Description:Xamarin does not load the iOS renderer assemblies by default in Xamarin.Forms. So, to solve this, you have to manually load it by creating an instance of SfGaugeRenderer class in the respective projects as mentioned below. iOS Project Create an instance of SfGaugeRenderer in FinishedLaunching overridden method of AppDelegate class in iOS Project as shown below,
C#:
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
...
//Before 15.3.0.26 assemblies please use the below renderers
new SfGaugeRenderer(); // For CircularGauge
new SfLinearGaugeRenderer (); // For LinearGauge
new SfDigitalGaugeRenderer ();// For DigitalGauge
//After 15.3.0.26 assemblies please use the below renderers
Syncfusion.SfGauge.XForms.iOS.SfGaugeRenderer.Init();//CircularGauge
Syncfusion.SfGauge.XForms.iOS.SfLinearGaugeRenderer.Init();//Lineargauge
Syncfusion.SfGauge.XForms.iOS.SfDigitalGaugeRenderer.Init();//DigitalGauge
...
return base.FinishedLaunching(app, options);
}
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