Let’s start,

We already created a Google Map with Marker in my article. If you did not create this please follow this link,

• Xamarin Android: Create Xamarin android Google Map With Add Markers.

After creating Google Map with Marker App in Xamarin Android, then follow the below steps,

Step 1: Open MainActivity.cs page, then give following code,

Name Space: 

using Android.Gms.Maps.Model; // Add this Two Name Space 
using Android.Graphics;

C# Code:

 public void OnMapReady(GoogleMap googleMap) 
 { 
 this.GMap = googleMap; 
 GMap.UiSettings.ZoomControlsEnabled = true; 
 DrawCircle(GMap); //Calling Draw Circle 
 LatLng latlng = new LatLng(Convert.ToDouble(13.0291), Convert.ToDouble(80.2083)); 
 CameraUpdate camera = CameraUpdateFactory.NewLatLngZoom(latlng, 15); 
 GMap.MoveCamera(camera); 
 MarkerOptions options = new MarkerOptions() 
 .SetPosition(latlng) 
 .SetTitle("Chennai"); 
 GMap.AddMarker(options); 
 } 
 
 public void DrawCircle(GoogleMap gMap) 
 { 
 Circle circle; 
 var CircleMaker = new CircleOptions(); 
 var latlong = new LatLng(13.0291, 80.2083); //Location 
 CircleMaker.InvokeCenter(latlong); // 
 CircleMaker.InvokeRadius(1000); //Radius in Circle 
 CircleMaker.InvokeStrokeWidth(4); 
 CircleMaker.InvokeStrokeColor(Android.Graphics.Color.ParseColor("#e6d9534f")); //Circle Color 
 CircleMaker.InvokeFillColor(Color.Argb(034, 209, 72, 54)); 
 CameraUpdate camera = CameraUpdateFactory.NewLatLngZoom(latlong, 15); //Map Zoom Level 
 circle = GMap.AddCircle(CircleMaker); //Gmap Add Circle 
 }

Step 2: Next Run the app showing Drawing Circle in Around Marker with Google Map,

 

Finally, we have successfully created Xamarin Android Google Map Draw Circle around Marker App.

Anbu Mani

Anbu Mani(Microsoft MVP) is working Software Engineer in Changepond Technologies, Chennai, Tamilnadu, India. Having 4+ years of experience and his area of interest is C#, ASP.NET, SQL Server, Xamarin and Xamarin Forms,Azure…etc

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