Android Mapbox Marker Labels





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I'm trying to figure out how to make a dynamically generated list of markers display a dynamic text label on the map (not in the infoWindow). I know it's possible because I've used this feature in Mapbox Studio - I just can't figure out how to do it on Android! I considered creating a static Bitmap icon with the text incorporated, but that doesn't seem very flexible compared to the Mapbox Studio version, so I'd like to avoid it if I can! Any suggestions?










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    -1















    I'm trying to figure out how to make a dynamically generated list of markers display a dynamic text label on the map (not in the infoWindow). I know it's possible because I've used this feature in Mapbox Studio - I just can't figure out how to do it on Android! I considered creating a static Bitmap icon with the text incorporated, but that doesn't seem very flexible compared to the Mapbox Studio version, so I'd like to avoid it if I can! Any suggestions?










    share|improve this question

























      -1












      -1








      -1








      I'm trying to figure out how to make a dynamically generated list of markers display a dynamic text label on the map (not in the infoWindow). I know it's possible because I've used this feature in Mapbox Studio - I just can't figure out how to do it on Android! I considered creating a static Bitmap icon with the text incorporated, but that doesn't seem very flexible compared to the Mapbox Studio version, so I'd like to avoid it if I can! Any suggestions?










      share|improve this question














      I'm trying to figure out how to make a dynamically generated list of markers display a dynamic text label on the map (not in the infoWindow). I know it's possible because I've used this feature in Mapbox Studio - I just can't figure out how to do it on Android! I considered creating a static Bitmap icon with the text incorporated, but that doesn't seem very flexible compared to the Mapbox Studio version, so I'd like to avoid it if I can! Any suggestions?







      android label mapbox mapbox-marker






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      asked Nov 24 '18 at 21:12









      Jake MaddenJake Madden

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          You're trying to do what's called data-driven styling



          You should use a SymbolLayer to show text on a map. If the text you want to show is based on GeoJSON Features in your data set, then use the get expression in the textField property of a SymbolLayer.



          FeatureCollection featureCollection = FeatureCollection.fromFeatures();
          GeoJsonSource geoJsonSource = new GeoJsonSource("source-id", featureCollection);
          mapboxMap.addSource(geoJsonSource);

          SymbolLayer symbolLayer = new SymbolLayer("layer-id", "source-id")
          .withProperties(PropertyFactory.textField(Expression.get("FEATURE-PROPERTY-KEY")));
          mapboxMap.addLayer(symbolLayer);


          The Annotation Plugin simplifies some of this. Also for reference to see how SymbolLayers are used, there is the Mapbox Android demo app.






          share|improve this answer
























          • You can also create a separate SymbolLayer for the markers. Reference the same GeoJson source as for your text. But for the marker layer, use the iconImage PropertyFactory method. Bitmap icon = BitmapFactory.decodeResource( Actvity.this.getResources(), R.drawable.marker_image); mapboxMap.addImage("marker-image", icon); then later: SymbolLayer markerLayer = new SymbolLayer("marker-layer-id", "source-id") .withProperties(PropertyFactory.iconImage("marker-image")); mapboxMap.addLayer(markerLayer);

            – langsmith
            Nov 25 '18 at 16:43













          • Thanks, this is just what I'm after I think! Do I have an alternative if my source is a dynamically compiled list of marker points in Java? I have a database of locations, and want to add them to a list of markers based on a set of information (so static source files aren't an option, unless I can dynamically draw a few points from such a source?). Thanks for the help! I'm curious about your second suggestion - what's the benefit of doing it this way? Seems a bit more complicated?

            – Jake Madden
            Nov 25 '18 at 21:13













          • Ahh, nevermind my question! That annotation symbolManager is exactly what I needed. I'll just use SymbolOptions for each marker. :) Thanks so much! I'm curious about the negative to my question - am I asking something stupid?

            – Jake Madden
            Nov 25 '18 at 21:26











          • @JakeMadden, not sure what you mean by "I'm curious about the negative to my question" Anyways, sounds like you're figuring things out. Once a GeoJsonSource is added to the map, any number of layers can reference the unique source id in the layer constructor.

