1 files changed, 32 insertions, 1 deletions
diff --git a/android/java/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxgl/annotations/Annotation.java b/android/java/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxgl/annotations/Annotation.java
index c4dea205e0..9cddf99847 100644
--- a/android/java/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxgl/annotations/Annotation.java
+++ b/android/java/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxgl/annotations/Annotation.java
@@ -2,7 +2,7 @@ package com.mapbox.mapboxgl.annotations;
 
 import com.mapbox.mapboxgl.views.MapView;
 
-public abstract class Annotation {
+public abstract class Annotation implements Comparable<Annotation> {
 
     /**
      * The annotation id
@@ -59,4 +59,35 @@ public abstract class Annotation {
 //    public void setZIndex(float zIndex) {
 //
 //    }
+
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == null) {
+            return false;
+        }
+
+        if (o instanceof Annotation) {
+            Annotation comp = (Annotation) o;
+            return id == comp.id;
+        }
+        return false;
+    }
+
+    @Override
+    public int compareTo(Annotation annotation) {
+
+        if (annotation == null) {
+            return -1;
+        }
+
+        if (id < annotation.getId()) {
+            return 1;
+        } else if (id > annotation.getId()) {
+            return -1;
+        }
+
+        // Equal
+        return 0;
+    }
 }