android - Multiple Google Maps Lite in FirebaseRecycler -


i tried make running, thing got grey grid google logo on in left bottom corner in place of fragment. maps intented displayed in cardview loaded firebaserecycleradapter. there no errors thrown , api key correct. when scroll items fast , down several times, maps appear load on each scroll. when left without scrolling, nothing loads.

the card's xml is:

linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:card_view="http://schemas.android.com/apk/res-auto" xmlns:map="http://schemas.android.com/tools" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent">  <android.support.v7.widget.cardview     android:layout_width="fill_parent"     android:layout_height="wrap_content"     card_view:cardusecompatpadding="true"     card_view:cardelevation="1dp"     card_view:cardcornerradius="0dp"     android:layout_marginleft="-3dp"     android:layout_marginright="-3dp"     android:id="@+id/cv">     <com.google.android.gms.maps.mapview                  class="com.google.android.gms.maps.mapfragment"                 android:id="@+id/maplite"                 android:layout_width="match_parent"                 android:layout_height="150dp"                 map:maptype="normal"                 map:litemode="true"/>     </android.support.v7.widget.cardview> </linearlayout>

the code firebase adapter follows:

adapter = new firebaserecycleradapter<post, postviewholder>(post.class, r.layout.card_view_item, postviewholder.class, ref.child("message").child(currentgroupkey)) {      @override     protected void populateviewholder(final postviewholder postviewholder, final post post, int position) {         super.populateviewholder(postviewholder, post, position);     } };

and code postviewholder: 

public class postviewholder extends recyclerview.viewholder implements onmapreadycallback {     public mapview mapview;       public postviewholder(view itemview) {        super(itemview);          mapview = (mapview) itemview.findviewbyid(r.id.maplite);          mapview.oncreate(null);         mapview.getmapasync(this);     }      @override     public void onmapready(googlemap googlemap) {         cameraupdate updatecamera = cameraupdatefactory.newcameraposition(new cameraposition(new latlng(40.712784, -74.005941), 10, 0f, 0));         googlemap.movecamera(updatecamera);     } }

does know may issue?

i've found answer! problem wrong namespace in xml. i've found resolution studying example: https://github.com/saxman/android-map_list. bellow post right version of files showed above in case have similar problem:

card's xml:

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:card_view="http://schemas.android.com/apk/res-auto" xmlns:map="http://schemas.android.com/apk/res-auto" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.v7.widget.cardview     android:layout_width="fill_parent"     android:layout_height="wrap_content"     card_view:cardusecompatpadding="true"     card_view:cardelevation="1dp"     card_view:cardcornerradius="0dp"     android:layout_marginleft="-3dp"     android:layout_marginright="-3dp"     android:id="@+id/cv">             <com.google.android.gms.maps.mapview                 android:name="com.google.android.gms.maps.mapfragment"                 android:id="@+id/maplite"                 android:layout_width="match_parent"                 android:layout_height="150dp"                 map:litemode="true"/>     </linearlayout> </android.support.v7.widget.cardview>

the code firebase adapter:

adapter = new firebaserecycleradapter<post, postviewholder>(post.class, r.layout.card_view_item, postviewholder.class, ref.child("message").child(currentgroupkey)) {     @override     public void onbindviewholder(postviewholder viewholder, int position) {         super.onbindviewholder(viewholder, position);         viewholder.setmaplocation(52.235474, 21.004057);     }      @override     protected void populateviewholder(final postviewholder postviewholder, final post post, int position) {         super.populateviewholder(postviewholder, post, position);     } };

and postviewholder:

    public class postviewholder extends recyclerview.viewholder {     public mapview mapview;      protected googlemap mgooglemap;     protected latlng mmaplocation;      public postviewholder(final view itemview) {         super(itemview);         mapview = (mapview) itemview.findviewbyid(r.id.maplite);          mapview.oncreate(null);         mapview.getmapasync(new onmapreadycallback() {             @override             public void onmapready(googlemap googlemap) {                  mgooglemap = googlemap;                 mapsinitializer.initialize(itemview.getcontext());                 googlemap.getuisettings().setmaptoolbarenabled(true);                 if (mmaplocation != null) {                     updatemapcontents();                 }             }         });     }      public void setmaplocation(double lat, double lon) {         mmaplocation = new latlng(lat, lon);          if (mgooglemap != null) {             updatemapcontents();         }     }      protected void updatemapcontents() {         mgooglemap.clear();         // update mapview feature data , camera position.         mgooglemap.addmarker(new markeroptions().position(mmaplocation));         cameraupdate cameraupdate = cameraupdatefactory.newlatlngzoom(mmaplocation, 10f);         mgooglemap.movecamera(cameraupdate);     } }

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