            – langsmith
            Nov 27 '18 at 4:08











          • @JakeMadden , hard to help 'cause idk what your data looks like. If you can get the lat/long from each location in your database, do List<Feature> featureList = new ArrayList<>(); for (int x = 0; x < listOfLocationsFromDatabase.size; x++) { Point singlePoint = Point.fromLngLat(listOfLocationsFromDatabase.get(x).getLongitude(), listOfLocationsFromDatabase.get(x).getLongitude()); featureList.add(Feature.fromGeometry(singlePoint)); } FeatureCollection featureCollection = FeatureCollection.fromFeatures(featureList);

            – langsmith
            Nov 27 '18 at 4:13












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          1 Answer
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          active

          oldest

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          1














          You're trying to do what's called data-driven styling



          You should use a SymbolLayer to show text on a map. If the text you want to show is based on GeoJSON Features in your data set, then use the get expression in the textField property of a SymbolLayer.



          FeatureCollection featureCollection = FeatureCollection.fromFeatures();
          GeoJsonSource geoJsonSource = new GeoJsonSource("source-id", featureCollection);
          mapboxMap.addSource(geoJsonSource);

          SymbolLayer symbolLayer = new SymbolLayer("layer-id", "source-id")
          .withProperties(PropertyFactory.textField(Expression.get("FEATURE-PROPERTY-KEY")));
          mapboxMap.addLayer(symbolLayer);


          The Annotation Plugin simplifies some of this. Also for reference to see how SymbolLayers are used, there is the Mapbox Android demo app.






          share|improve this answer
























          • You can also create a separate SymbolLayer for the markers. Reference the same GeoJson source as for your text. But for the marker layer, use the iconImage PropertyFactory method. Bitmap icon = BitmapFactory.decodeResource( Actvity.this.getResources(), R.drawable.marker_image); mapboxMap.addImage("marker-image", icon); then later: SymbolLayer markerLayer = new SymbolLayer("marker-layer-id", "source-id") .withProperties(PropertyFactory.iconImage("marker-image")); mapboxMap.addLayer(markerLayer);

            – langsmith
            Nov 25 '18 at 16:43













          • Thanks, this is just what I'm after I think! Do I have an alternative if my source is a dynamically compiled list of marker points in Java? I have a database of locations, and want to add them to a list of markers based on a set of information (so static source files aren't an option, unless I can dynamically draw a few points from such a source?). Thanks for the help! I'm curious about your second suggestion - what's the benefit of doing it this way? Seems a bit more complicated?

            – Jake Madden
            Nov 25 '18 at 21:13













          • Ahh, nevermind my question! That annotation symbolManager is exactly what I needed. I'll just use SymbolOptions for each marker. :) Thanks so much! I'm curious about the negative to my question - am I asking something stupid?

            – Jake Madden
            Nov 25 '18 at 21:26











          • @JakeMadden, not sure what you mean by "I'm curious about the negative to my question" Anyways, sounds like you're figuring things out. Once a GeoJsonSource is added to the map, any number of layers can reference the unique source id in the layer constructor.

            – langsmith
            Nov 27 '18 at 4:08











          • @JakeMadden , hard to help 'cause idk what your data looks like. If you can get the lat/long from each location in your database, do List<Feature> featureList = new ArrayList<>(); for (int x = 0; x < listOfLocationsFromDatabase.size; x++) { Point singlePoint = Point.fromLngLat(listOfLocationsFromDatabase.get(x).getLongitude(), listOfLocationsFromDatabase.get(x).getLongitude()); featureList.add(Feature.fromGeometry(singlePoint)); } FeatureCollection featureCollection = FeatureCollection.fromFeatures(featureList);

            – langsmith
            Nov 27 '18 at 4:13
















          1














          You're trying to do what's called data-driven styling



          You should use a SymbolLayer to show text on a map. If the text you want to show is based on GeoJSON Features in your data set, then use the get expression in the textField property of a SymbolLayer.



