauges:RadRadialGauge StartAngle="180" SweepAngle="360">
                <telerikGauges:RadRadialGauge.Axis>
                    <telerikGauges:GaugeLinearAxis Maximum="100"
                                                       Minimum="0"
                                                       ShowLabels="False"
                                                       StrokeThickness="0" />
                </telerikGauges:RadRadialGauge.Axis>
                <telerikGauges:RadRadialGauge.Ranges>
                    <telerikGauges:GaugeRangesDefinition Offset="0">
                        <telerikGauges:GaugeRange Color="#DDDDDD"
                                                      From="0"
                                                      To="100" />
                    </telerikGauges:GaugeRangesDefinition>
                </telerikGauges:RadRadialGauge.Ranges>
                <telerikGauges:RadRadialGauge.Indicators>
                    <telerikGauges:GaugeBarIndicator x:Name="Needle1" EndCap="Oval"
                                        Fill="#a13127"
                                        StartCap="Oval"
                                        Offset="0"
                                        Value="0.45" />
                </telerikGauges:RadRadialGauge.Indicators>
            </telerikGauges:RadRadialGauge>
            <Label x:Name="GaugeLabel" FontSize="44"
                           HorizontalTextAlignment="Center"
                           Text="120"
                           TextColor="#a13127"
                           VerticalTextAlignment="Center" />

 

MainPage.xaml.cs

Thread t = new Thread(new ThreadStart(() =>
                {
                    while (true)
                    {
                       
                        Device.BeginInvokeOnMainThread(() =>
                        {
                            Needle1.Value = Val; // if I comment this line here RAM usage is normal
                            GaugeLabel.Text = Val.ToString("0.00");
                           
                        });
                        Thread.Sleep(500);
                    }

                }));
                t.Start();

[Didi]

Hello Georgi,

Thank you for the provided code.

I have tested the described scenario with the RadGauge control and I could not reproduce the issue with the RAM usage. I have tried different scenarios while tracking Android RAM usage - please check the attached gauge-ram-android.png file.

Please take a look at the attached project and let me know if I am missing something.

Regards,
Didi
Progress Telerik