Implement icon-anchor property

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Property.java

@@ -160,6 +160,62 @@ public final class Property {
   @Retention(RetentionPolicy.SOURCE)
   public @interface ICON_TEXT_FIT {}
 
+  // ICON_ANCHOR: Part of the icon placed closest to the anchor.
+
+  /**
+   * The center of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_CENTER = "center";
+  /**
+   * The left side of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_LEFT = "left";
+  /**
+   * The right side of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_RIGHT = "right";
+  /**
+   * The top of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_TOP = "top";
+  /**
+   * The bottom of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_BOTTOM = "bottom";
+  /**
+   * The top left corner of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_TOP_LEFT = "top-left";
+  /**
+   * The top right corner of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_TOP_RIGHT = "top-right";
+  /**
+   * The bottom left corner of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_BOTTOM_LEFT = "bottom-left";
+  /**
+   * The bottom right corner of the icon is placed closest to the anchor.
+   */
+  public static final String ICON_ANCHOR_BOTTOM_RIGHT = "bottom-right";
+
+  /**
+   * Part of the icon placed closest to the anchor.
+   */
+  @StringDef({
+      ICON_ANCHOR_CENTER,
+      ICON_ANCHOR_LEFT,
+      ICON_ANCHOR_RIGHT,
+      ICON_ANCHOR_TOP,
+      ICON_ANCHOR_BOTTOM,
+      ICON_ANCHOR_TOP_LEFT,
+      ICON_ANCHOR_TOP_RIGHT,
+      ICON_ANCHOR_BOTTOM_LEFT,
+      ICON_ANCHOR_BOTTOM_RIGHT,
+    })
+  @Retention(RetentionPolicy.SOURCE)
+  public @interface ICON_ANCHOR {}
+
   // ICON_PITCH_ALIGNMENT: Orientation of icon when map is pitched.
 
   /**

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyFactory.java

@@ -1881,6 +1881,29 @@ public class PropertyFactory {
     return new LayoutPropertyValue<>("icon-offset", function);
   }
 
+  /**
+   * Part of the icon placed closest to the anchor.
+   *
+   * @param value a String value
+   * @return property wrapper around String
+   */
+  public static PropertyValue<String> iconAnchor(@Property.ICON_ANCHOR String value) {
+    return new LayoutPropertyValue<>("icon-anchor", value);
+  }
+
+
+
+  /**
+   * Part of the icon placed closest to the anchor.
+   *
+   * @param <T> the function input type
+   * @param function a wrapper function for String
+   * @return property wrapper around a String function
+   */
+  public static <T> PropertyValue<Function<T, String>> iconAnchor(Function<T, String> function) {
+    return new LayoutPropertyValue<>("icon-anchor", function);
+  }
+
   /**
    * Orientation of icon when map is pitched.
    *

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/SymbolLayer.java

@@ -251,6 +251,16 @@ public class SymbolLayer extends Layer {
     return (PropertyValue<Float[]>) new PropertyValue("icon-offset", nativeGetIconOffset());
   }
 
+  /**
+   * Get the IconAnchor property
+   *
+   * @return property wrapper value around String
+   */
+  @SuppressWarnings("unchecked")
+  public PropertyValue<String> getIconAnchor() {
+    return (PropertyValue<String>) new PropertyValue("icon-anchor", nativeGetIconAnchor());
+  }
+
   /**
    * Get the IconPitchAlignment property
    *
@@ -901,6 +911,8 @@ public class SymbolLayer extends Layer {
 
   private native Object nativeGetIconOffset();
 
+  private native Object nativeGetIconAnchor();
+
   private native Object nativeGetIconPitchAlignment();
 
   private native Object nativeGetTextPitchAlignment();