Kotlin中未解决的引用-LocationListener-onLocationChanged

Question

我收到一条错误消息：未解决的引用：mListener 从下面的代码中： 一旦获得第一个修复程序，我想停止locationupdates。您能帮忙解决吗？

var mManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager
var mListener = object : LocationListener {
    override fun onLocationChanged(location: Location) {
        doSomeWork()
        mManager.removeUpdates(mListener)
    }

    override fun onStatusChanged(provider: String?, status: Int, extras: Bundle?) {

    }

    override fun onProviderEnabled(provider: String?) {

    }

    override fun onProviderDisabled(provider: String?) {

    }
}
mManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0f, mListener)