---
title: "fillOpacity | Mobile sdk | Mobile sdk android | Android"
description: "fillOpacity"
---

# fillOpacity

val [fillOpacity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.helpers/-m-t-polygon-layer-options/fill-opacity/): [MTNumberOrZoomNumberValues](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.helpers/-m-t-number-or-zoom-number-values/)? = null