ui new MapMarker problem

            Bitmap bitmap = BitmapFactory.DecodeResource(this.Resources, Resource.Drawable.marker);
            marker = new MapMarker(this, pos, MapControlAlignmentType.CenterBottom, bitmap);

            var popupView = marker.AddNewPopup(300, 300);
            var textView = new TextView(this.ApplicationContext);
            textView.Text = "Some popup text here: " + idx.ToString() + " / \n Loc" + marker.Location.ToStringEmptyWhenNull();
            textView.TextSize = 10;
            textView.SetTextColor(global::Android.Graphics.Color.LightBlue);
            textView.SetBackgroundColor(global::Android.Graphics.Color.DarkGray);
            popupView.AddView(textView);
            _mapView.AddMarker(marker);
            markerList.Add(marker);

The marker never visible on the map. It is a Bug?

Apr 07 '15 17:04 grais

this issue seems to be on android only from what i have been finding.

May 12 '15 19:05 drewbolt

Seems like I am experiencing the same issue. Did You found a solution ? My code so far is :


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using OsmSharp.Android.UI;
using OsmSharp.UI.Map;
using OsmSharp.UI.Map.Layers;
using OsmSharp.Math.Geo;
using Android.Graphics;
using OsmSharp.Android.UI.Controls;

namespace Android.Demo
{
    [Activity(Label = "Online Tiles Demo")]
    public class TilesActivity : Activity
    {
        private MapView _mapView;

        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // hide title bar.
            this.RequestWindowFeature(global::Android.Views.WindowFeatures.NoTitle);

            // initialize map.
            var map = new Map();

            map.AddLayer( new LayerTile( "http://a.tile.openstreetmap.org/{0}/{1}/{2}.png", 160 ) );

            // define the mapview.
            var mapViewSurface            = new MapViewSurface(this);
            mapViewSurface.MapScaleFactor = 2;
            _mapView                      = new MapView(this, mapViewSurface);
            _mapView.Map                  = map;
            _mapView.MapMaxZoomLevel      = 18; // limit min/max zoom because MBTiles sample only contains a small portion of a map.
            _mapView.MapMinZoomLevel      = 0;
            _mapView.MapTilt              = 0;
            _mapView.MapCenter            = new GeoCoordinate( 43, 24 );
            _mapView.MapZoom              = 12;
            _mapView.MapAllowTilt         = false;

            // set the map view as the default content view.
            SetContentView(_mapView);


            Bitmap bitmap = BitmapFactory.DecodeResource( this.Resources, Resource.Drawable.Icon );
             var marker = new MapMarker( this, new GeoCoordinate( 43, 24 ) );//, MapControlAlignmentType.CenterBottom, bitmap );

            _mapView.AddMarker( marker );
        }

        protected override void OnDestroy()
        {
            base.OnDestroy();

            OsmSharp.Logging.Log.TraceEvent("TilesActivity", OsmSharp.Logging.TraceEventType.Information, _mapView.CurrentView.ToString());
            _mapView.Map.Close();

            _mapView.Close();
            _mapView.Dispose();
        }
    }
}

But none marker shows up.

Mar 07 '16 11:03 YordanYanakiev

No we actually ended using a web view and used java script with Bing.

Works well but there is no way to use it offline.

From: Yordan Yanakiev [mailto:[email protected]] Sent: Monday, March 7, 2016 6:51 AM To: OsmSharp/ui Cc: drewbolt Subject: Re: [ui] new MapMarker problem (#228)

Seems like I am experiencing the same issue. Did You found a solution ? My code so far is :

using System; using System.Collections.Generic; using System.Linq; using System.Text;

using Android.App; using Android.Content; using Android.OS; using Android.Runtime; using Android.Views; using Android.Widget; using OsmSharp.Android.UI; using OsmSharp.UI.Map; using OsmSharp.UI.Map.Layers; using OsmSharp.Math.Geo; using Android.Graphics; using OsmSharp.Android.UI.Controls;

namespace Android.Demo { [Activity(Label = "Online Tiles Demo")] public class TilesActivity : Activity { private MapView _mapView;

    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // hide title bar.
        this.RequestWindowFeature(global::Android.Views.WindowFeatures.NoTitle);

        // initialize map.
        var map = new Map();

        map.AddLayer( new LayerTile( "http://a.tile.openstreetmap.org/{0}/{1}/{2}.png <http://a.tile.openstreetmap.org/%7b0%7d/%7b1%7d/%7b2%7d.png> ", 160 ) );

