增加异常捕获

android/src/main/java/com/amap/flutter/location/AMapFlutterLocationPlugin.java

@@ -104,7 +104,11 @@ public class AMapFlutterLocationPlugin implements FlutterPlugin, MethodCallHandl
         double lat2 = (double) argsMap.get("lat2");
         double lng2 = (double) argsMap.get("lng2");
         double distance = AMapLocationClientImpl.calculateDistance(lat1, lng1, lat2, lng2);
+        try {
             result.success(distance);
+        }catch (IllegalStateException e){
+            e.printStackTrace();
+        }
     }
 
     /**