          FeatureCollection featureCollection = FeatureCollection.fromFeatures();
          GeoJsonSource geoJsonSource = new GeoJsonSource("source-id", featureCollection);
          mapboxMap.addSource(geoJsonSource);

          SymbolLayer symbolLayer = new SymbolLayer("layer-id", "source-id")
          .withProperties(PropertyFactory.textField(Expression.get("FEATURE-PROPERTY-KEY")));
          mapboxMap.addLayer(symbolLayer);


          The Annotation Plugin simplifies some of this. Also for reference to see how SymbolLayers are used, there is the Mapbox Android demo app.






          share|improve this answer
























          • You can also create a separate SymbolLayer for the markers. Reference the same GeoJson source as for your text. But for the marker layer, use the iconImage PropertyFactory method. Bitmap icon = BitmapFactory.decodeResource( Actvity.this.getResources(), R.drawable.marker_image); mapboxMap.addImage("marker-image", icon); then later: SymbolLayer markerLayer = new SymbolLayer("marker-layer-id", "source-id") .withProperties(PropertyFactory.iconImage("marker-image")); mapboxMap.addLayer(markerLayer);

            – langsmith
            Nov 25 '18 at 16:43













          • Thanks, this is just what I'm after I think! Do I have an alternative if my source is a dynamically compiled list of marker points in Java? I have a database of locations, and want to add them to a list of markers based on a set of information (so static source files aren't an option, unless I can dynamically draw a few points from such a source?). Thanks for the help! I'm curious about your second suggestion - what's the benefit of doing it this way? Seems a bit more complicated?

            – Jake Madden
            Nov 25 '18 at 21:13













          • Ahh, nevermind my question! That annotation symbolManager is exactly what I needed. I'll just use SymbolOptions for each marker. :) Thanks so much! I'm curious about the negative to my question - am I asking something stupid?

            – Jake Madden
            Nov 25 '18 at 21:26











          • @JakeMadden, not sure what you mean by "I'm curious about the negative to my question" Anyways, sounds like you're figuring things out. Once a GeoJsonSource is added to the map, any number of layers can reference the unique source id in the layer constructor.

            – langsmith
            Nov 27 '18 at 4:08











          • @JakeMadden , hard to help 'cause idk what your data looks like. If you can get the lat/long from each location in your database, do List<Feature> featureList = new ArrayList<>(); for (int x = 0; x < listOfLocationsFromDatabase.size; x++) { Point singlePoint = Point.fromLngLat(listOfLocationsFromDatabase.get(x).getLongitude(), listOfLocationsFromDatabase.get(x).getLongitude()); featureList.add(Feature.fromGeometry(singlePoint)); } FeatureCollection featureCollection = FeatureCollection.fromFeatures(featureList);

            – langsmith
            Nov 27 '18 at 4:13














          1












          1








          1







          You're trying to do what's called data-driven styling



          You should use a SymbolLayer to show text on a map. If the text you want to show is based on GeoJSON Features in your data set, then use the get expression in the textField property of a SymbolLayer.



          FeatureCollection featureCollection = FeatureCollection.fromFeatures();
          GeoJsonSource geoJsonSource = new GeoJsonSource("source-id", featureCollection);
          mapboxMap.addSource(geoJsonSource);

          SymbolLayer symbolLayer = new SymbolLayer("layer-id", "source-id")
          .withProperties(PropertyFactory.textField(Expression.get("FEATURE-PROPERTY-KEY")));
          mapboxMap.addLayer(symbolLayer);


          The Annotation Plugin simplifies some of this. Also for reference to see how SymbolLayers are used, there is the Mapbox Android demo app.






          share|improve this answer













          You're trying to do what's called data-driven styling



          You should use a SymbolLayer to show text on a map. If the text you want to show is based on GeoJSON Features in your data set, then use the get expression in the textField property of a SymbolLayer.



          FeatureCollection featureCollection = FeatureCollection.fromFeatures();
          GeoJsonSource geoJsonSource = new GeoJsonSource("source-id", featureCollection);
          mapboxMap.addSource(geoJsonSource);

          SymbolLayer symbolLayer = new SymbolLayer("layer-id", "source-id")
          .withProperties(PropertyFactory.textField(Expression.get("FEATURE-PROPERTY-KEY")));
          mapboxMap.addLayer(symbolLayer);


          The Annotation Plugin simplifies some of this. Also for reference to see how SymbolLayers are used, there is the Mapbox Android demo app.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 25 '18 at 16:41









          langsmithlangsmith

          121211




          121211













          • You can also create a separate SymbolLayer for the markers. Reference the same GeoJson source as for your text. But for the marker layer, use the iconImage PropertyFactory method. Bitmap icon = BitmapFactory.decodeResource( Actvity.this.getResources(), R.drawable.marker_image); mapboxMap.addImage("marker-image", icon); then later: SymbolLayer markerLayer = new SymbolLayer("marker-layer-id", "source-id") .withProperties(PropertyFactory.iconImage("marker-image")); mapboxMap.addLayer(markerLayer);