        // define the mapview.
        var mapViewSurface            = new MapViewSurface(this);
        mapViewSurface.MapScaleFactor = 2;
        _mapView                      = new MapView(this, mapViewSurface);
        _mapView.Map                  = map;
        _mapView.MapMaxZoomLevel      = 18; // limit min/max zoom because MBTiles sample only contains a small portion of a map.
        _mapView.MapMinZoomLevel      = 0;
        _mapView.MapTilt              = 0;
        _mapView.MapCenter            = new GeoCoordinate( 43, 24 );
        _mapView.MapZoom              = 12;
        _mapView.MapAllowTilt         = false;

        // set the map view as the default content view.
        SetContentView(_mapView);


        Bitmap bitmap = BitmapFactory.DecodeResource( this.Resources, Resource.Drawable.Icon );
         var marker = new MapMarker( this, new GeoCoordinate( 43, 24 ) );//, MapControlAlignmentType.CenterBottom, bitmap );

        _mapView.AddMarker( marker );
    }

    protected override void OnDestroy()
    {
        base.OnDestroy();

        OsmSharp.Logging.Log.TraceEvent("TilesActivity", OsmSharp.Logging.TraceEventType.Information, _mapView.CurrentView.ToString());
        _mapView.Map.Close();

        _mapView.Close();
        _mapView.Dispose();
    }
}

}

But none marker shows up.

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Mar 07 '16 14:03 drewbolt

:( Do You know if this issue have been fixed at all ?

Mar 07 '16 14:03 YordanYanakiev

What version on android are u building in??

From: Yordan Yanakiev [mailto:[email protected]] Sent: Monday, March 7, 2016 9:16 AM To: OsmSharp/ui Cc: drewbolt Subject: Re: [ui] new MapMarker problem (#228)

:(

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Mar 07 '16 14:03 drewbolt

Compiler : API level 23 ( Android 6 ) just tried with level 10 ( 2.3 ), level 19 ( 4.4 ), level 21 ( 5.0 ), and level 22 ( 5.1 ) - same result - no marker at all.

Mar 07 '16 14:03 YordanYanakiev

Hum I did get it work with that API level. What Build action property do you have the Image set to?? I think it has to be set to android resource but I cant remember 100%. Also are you sure you are using a Valid geocoord?? Just make sure. A easy way to get one is by going to http://www.gps-coordinates.net/ just to make sure your looking in the correct place for the marker on you app.

From: Yordan Yanakiev [mailto:[email protected]] Sent: Monday, March 7, 2016 9:38 AM To: OsmSharp/ui Cc: drewbolt Subject: Re: [ui] new MapMarker problem (#228)

Compiler : API level 23.

— Reply to this email directly or view it on GitHub https://github.com/OsmSharp/ui/issues/228#issuecomment-193274575 . https://github.com/notifications/beacon/ALojFKXIWBloa24xGnooYpaCLex5gRsiks5prDhQgaJpZM4D7yD1.gif

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Mar 07 '16 14:03 drewbolt

Also something to consider it might make things easier if you get the marker to draw on a button press or some other event.

I know if shouldn’t matter in theory but I have found that the android lifecycle sometimes causes some issues with drawing images in the mapview. I was using onlocation changed from the GPS when I got mine to work..

From: Yordan Yanakiev [mailto:[email protected]] Sent: Monday, March 7, 2016 9:38 AM To: OsmSharp/ui Cc: drewbolt Subject: Re: [ui] new MapMarker problem (#228)

Compiler : API level 23.

— Reply to this email directly or view it on GitHub https://github.com/OsmSharp/ui/issues/228#issuecomment-193274575 . https://github.com/notifications/beacon/ALojFKXIWBloa24xGnooYpaCLex5gRsiks5prDhQgaJpZM4D7yD1.gif

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Mar 07 '16 14:03 drewbolt

The image is ok - seted as AndroidResource, the coordinates are valid, it is place near me.

Mar 07 '16 14:03 YordanYanakiev

            var aButton = new Button( this );
            aButton.Text = "add marker";
            aButton.Click += ( sender, e ) =>
            {
                Bitmap bitmap = BitmapFactory.DecodeResource( this.Resources, Resource.Drawable.Icon );
                var marker = new MapMarker( this, new GeoCoordinate( 43, 24 ) );//, MapControlAlignmentType.CenterBottom, bitmap );
                _mapView.AddMarker( marker );
            };

            layout.AddView( aButton );

            layout.AddView( _mapView );

            SetContentView( layout );

Nope. even on user raised event - nothing happens yet - no marker..

Mar 07 '16 14:03 YordanYanakiev