diff options
Diffstat (limited to 'platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/GeoJsonClusteringActivity.java')
| -rw-r--r-- | platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/GeoJsonClusteringActivity.java | 230 |
1 files changed, 144 insertions, 86 deletions
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/GeoJsonClusteringActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/GeoJsonClusteringActivity.java index 2e1d255a44..dfc478eed0 100644 --- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/GeoJsonClusteringActivity.java +++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/GeoJsonClusteringActivity.java @@ -1,10 +1,15 @@ package com.mapbox.mapboxsdk.testapp.activity.style; import android.graphics.Color; +import android.graphics.Point; +import android.graphics.PointF; import android.os.Bundle; import android.support.v4.content.res.ResourcesCompat; import android.support.v7.app.AppCompatActivity; import android.view.MenuItem; +import android.widget.Toast; +import com.mapbox.geojson.Feature; +import com.mapbox.geojson.FeatureCollection; import com.mapbox.mapboxsdk.camera.CameraUpdateFactory; import com.mapbox.mapboxsdk.geometry.LatLng; import com.mapbox.mapboxsdk.maps.MapView; @@ -16,11 +21,13 @@ import com.mapbox.mapboxsdk.style.layers.SymbolLayer; import com.mapbox.mapboxsdk.style.sources.GeoJsonOptions; import com.mapbox.mapboxsdk.style.sources.GeoJsonSource; import com.mapbox.mapboxsdk.testapp.R; +import com.mapbox.mapboxsdk.testapp.utils.GeoParseUtil; import com.mapbox.mapboxsdk.utils.BitmapUtils; import timber.log.Timber; -import java.net.MalformedURLException; -import java.net.URL; +import java.io.IOException; +import java.util.List; +import java.util.Objects; import static com.mapbox.mapboxsdk.style.expressions.Expression.all; import static com.mapbox.mapboxsdk.style.expressions.Expression.division; @@ -54,6 +61,9 @@ public class GeoJsonClusteringActivity extends AppCompatActivity { private MapView mapView; private MapboxMap mapboxMap; + private GeoJsonSource clusterSource; + private int clickOptionCounter; + @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); @@ -68,19 +78,119 @@ public class GeoJsonClusteringActivity extends AppCompatActivity { mapboxMap = map; mapboxMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(37.7749, 122.4194), 0)); - mapboxMap.setStyle(Style.MAPBOX_STREETS, new Style.OnStyleLoaded() { - @Override - public void onStyleLoaded(Style style) { - style.addImage( - "icon-id", - BitmapUtils.getBitmapFromDrawable(getResources().getDrawable(R.drawable.ic_hearing_black_24dp)), - true - ); - // Add a clustered source with some layers - addClusteredGeoJsonSource(style); + final int[][] clusterLayers = new int[][] { + new int[] {150, ResourcesCompat.getColor(getResources(), R.color.redAccent, getTheme())}, + new int[] {20, ResourcesCompat.getColor(getResources(), R.color.greenAccent, getTheme())}, + new int[] {0, ResourcesCompat.getColor(getResources(), R.color.blueAccent, getTheme())} + }; + + try { + mapboxMap.setStyle(new Style.Builder() + .fromUrl(Style.LIGHT) + .withSource(clusterSource = createClusterSource()) + .withLayer(createSymbolLayer()) + .withLayer(createClusterLevelLayer(0, clusterLayers)) + .withLayer(createClusterLevelLayer(1, clusterLayers)) + .withLayer(createClusterLevelLayer(2, clusterLayers)) + .withLayer(createClusterTextLayer()) + .withImage("icon-id", Objects.requireNonNull( + BitmapUtils.getBitmapFromDrawable(getResources().getDrawable(R.drawable.ic_hearing_black_24dp))), true + ) + ); + } catch (IOException exception) { + Timber.e(exception); + } + + mapboxMap.addOnMapClickListener(latLng -> { + PointF point = mapboxMap.getProjection().toScreenLocation(latLng); + List<Feature> features = mapboxMap.queryRenderedFeatures(point, "cluster-0", "cluster-1", "cluster-2"); + if (!features.isEmpty()) { + onClusterClick(features.get(0), new Point((int) point.x, (int) point.y)); } + return true; }); }); + + findViewById(R.id.fab).setOnClickListener(v -> { + updateClickOptionCounter(); + notifyClickOptionUpdate(); + }); + } + + private void onClusterClick(Feature cluster, Point clickPoint) { + if (clickOptionCounter == 0) { + double nextZoomLevel = clusterSource.getClusterExpansionZoom(cluster); + double zoomDelta = nextZoomLevel - mapboxMap.getCameraPosition().zoom; + mapboxMap.animateCamera(CameraUpdateFactory.zoomBy(zoomDelta, clickPoint)); + Toast.makeText(this, "Zooming to " + nextZoomLevel, Toast.LENGTH_SHORT).show(); + } else if (clickOptionCounter == 1) { + FeatureCollection collection = clusterSource.getClusterChildren(cluster); + Toast.makeText(this, "Children: " + collection.toJson(), Toast.LENGTH_SHORT).show(); + } else { + FeatureCollection collection = clusterSource.getClusterLeaves(cluster, 2, 1); + Toast.makeText(this, "Leaves: " + collection.toJson(), Toast.LENGTH_SHORT).show(); + } + } + + private GeoJsonSource createClusterSource() throws IOException { + String earthQuakes = GeoParseUtil.loadStringFromAssets(this, "earthquakes.geojson"); + FeatureCollection featureCollection = FeatureCollection.fromJson(earthQuakes); + return new GeoJsonSource("earthquakes", featureCollection, new GeoJsonOptions() + .withCluster(true) + .withClusterMaxZoom(14) + .withClusterRadius(50) + ); + } + + private SymbolLayer createSymbolLayer() { + return new SymbolLayer("unclustered-points", "earthquakes") + .withProperties( + iconImage("icon-id"), + iconSize( + division( + get("mag"), literal(4.0f) + ) + ), + iconColor( + interpolate(exponential(1), get("mag"), + stop(2.0, rgb(0, 255, 0)), + stop(4.5, rgb(0, 0, 255)), + stop(7.0, rgb(255, 0, 0)) + ) + ) + ) + .withFilter(has("mag")); + } + + private CircleLayer createClusterLevelLayer(int level, int[][] layerColors) { + CircleLayer circles = new CircleLayer("cluster-" + level, "earthquakes"); + circles.setProperties( + circleColor(layerColors[level][1]), + circleRadius(18f) + ); + + Expression pointCount = toNumber(get("point_count")); + circles.setFilter( + level == 0 + ? all(has("point_count"), + gte(pointCount, literal(layerColors[level][0])) + ) : all(has("point_count"), + gt(pointCount, literal(layerColors[level][0])), + lt(pointCount, literal(layerColors[level - 1][0])) + ) + ); + return circles; + } + + private SymbolLayer createClusterTextLayer() { + return new SymbolLayer("count", "earthquakes") + .withProperties( + textField(Expression.toString(get("point_count"))), + textSize(12f), + textColor(Color.WHITE), + textIgnorePlacement(true), + textAllowOverlap(true) + ); } @Override @@ -136,82 +246,30 @@ public class GeoJsonClusteringActivity extends AppCompatActivity { } } - private void addClusteredGeoJsonSource(Style style) { - // Add a clustered source - try { - style.addSource( - new GeoJsonSource("earthquakes", - new URL("https://www.mapbox.com/mapbox-gl-js/assets/earthquakes.geojson"), - new GeoJsonOptions() - .withCluster(true) - .withClusterMaxZoom(14) - .withClusterRadius(50) - ) - ); - } catch (MalformedURLException malformedUrlException) { - Timber.e(malformedUrlException, "That's not an url... "); + private void updateClickOptionCounter() { + if (clickOptionCounter == 2) { + clickOptionCounter = 0; + } else { + clickOptionCounter++; } + } - // Add unclustered layer - int[][] layers = new int[][] { - new int[] {150, ResourcesCompat.getColor(getResources(), R.color.redAccent, getTheme())}, - new int[] {20, ResourcesCompat.getColor(getResources(), R.color.greenAccent, getTheme())}, - new int[] {0, ResourcesCompat.getColor(getResources(), R.color.blueAccent, getTheme())} - }; - - SymbolLayer unclustered = new SymbolLayer("unclustered-points", "earthquakes"); - unclustered.setProperties( - iconImage("icon-id"), - iconSize( - division( - get("mag"), literal(4.0f) - ) - ), - iconColor( - interpolate(exponential(1), get("mag"), - stop(2.0, rgb(0, 255, 0)), - stop(4.5, rgb(0, 0, 255)), - stop(7.0, rgb(255, 0, 0)) - ) - ) - ); - unclustered.setFilter(has("mag")); - style.addLayer(unclustered); - - for (int i = 0; i < layers.length; i++) { - // Add some nice circles - CircleLayer circles = new CircleLayer("cluster-" + i, "earthquakes"); - circles.setProperties( - circleColor(layers[i][1]), - circleRadius(18f) - ); - - Expression pointCount = toNumber(get("point_count")); - circles.setFilter( - i == 0 - ? all(has("point_count"), - gte(pointCount, literal(layers[i][0])) - ) : all(has("point_count"), - gt(pointCount, literal(layers[i][0])), - lt(pointCount, literal(layers[i - 1][0])) - ) - ); - style.addLayer(circles); + private void notifyClickOptionUpdate() { + if (clickOptionCounter == 0) { + Toast.makeText( + GeoJsonClusteringActivity.this, + "Clicking a cluster will zoom to the level where it dissolves", + Toast.LENGTH_SHORT).show(); + } else if (clickOptionCounter == 1) { + Toast.makeText( + GeoJsonClusteringActivity.this, + "Clicking a cluster will show the details of the cluster children", + Toast.LENGTH_SHORT).show(); + } else { + Toast.makeText( + GeoJsonClusteringActivity.this, + "Clicking a cluster will show the details of the cluster leaves with an offset and limit", + Toast.LENGTH_SHORT).show(); } - - // Add the count labels - SymbolLayer count = new SymbolLayer("count", "earthquakes"); - count.setProperties( - textField(Expression.toString(get("point_count"))), - textSize(12f), - textColor(Color.WHITE), - textIgnorePlacement(true), - textAllowOverlap(true) - ); - style.addLayer(count); - - - // Zoom out to start - mapboxMap.animateCamera(CameraUpdateFactory.zoomTo(1)); } } |