            – langsmith
            Nov 25 '18 at 16:43













          • Thanks, this is just what I'm after I think! Do I have an alternative if my source is a dynamically compiled list of marker points in Java? I have a database of locations, and want to add them to a list of markers based on a set of information (so static source files aren't an option, unless I can dynamically draw a few points from such a source?). Thanks for the help! I'm curious about your second suggestion - what's the benefit of doing it this way? Seems a bit more complicated?

            – Jake Madden
            Nov 25 '18 at 21:13













          • Ahh, nevermind my question! That annotation symbolManager is exactly what I needed. I'll just use SymbolOptions for each marker. :) Thanks so much! I'm curious about the negative to my question - am I asking something stupid?

            – Jake Madden
            Nov 25 '18 at 21:26











          • @JakeMadden, not sure what you mean by "I'm curious about the negative to my question" Anyways, sounds like you're figuring things out. Once a GeoJsonSource is added to the map, any number of layers can reference the unique source id in the layer constructor.

            – langsmith
            Nov 27 '18 at 4:08











          • @JakeMadden , hard to help 'cause idk what your data looks like. If you can get the lat/long from each location in your database, do List<Feature> featureList = new ArrayList<>(); for (int x = 0; x < listOfLocationsFromDatabase.size; x++) { Point singlePoint = Point.fromLngLat(listOfLocationsFromDatabase.get(x).getLongitude(), listOfLocationsFromDatabase.get(x).getLongitude()); featureList.add(Feature.fromGeometry(singlePoint)); } FeatureCollection featureCollection = FeatureCollection.fromFeatures(featureList);

            – langsmith
            Nov 27 '18 at 4:13



















          • You can also create a separate SymbolLayer for the markers. Reference the same GeoJson source as for your text. But for the marker layer, use the iconImage PropertyFactory method. Bitmap icon = BitmapFactory.decodeResource( Actvity.this.getResources(), R.drawable.marker_image); mapboxMap.addImage("marker-image", icon); then later: SymbolLayer markerLayer = new SymbolLayer("marker-layer-id", "source-id") .withProperties(PropertyFactory.iconImage("marker-image")); mapboxMap.addLayer(markerLayer);

            – langsmith
            Nov 25 '18 at 16:43













          • Thanks, this is just what I'm after I think! Do I have an alternative if my source is a dynamically compiled list of marker points in Java? I have a database of locations, and want to add them to a list of markers based on a set of information (so static source files aren't an option, unless I can dynamically draw a few points from such a source?). Thanks for the help! I'm curious about your second suggestion - what's the benefit of doing it this way? Seems a bit more complicated?

            – Jake Madden
            Nov 25 '18 at 21:13













          • Ahh, nevermind my question! That annotation symbolManager is exactly what I needed. I'll just use SymbolOptions for each marker. :) Thanks so much! I'm curious about the negative to my question - am I asking something stupid?

            – Jake Madden
            Nov 25 '18 at 21:26











          • @JakeMadden, not sure what you mean by "I'm curious about the negative to my question" Anyways, sounds like you're figuring things out. Once a GeoJsonSource is added to the map, any number of layers can reference the unique source id in the layer constructor.

            – langsmith
            Nov 27 '18 at 4:08











          • @JakeMadden , hard to help 'cause idk what your data looks like. If you can get the lat/long from each location in your database, do List<Feature> featureList = new ArrayList<>(); for (int x = 0; x < listOfLocationsFromDatabase.size; x++) { Point singlePoint = Point.fromLngLat(listOfLocationsFromDatabase.get(x).getLongitude(), listOfLocationsFromDatabase.get(x).getLongitude()); featureList.add(Feature.fromGeometry(singlePoint)); } FeatureCollection featureCollection = FeatureCollection.fromFeatures(featureList);

