[android] test activity for runtime changes to symbols

platform/android/MapboxGLAndroidSDKTestApp/src/main/AndroidManifest.xml

@@ -338,7 +338,15 @@
             android:label="@string/activity_circle">
             <meta-data
                 android:name="@string/category"
-                android:value="@string/category_style" />
+                android:value="@string/category_style"/>
+        </activity>
+        <activity
+            android:name=".activity.style.SymbolLayerActivity"
+            android:description="@string/description_symbol_layer"
+            android:label="@string/activity_symbol_layer">
+            <meta-data
+                android:name="@string/category"
+                android:value="@string/category_style"/>
         </activity>
         <activity
             android:name=".activity.style.GeoJsonClusteringActivity"

platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/style/SymbolLayerActivity.java

@@ -0,0 +1,214 @@
+package com.mapbox.mapboxsdk.testapp.activity.style;
+
+import android.graphics.BitmapFactory;
+import android.graphics.Color;
+import android.graphics.PointF;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.Menu;
+import android.view.MenuItem;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
+import com.mapbox.mapboxsdk.geometry.LatLng;
+import com.mapbox.mapboxsdk.maps.MapView;
+import com.mapbox.mapboxsdk.maps.MapboxMap;
+import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
+import com.mapbox.mapboxsdk.style.layers.Layer;
+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 java.util.Arrays;
+import java.util.List;
+
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.circleColor;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.circleRadius;
+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.textColor;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textField;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textFont;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textSize;
+
+/**
+ * Example to test runtime manipulation of symbol layers
+ */
+public class SymbolLayerActivity extends AppCompatActivity implements MapboxMap.OnMapClickListener {
+
+    public static final String MARKER_SOURCE = "marker-source";
+    public static final String MARKER_LAYER = "marker-layer";
+    private MapboxMap mapboxMap;
+    private MapView mapView;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_symbollayer);
+
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(true);
+            actionBar.setDisplayShowHomeEnabled(true);
+        }
+
+        mapView = (MapView) findViewById(R.id.mapView);
+        mapView.onCreate(savedInstanceState);
+        mapView.getMapAsync(new OnMapReadyCallback() {
+            @Override
+            public void onMapReady(@NonNull final MapboxMap map) {
+                mapboxMap = map;
+
+                //Add a image for the makers
+                mapboxMap.addImage("my-marker-image", BitmapFactory.decodeResource(SymbolLayerActivity.this.getResources(), R.drawable.mapbox_marker_icon_default));
+
+                //Add a source
+                FeatureCollection markers = FeatureCollection.fromFeatures(new Feature[]{
+                        Feature.fromGeometry(Point.fromCoordinates(new double[]{4.91638, 52.35673}), featureProperties("Marker 1")),
+                        Feature.fromGeometry(Point.fromCoordinates(new double[]{4.91638, 52.34673}), featureProperties("Marker 2"))
+                });
+                mapboxMap.addSource(new GeoJsonSource(MARKER_SOURCE, markers));
+
+                //Add the symbol-layer
+                mapboxMap.addLayer(
+                        new SymbolLayer(MARKER_LAYER, MARKER_SOURCE)
+                                .withProperties(
+                                        iconImage("my-marker-image"),
+                                        iconAllowOverlap(true),
+                                        textField("{title}"),
+                                        textColor(Color.RED),
+                                        textSize(10f)
+                                )
+                );
+
+                //Show
+                mapboxMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(52.35273, 4.91638), 14));
+
+                //Set a click-listener so we can manipulate the map
+                mapboxMap.setOnMapClickListener(SymbolLayerActivity.this);
+            }
+        });
+    }
+
+    @Override
+    public void onMapClick(@NonNull LatLng point) {
+        //Query which features are clicked
+        PointF screenLoc = mapboxMap.getProjection().toScreenLocation(point);
+        List<Feature> features = mapboxMap.queryRenderedFeatures(screenLoc, MARKER_LAYER);
+
+        SymbolLayer layer = mapboxMap.getLayerAs(MARKER_LAYER);
+        if (features.size() == 0) {
+            //Reset
+            layer.setProperties(iconSize(1f));
+        } else {
+            layer.setProperties(iconSize(3f));
+        }
+    }
+
+    private void toggleTextSize() {
+        SymbolLayer layer = mapboxMap.getLayerAs(MARKER_LAYER);
+        layer.setProperties(layer.getTextSize().getValue() > 10 ? textSize(10f) : textSize(20f));
+    }
+
+    private void toggleTextField() {
+        SymbolLayer layer = mapboxMap.getLayerAs(MARKER_LAYER);
+        layer.setProperties("{title}".equals(layer.getTextField().getValue()) ? textField("āA") : textField("{title}"));
+    }
+
+    private void toggleTextFont() {
+        SymbolLayer layer = mapboxMap.getLayerAs(MARKER_LAYER);
+
+        String[] fonts = layer.getTextFont().getValue();
+        if (fonts == null || fonts.length == 0 || Arrays.asList(fonts).contains("Arial Unicode MS Regular")) {
+            layer.setProperties(textFont(new String[]{"DIN Offc Pro Bold", "Arial Unicode MS Bold"}));
+        } else {
+            layer.setProperties(textFont(new String[]{"DIN Offc Pro Medium", "Arial Unicode MS Regular"}));
+        }
+    }
+
+    private JsonObject featureProperties(String title) {
+        JsonObject object = new JsonObject();
+        object.add("title", new JsonPrimitive(title));
+        return object;
+    }
+
+    @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();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_symbol_layer, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                onBackPressed();
+                return true;
+            case R.id.action_toggle_text_size:
+                toggleTextSize();
+                return true;
+            case R.id.action_toggle_text_field:
+                toggleTextField();
+                return true;
+            case R.id.action_toggle_text_font:
+                toggleTextFont();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+}

