1 files changed, 37 insertions, 1 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/Utils.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/Utils.java
index b352dc9190..178183ca09 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/Utils.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/Utils.java
@@ -3,11 +3,15 @@ package com.mapbox.mapboxsdk.location;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.drawable.Drawable;
+import android.graphics.drawable.GradientDrawable;
+import android.graphics.drawable.LayerDrawable;
 import android.location.Location;
+import android.os.Build;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 
 import com.mapbox.mapboxsdk.geometry.LatLng;
+import com.mapbox.mapboxsdk.log.Logger;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.Projection;
 
@@ -15,6 +19,8 @@ import static com.mapbox.mapboxsdk.location.LocationComponentConstants.INSTANT_L
 
 public final class Utils {
 
+  private static final String TAG = "Mbgl-com.mapbox.mapboxsdk.location.Utils";
+
   private Utils() {
     // Class should not be initialized
   }
@@ -52,12 +58,42 @@ public final class Utils {
     Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
     Canvas canvas = new Canvas(bitmap);
     drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
-    drawable.draw(canvas);
+    try {
+      drawable.draw(canvas);
+    } catch (IllegalArgumentException ex) {
+      if (ex.getMessage().equals("radius must be > 0") && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+        Logger.w(TAG,
+          "Location's shadow gradient drawable has a radius <= 0px, resetting to 1px in order to avoid crashing");
+        ensureShadowGradientRadius(drawable);
+        return generateShadow(drawable, elevation);
+      } else {
+        throw ex;
+      }
+    }
     bitmap = Bitmap.createScaledBitmap(bitmap,
       toEven(width + elevation), toEven(height + elevation), false);
     return bitmap;
   }
 
+  /**
+   * We need to ensure that the radius of any {@link GradientDrawable} is greater than 0 for API levels < 21.
+   *
+   * @see <a href=https://github.com/mapbox/mapbox-gl-native/issues/15026>mapbox-gl-native-#15026</a>
+   */
+  private static void ensureShadowGradientRadius(Drawable drawable) {
+    if (drawable instanceof GradientDrawable) {
+      ((GradientDrawable) drawable).setGradientRadius(1);
+    } else if (drawable instanceof LayerDrawable) {
+      LayerDrawable layerDrawable = (LayerDrawable) drawable;
+      for (int i = 0; i < layerDrawable.getNumberOfLayers(); i++) {
+        Drawable layers = layerDrawable.getDrawable(i);
+        if (layers instanceof GradientDrawable) {
+          ((GradientDrawable) layers).setGradientRadius(1);
+        }
+      }
+    }
+  }
+
   static float calculateZoomLevelRadius(@NonNull MapboxMap mapboxMap, @Nullable Location location) {
     if (location == null) {
       return 0;