Google Maps Android API v2 not show the map -

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i've problem show map using google map android api v2.

the app debug dont show error when call activity blank mapview no map inside.

my code is:

activity_map.xml:

<?xml version="1.0" encoding="utf-8"?>  <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="horizontal" >      <com.google.android.gms.maps.mapview         android:id="@+id/map_view"         android:layout_width="fill_parent"         android:layout_height="fill_parent"     />  </linearlayout>

mapvieweractivity

public class mapvieweractivity extends activity {      mapview mapview;     googlemap map;  /** called when activity first created. */ @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      setcontentview(r.layout.activity_map);      // gets mapview xml layout , creates     mapview = (mapview) findviewbyid(r.id.map_view);     mapview.oncreate(savedinstancestate);      // gets googlemap mapview , initialization stuff     map = mapview.getmap();     map.getuisettings().setmylocationbuttonenabled(false);     map.setmylocationenabled(true);      mapsinitializer.initialize(this);      // updates location , zoom of mapview     cameraupdate cameraupdate = cameraupdatefactory.newlatlngzoom(new latlng(43.1, -87.9), 10);     map.animatecamera(cameraupdate); }

any idea? tyvm read!

from google's documenation:

to use google maps android api v2, must register app project on google developers console , google api key can add app. type of api key need android key.

follow google's instructions here set maps api key

https://developers.google.com/maps/documentation/android/signup

in short:

  • make project in google developers console
  • generate key use maps api
  • add key android manifest

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