google maps - android: 'inconvertible types' error on googlemap setup -

there tutorial setup google map on android here: https://gist.github.com/joshdholtz/4522551

i can run in application.

but google replace getmapasync() getmap()

here new google tutorial: https://developers.google.com/maps/documentation/android-api/start

i try convert fragment:

public class mfragment extends fragment implements onmapreadycallback {      mapview gmapview;     googlemap gmap = null;      @override     public view oncreateview(layoutinflater inflater, viewgroup container,                              bundle savedinstancestate) {         view view = inflater.inflate(r.layout.m_layout, container, false);          gmapview = (mapview) view.findviewbyid(r.id.map);         gmapview.getmapasync(this);          return view;     }      @override     public void onmapready(googlemap map) {         gmap = map;         gmap.setmaptype(googlemap.map_type_hybrid);         gmap.movecamera(cameraupdatefactory.newlatlngzoom(new                 latlng(49.39,-124.83), 20));     } } 

m_layout.xml:

<fragment xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:id="@+id/map"     tools:context="mfragment"     android:name="com.google.android.gms.maps.supportmapfragment" /> 

but in debug level got error:

error:(24, 75) error: inconvertible types required: mapfragment found:    fragment 

on line:

gmapfragment = (mapfragment) getfragmentmanager().findfragmentbyid(r.id.map); 

what's wrong?

a mapview not supportmapfragment.

you have 2 options, either use nested supportmapfragment, or make fragment extend supportmapfragment.

for first option, key use getchildfragmentmanager() in order supportmapfragment:

public class mfragment extends fragment implements             onmapreadycallback {      googlemap gmap;     supportmapfragment mapfrag;      public mfragment () {     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container,                              bundle savedinstancestate) {          view rootview = inflater.inflate(r.layout.m_layout, container, false);          mapfrag = ((supportmapfragment) getchildfragmentmanager().findfragmentbyid(r.id.map));         mapfrag.getmapasync(this);          return rootview;     }      @override     public void onmapready(googlemap map) {       gmap = map;       gmap.setmaptype(googlemap.map_type_hybrid);       gmap.movecamera(cameraupdatefactory.newlatlngzoom(new                                                         latlng(49.39,-124.83), 20));     } }  

with second option, fragment extends supportmapfragment, , there no need inflate layout xml:

public class mfragment  extends supportmapfragment implements             onmapreadycallback {    googlemap gmap;    public mfragment() {   }    @override   public void onresume() {     super.onresume();     setupmapifneeded();   }    private void setupmapifneeded() {      if (gmap == null) {       getmapasync(this);     }   }    @override   public void onmapready(googlemap map) {     gmap = map;     gmap.setmaptype(googlemap.map_type_hybrid);     gmap.movecamera(cameraupdatefactory.newlatlngzoom(new                                                       latlng(49.39,-124.83), 20));   } } 

for more details might in next steps, take @ this answer.