---
title: "MTLayer.sourceLayer | Mobile sdk | Mobile sdk android | Android"
description: "sourceLayer"
---

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# MTLayer.sourceLayer

abstract var [sourceLayer](https://docs-qmgv.pages.dev/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer/source-layer/): [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)?

Identifier of the source (main) layer to use.