            – langsmith
            Nov 27 '18 at 4:13

















          You can also create a separate SymbolLayer for the markers. Reference the same GeoJson source as for your text. But for the marker layer, use the iconImage PropertyFactory method. Bitmap icon = BitmapFactory.decodeResource( Actvity.this.getResources(), R.drawable.marker_image); mapboxMap.addImage("marker-image", icon); then later: SymbolLayer markerLayer = new SymbolLayer("marker-layer-id", "source-id") .withProperties(PropertyFactory.iconImage("marker-image")); mapboxMap.addLayer(markerLayer);

          – langsmith
          Nov 25 '18 at 16:43







          You can also create a separate SymbolLayer for the markers. Reference the same GeoJson source as for your text. But for the marker layer, use the iconImage PropertyFactory method. Bitmap icon = BitmapFactory.decodeResource( Actvity.this.getResources(), R.drawable.marker_image); mapboxMap.addImage("marker-image", icon); then later: SymbolLayer markerLayer = new SymbolLayer("marker-layer-id", "source-id") .withProperties(PropertyFactory.iconImage("marker-image")); mapboxMap.addLayer(markerLayer);

          – langsmith
          Nov 25 '18 at 16:43















          Thanks, this is just what I'm after I think! Do I have an alternative if my source is a dynamically compiled list of marker points in Java? I have a database of locations, and want to add them to a list of markers based on a set of information (so static source files aren't an option, unless I can dynamically draw a few points from such a source?). Thanks for the help! I'm curious about your second suggestion - what's the benefit of doing it this way? Seems a bit more complicated?

          – Jake Madden
          Nov 25 '18 at 21:13







          Thanks, this is just what I'm after I think! Do I have an alternative if my source is a dynamically compiled list of marker points in Java? I have a database of locations, and want to add them to a list of markers based on a set of information (so static source files aren't an option, unless I can dynamically draw a few points from such a source?). Thanks for the help! I'm curious about your second suggestion - what's the benefit of doing it this way? Seems a bit more complicated?

          – Jake Madden
          Nov 25 '18 at 21:13















          Ahh, nevermind my question! That annotation symbolManager is exactly what I needed. I'll just use SymbolOptions for each marker. :) Thanks so much! I'm curious about the negative to my question - am I asking something stupid?

          – Jake Madden
          Nov 25 '18 at 21:26





          Ahh, nevermind my question! That annotation symbolManager is exactly what I needed. I'll just use SymbolOptions for each marker. :) Thanks so much! I'm curious about the negative to my question - am I asking something stupid?

          – Jake Madden
          Nov 25 '18 at 21:26













          @JakeMadden, not sure what you mean by "I'm curious about the negative to my question" Anyways, sounds like you're figuring things out. Once a GeoJsonSource is added to the map, any number of layers can reference the unique source id in the layer constructor.

          – langsmith
          Nov 27 '18 at 4:08





          @JakeMadden, not sure what you mean by "I'm curious about the negative to my question" Anyways, sounds like you're figuring things out. Once a GeoJsonSource is added to the map, any number of layers can reference the unique source id in the layer constructor.

          – langsmith
          Nov 27 '18 at 4:08













          @JakeMadden , hard to help 'cause idk what your data looks like. If you can get the lat/long from each location in your database, do List<Feature> featureList = new ArrayList<>(); for (int x = 0; x < listOfLocationsFromDatabase.size; x++) { Point singlePoint = Point.fromLngLat(listOfLocationsFromDatabase.get(x).getLongitude(), listOfLocationsFromDatabase.get(x).getLongitude()); featureList.add(Feature.fromGeometry(singlePoint)); } FeatureCollection featureCollection = FeatureCollection.fromFeatures(featureList);

          – langsmith
          Nov 27 '18 at 4:13





          @JakeMadden , hard to help 'cause idk what your data looks like. If you can get the lat/long from each location in your database, do List<Feature> featureList = new ArrayList<>(); for (int x = 0; x < listOfLocationsFromDatabase.size; x++) { Point singlePoint = Point.fromLngLat(listOfLocationsFromDatabase.get(x).getLongitude(), listOfLocationsFromDatabase.get(x).getLongitude()); featureList.add(Feature.fromGeometry(singlePoint)); } FeatureCollection featureCollection = FeatureCollection.fromFeatures(featureList);

          – langsmith
          Nov 27 '18 at 4:13




















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