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path: root/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java
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Diffstat (limited to 'platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java')
-rw-r--r--platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java202
1 files changed, 202 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java
new file mode 100644
index 0000000000..4a6e62ef7d
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/ZoomFunctionSymbolLayerActivity.java
@@ -0,0 +1,202 @@
+package com.mapbox.mapboxsdk.testapp.activity.style;
+
+import android.graphics.PointF;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.view.Menu;
+import android.view.MenuItem;
+
+import com.google.gson.JsonObject;
+import com.mapbox.mapboxsdk.maps.MapView;
+import com.mapbox.mapboxsdk.maps.MapboxMap;
+import com.mapbox.mapboxsdk.style.layers.Property;
+import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
+import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
+import com.mapbox.mapboxsdk.testapp.R;
+import com.mapbox.services.commons.geojson.Feature;
+import com.mapbox.services.commons.geojson.FeatureCollection;
+import com.mapbox.services.commons.geojson.Point;
+import com.mapbox.services.commons.models.Position;
+
+import java.util.List;
+
+import timber.log.Timber;
+
+import static com.mapbox.mapboxsdk.style.functions.Function.property;
+import static com.mapbox.mapboxsdk.style.functions.Function.zoom;
+import static com.mapbox.mapboxsdk.style.functions.stops.Stop.stop;
+import static com.mapbox.mapboxsdk.style.functions.stops.Stops.categorical;
+import static com.mapbox.mapboxsdk.style.functions.stops.Stops.interval;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconAllowOverlap;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconSize;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.visibility;
+
+/**
+ * Test activity showcasing changing the icon with a zoom function and adding selection state to a SymbolLayer.
+ */
+public class ZoomFunctionSymbolLayerActivity extends AppCompatActivity {
+
+ private static final String LAYER_ID = "symbolLayer";
+ private static final String SOURCE_ID = "poiSource";
+ private static final String BUS_MAKI_ICON_ID = "bus-11";
+ private static final String CAFE_MAKI_ICON_ID = "cafe-11";
+ private static final String KEY_PROPERTY_SELECTED = "selected";
+ private static final float ZOOM_STOP_MIN_VALUE = 7.0f;
+ private static final float ZOOM_STOP_MAX_VALUE = 12.0f;
+
+ private MapView mapView;
+ private MapboxMap mapboxMap;
+ private GeoJsonSource source;
+ private SymbolLayer layer;
+
+ private boolean isInitialPosition = true;
+ private boolean isSelected = false;
+ private boolean isShowingSymbolLayer = true;
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_zoom_symbol_layer);
+
+ mapView = (MapView) findViewById(R.id.mapView);
+ mapView.onCreate(savedInstanceState);
+ mapView.getMapAsync(map -> {
+ mapboxMap = map;
+ updateSource();
+ addLayer();
+ addMapClickListener();
+ });
+ }
+
+ private void updateSource() {
+ FeatureCollection featureCollection = createFeatureCollection();
+ if (source != null) {
+ source.setGeoJson(featureCollection);
+ } else {
+ source = new GeoJsonSource(SOURCE_ID, featureCollection);
+ mapboxMap.addSource(source);
+ }
+ }
+
+ private void toggleSymbolLayerVisibility() {
+ layer.setProperties(
+ visibility(isShowingSymbolLayer ? Property.NONE : Property.VISIBLE)
+ );
+ isShowingSymbolLayer = !isShowingSymbolLayer;
+ }
+
+ private FeatureCollection createFeatureCollection() {
+ Position position = isInitialPosition
+ ? Position.fromCoordinates(-74.01618140, 40.701745)
+ : Position.fromCoordinates(-73.988097, 40.749864);
+
+ Point point = Point.fromCoordinates(position);
+ Feature feature = Feature.fromGeometry(point);
+ JsonObject properties = new JsonObject();
+ properties.addProperty(KEY_PROPERTY_SELECTED, isSelected);
+ feature.setProperties(properties);
+ return FeatureCollection.fromFeatures(new Feature[] {feature});
+ }
+
+ private void addLayer() {
+ layer = new SymbolLayer(LAYER_ID, SOURCE_ID);
+ layer.setProperties(
+ iconImage(
+ zoom(
+ interval(
+ stop(ZOOM_STOP_MIN_VALUE, iconImage(BUS_MAKI_ICON_ID)),
+ stop(ZOOM_STOP_MAX_VALUE, iconImage(CAFE_MAKI_ICON_ID))
+ )
+ )
+ ),
+ iconSize(
+ property(
+ KEY_PROPERTY_SELECTED,
+ categorical(
+ stop(true, iconSize(3.0f)),
+ stop(false, iconSize(1.0f))
+ )
+ )
+ ),
+ iconAllowOverlap(true)
+ );
+ mapboxMap.addLayer(layer);
+ }
+
+ private void addMapClickListener() {
+ mapboxMap.setOnMapClickListener(point -> {
+ PointF screenPoint = mapboxMap.getProjection().toScreenLocation(point);
+ List<Feature> featureList = mapboxMap.queryRenderedFeatures(screenPoint, LAYER_ID);
+ if (!featureList.isEmpty()) {
+ Feature feature = featureList.get(0);
+ boolean selectedNow = feature.getBooleanProperty(KEY_PROPERTY_SELECTED);
+ isSelected = !selectedNow;
+ updateSource();
+ } else {
+ Timber.e("No features found");
+ }
+ });
+ }
+
+ @Override
+ public boolean onCreateOptionsMenu(Menu menu) {
+ getMenuInflater().inflate(R.menu.menu_symbols, menu);
+ return true;
+ }
+
+ @Override
+ public boolean onOptionsItemSelected(MenuItem item) {
+ if (mapboxMap != null) {
+ if (item.getItemId() == R.id.menu_action_change_location) {
+ isInitialPosition = !isInitialPosition;
+ updateSource();
+ } else if (item.getItemId() == R.id.menu_action_toggle_source) {
+ toggleSymbolLayerVisibility();
+ }
+ }
+ return super.onOptionsItemSelected(item);
+ }
+
+ @Override
+ protected void onStart() {
+ super.onStart();
+ mapView.onStart();
+ }
+
+ @Override
+ protected void onResume() {
+ super.onResume();
+ mapView.onResume();
+ }
+
+ @Override
+ protected void onPause() {
+ super.onPause();
+ mapView.onPause();
+ }
+
+ @Override
+ protected void onStop() {
+ super.onStop();
+ mapView.onStop();
+ }
+
+ @Override
+ public void onSaveInstanceState(Bundle outState) {
+ super.onSaveInstanceState(outState);
+ mapView.onSaveInstanceState(outState);
+ }
+
+ @Override
+ public void onLowMemory() {
+ super.onLowMemory();
+ mapView.onLowMemory();
+ }
+
+ @Override
+ public void onDestroy() {
+ super.onDestroy();
+ mapView.onDestroy();
+ }
+} \ No newline at end of file
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