1 files changed, 18 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java
index 4fcb91033c..c1ea669418 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java
@@ -11,6 +11,8 @@ import com.mapbox.services.android.telemetry.constants.GeoConstants;
 import java.util.ArrayList;
 import java.util.List;
 
+import static android.R.attr.id;
+
 /**
  * A geographical area representing a latitude/longitude aligned rectangle.
  * <p>
@@ -231,6 +233,22 @@ public class LatLngBounds implements Parcelable {
     return new LatLngBounds(latNorth, lonEast, latSouth, lonWest);
   }
 
+  private static double lat_(int z, int y) {
+    double n = Math.PI - 2.0 * Math.PI * y / Math.pow(2.0, z);
+    return Math.toDegrees(Math.atan(0.5 * (Math.exp(n) - Math.exp(-n))));
+  }
+
+  private static double lon_(int z, int x) {
+    return x / Math.pow(2.0, z) * 360.0 - GeoConstants.MAX_LONGITUDE;
+  }
+
+  /**
+   * Constructs a LatLngBounds from a Tile identifier.
+   */
+  public static LatLngBounds from(int z, int x, int y) {
+    return new LatLngBounds(lat_(z, y), lon_(z, x + 1), lat_(z, y + 1), lon_(z, x));
+  }
+
   /**
    * Constructs a LatLngBounds from current bounds with an additional latitude-longitude pair.
    *