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Gauges for Xamarin.iOS: Getting Started

This quick start tutorial demonstrates how to create a simple gauge view with TKGauge.

Setting up the TKGauge

In order to use the Telerik UI for Xamarin.iOS Gauge control you need to add the following namespace:

Open your *UIViewController file and add a reference to the chart header file:

using TelerikUI;

Note that starting with Xcode 6 Apple doesn't generate the precompiled headers file automatically. That is why you should add import the UIKit framework before importing TelerikUI:

using UIKit;

Add Radial Gauge

You can start by creating a TKGauge view object in ViewDidLoad() method. TelerikUI supports radial and linear type of gauge. You can instantiate TKRadialGauge by using the following lines:

radialGauge = new TKRadialGauge ();
this.radialGauge.Delegate = new GaugeDelegate ();
this.View.AddSubview (this.radialGauge);

There is few tipes of components - scales, segments and indicators - allowing you to fully customize the overall look and feel.

Add Scale

Here is an example how to add scale:

TKGaugeRadialScale scale = new TKGaugeRadialScale (new NSNumber (0), new NSNumber (6));
this.radialGauge.AddScale (scale);

Add Segment

Now add a segment to the scale:

TKGaugeSegment segment = new TKGaugeSegment (new NSNumber(-10), new NSNumber(18));
segment.Location = 0.56f;
segment.Width = 0.05f;
segment.Width2 = 0.05f;
segment.Cap = TKGaugeSegmentCap.Round;

Add Indicator

Add an indicator to the scale:

TKGaugeNeedle needle = new TKGaugeNeedle();
needle.Width = 3;
needle.TopWidth = 3;
needle.Length = 0.6f;
needle.ShadowOffset = new CGSize(1, 1);
needle.ShadowOpacity = 0.8f;
needle.ShadowRadius = 1.5f;

Gauge Getting Started example can be found in our Native Xamarin.iOS examples.

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