dictionary - Kotlin with Map in Android - 


override fun oncreateview(inflater: layoutinflater?, container: viewgroup?, savedinstancestate: bundle?): view { var view: view = inflater?.inflate(r.layout.map_fragment, null)!!  var mapfragment : supportmapfragment?=null mapfragment= fragmentmanager.findfragmentbyid(r.id.map) supportmapfragment mapfragment.getmapasync(this)  return view }

logcat :

fatal exception: main kotlin.typecastexception: null cannot cast non-null type  com.google.android.gms.maps.supportmapfragment @ example.com.kotlinexamplebydimple.mapfragment.oncreateview(mapfragment.kt:36)

on line error showing :

mapfragment= fragmentmanager.findfragmentbyid(r.id.map) supportmapfragment

you declared mapfragment nullable have deal it:

var mapfragment : supportmapfragment?=null mapfragment = fragmentmanager.findfragmentbyid(r.id.map) supportmapfragment? mapfragment?.getmapasync(this)

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