Examples

Spinning icon

activity_spinning_symbol_layer_icon
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:mapbox="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".examples.camera.BoundingBoxCameraActivity">
<com.mapbox.mapboxsdk.maps.MapView
android:id="@+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent"
mapbox:mapbox_cameraTargetLat="22.937809"
mapbox:mapbox_cameraTargetLng="-66.444049"
mapbox:mapbox_cameraZoom="3" />
</FrameLayout>
SpinningSymbolLayerIconActivity
package com.mapbox.mapboxandroiddemo.examples.labs;
import android.animation.ValueAnimator;
import android.os.Bundle;
import android.view.animation.LinearInterpolator;
import com.mapbox.mapboxandroiddemo.R;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.style.layers.Layer;
import com.mapbox.mapboxsdk.style.layers.PropertyFactory;
import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.mapboxsdk.utils.BitmapUtils;
import java.net.URI;
import java.net.URISyntaxException;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import timber.log.Timber;
import static com.mapbox.mapboxsdk.style.layers.Property.ICON_PITCH_ALIGNMENT_MAP;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconAllowOverlap;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconPitchAlignment;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconRotate;
/**
* Use an Android-system ValueAnimator and the Maps SDK's runtime styling functionality to
* continually updated a SymbolLayer icons' rotation. This creates a spinning effect.
*/
public class SpinningSymbolLayerIconActivity extends AppCompatActivity implements OnMapReadyCallback {
private static final String SOURCE_ID = "SOURCE_ID";
private static final String ICON_ID = "ICON_ID";
private static final String LAYER_ID = "LAYER_ID";
private final int desiredSecondsPerOneFull360Spin = 1;
private final int desiredMillisecondsPerOneFull360Spin = desiredSecondsPerOneFull360Spin * 1000;
private MapView mapView;
private MapboxMap mapboxMap;
private ValueAnimator iconSpinningAnimator;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Mapbox access token is configured here. This needs to be called either in your application
// object or in the same activity which contains the mapview.
Mapbox.getInstance(this, getString(R.string.access_token));
// This contains the MapView in XML and needs to be called after the access token is configured.
setContentView(R.layout.activity_spinning_symbol_layer_icon);
// Initialize the MapView
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
}
@Override
public void onMapReady(final MapboxMap mapboxMap) {
this.mapboxMap = mapboxMap;
// Create a Style object
mapboxMap.setStyle(new Style.Builder().fromUri(Style.MAPBOX_STREETS)
.withImage(ICON_ID, BitmapUtils.getBitmapFromDrawable(
getResources().getDrawable(R.drawable.hurricane_icon))), new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
try {
// Adding a GeoJson source for the SymbolLayer icons.
style.addSource(new GeoJsonSource(SOURCE_ID, new URI("asset://spinning_icon.geojson")));
// Adding the actual SymbolLayer to the map style.
style.addLayer(new SymbolLayer(LAYER_ID, SOURCE_ID)
.withProperties(PropertyFactory.iconImage(ICON_ID),
iconAllowOverlap(true),
iconPitchAlignment(ICON_PITCH_ALIGNMENT_MAP)));
startIconSpinningAnimation();
} catch (URISyntaxException exception) {
Timber.d(exception);
}
}
});
}
/**
* Set up and start the icon spinning animation. The Android system ValueAnimator emits a new value, which is
* used as the SymbolLayer icons' rotation value. The value is animated from 360 to 0 because of the
* hurricane icon's spin design. You might have to adjust the values depending on the design of your icon.
*/
private void startIconSpinningAnimation() {
if (iconSpinningAnimator != null) {
iconSpinningAnimator.cancel();
}
iconSpinningAnimator = ValueAnimator.ofFloat(360, 0);
iconSpinningAnimator.setDuration(desiredMillisecondsPerOneFull360Spin);
iconSpinningAnimator.setInterpolator(new LinearInterpolator());
iconSpinningAnimator.setRepeatCount(ValueAnimator.INFINITE);
iconSpinningAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
// Retrieve the new animation number to use as the map camera bearing value
Float newIconRotateValue = (Float) valueAnimator.getAnimatedValue();
mapboxMap.getStyle(new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
Layer iconSymbolLayer = style.getLayerAs(LAYER_ID);
iconSymbolLayer.setProperties(
iconRotate(newIconRotateValue)
);
}
});
}
});
iconSpinningAnimator.start();
}
@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 onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (iconSpinningAnimator != null) {
iconSpinningAnimator.cancel();
}
mapView.onDestroy();
}
}
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