platform/android/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_symbollayer.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                xmlns:app="http://schemas.android.com/apk/res-auto"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="vertical">
+
+    <android.support.v7.widget.Toolbar
+        android:id="@+id/toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+        android:background="@color/primary"
+        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
+
+    <com.mapbox.mapboxsdk.maps.MapView
+        android:id="@id/mapView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_below="@id/toolbar"
+        app:mapbox_styleUrl="@string/mapbox_style_mapbox_streets"/>
+
+</RelativeLayout>

platform/android/MapboxGLAndroidSDKTestApp/src/main/res/menu/menu_symbol_layer.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/action_toggle_text_size"
+        android:title="Toggle text size"/>
+
+    <item
+        android:id="@+id/action_toggle_text_field"
+        android:title="Toggle text field contents"/>
+
+    <item
+        android:id="@+id/action_toggle_text_font"
+        android:title="Toggle text font"/>
+
+</menu>

platform/android/MapboxGLAndroidSDKTestApp/src/main/res/values/strings.xml

@@ -68,6 +68,7 @@
     <string name="activity_query_rendered_features_box_symbol_count">Count symbols in box</string>
     <string name="activity_query_rendered_features_box_highlight">Highlight features in box</string>
     <string name="activity_circle">Add Circle</string>
+    <string name="activity_symbol_layer">Symbols</string>
     <string name="activity_add_sprite">Add Custom Sprite</string>
     <string name="activity_navigation_drawer">Android SDK View integration</string>
     <string name="activity_video_view">Video View</string>
@@ -113,6 +114,7 @@
     <string name="description_viewpager">Use SupportMapFragments in a ViewPager</string>
     <string name="description_runtime_style">Adopt the map style on the fly</string>
     <string name="description_circle">Use GeoJson source to show a circle</string>
+    <string name="description_symbol_layer">Manipulate symbols at runtime</string>
     <string name="description_custom_sprite">Use a custom sprite in a Symbol Layer</string>
     <string name="description_geojson_clustering">Use GeoJson sources and dynamic layers to cluster information</string>
     <string name="description_geojson_realtime">Use realtime GeoJSON data streams to move a symbol on your map</string>