markerCoordinates = new ArrayList<>();
Feature featureOne = Feature.fromGeometry(
Point.fromLngLat(45.37353515625, -14.32825967774));
featureOne.addStringProperty(PROPERTY_ID, "1");
featureOne.addBooleanProperty(PROPERTY_SELECTED, false);
markerCoordinates.add(featureOne);
Feature featureTwo = Feature.fromGeometry(
Point.fromLngLat(50.1416015625, -20.200346006493735));
featureTwo.addStringProperty(PROPERTY_ID, "2");
featureTwo.addBooleanProperty(PROPERTY_SELECTED, false);
markerCoordinates.add(featureTwo);
Feature featureThree = Feature.fromGeometry(
Point.fromLngLat(42.86865234375, -24.266997288418157));
featureThree.addStringProperty(PROPERTY_ID, "3");
featureThree.addBooleanProperty(PROPERTY_SELECTED, false);
markerCoordinates.add(featureThree);
featureCollection = FeatureCollection.fromFeatures(markerCoordinates);
}
@Override
public boolean onMapClick(@NonNull LatLng point) {
handleClickIcon(mapboxMap.getProjection().toScreenLocation(point));
return true;
}
/**
* This method handles click events for both layers.
*
* The PROPERTY_SELECTED feature property is set to its opposite, so
* that the visual toggling between circles and icons is correct.
*
* @param screenPoint the point on screen clicked
*/
private boolean handleClickIcon(PointF screenPoint) {
List selectedCircleFeatureList = mapboxMap.queryRenderedFeatures(screenPoint, CIRCLE_LAYER_ID);
List selectedMarkerFeatureList = mapboxMap.queryRenderedFeatures(screenPoint, MARKER_LAYER_ID);
if (!selectedCircleFeatureList.isEmpty()) {
Feature selectedCircleFeature = selectedCircleFeatureList.get(0);
for (int x = 0; x < featureCollection.features().size(); x++) {
if (selectedCircleFeature.getStringProperty(PROPERTY_ID)
.equals(featureCollection.features().get(x).getStringProperty(PROPERTY_ID))) {
if (featureSelectStatusIsTrue(selectedCircleFeature)) {
setFeatureSelectState(x, featureCollection.features().get(x), true);
} else {
setSelected(x);
}
}
}
} else if (!selectedMarkerFeatureList.isEmpty()) {
Feature selectedMarkerFeature = selectedMarkerFeatureList.get(0);
for (int x = 0; x < featureCollection.features().size(); x++) {
if (selectedMarkerFeature.getStringProperty(PROPERTY_ID)
.equals(featureCollection.features().get(x).getStringProperty(PROPERTY_ID))) {
if (featureSelectStatusIsTrue(selectedMarkerFeature)) {
setFeatureSelectState(x, featureCollection.features().get(x), false);
} else {
setSelected(x);
}
}
}
} else {
// Reset all features to unselected so that all circles are shown and no icons are shown
for (int x = 0; x < featureCollection.features().size(); x++) {
setFeatureSelectState(x, featureCollection.features().get(x), false);
}
}
return true;
}
/**
* Set a feature selected state.
*
* @param index the index of selected feature
*/
private void setSelected(int index) {
if (featureCollection.features() != null) {
Feature feature = featureCollection.features().get(index);
setFeatureSelectState(index, feature, true);
refreshSource();
}
}
/**
* Updates the display of data on the map after the FeatureCollection has been modified
*/
private void refreshSource() {
mapboxMap.getStyle(new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
GeoJsonSource geoJsonSource = style.getSourceAs(SOURCE_ID);
if (geoJsonSource != null && featureCollection != null) {
geoJsonSource.setGeoJson(featureCollection);
}
}
});
}
/**
* Selects the state of a feature
*
* @param feature the feature to be selected.
*/
private void setFeatureSelectState(int index, Feature feature, boolean selectedState) {
feature.addBooleanProperty(PROPERTY_SELECTED, selectedState);
featureCollection.features().set(index, feature);
refreshSource();
}
/**
* Checks whether a Feature's boolean "selected" property is true or false
*
* @param selectedFeature the specific Feature to check
* @return true if "selected" is true. False if the boolean property is false.
*/
private boolean featureSelectStatusIsTrue(Feature selectedFeature) {
if (featureCollection == null) {
return false;
}
return selectedFeature.getBooleanProperty(PROPERTY_SELECTED);
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mapboxMap != null) {
mapboxMap.removeOnMapClickListener(this);
}
mapView.onDestroy();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
}
```