ClassNotFoundException: com.google.android.gms.maps.MapFragment with AndroidStudio -


i'm trying use google maps v2 on android app. i'm using android studio; followed steps indicated here: https://developers.google.com/maps/documentation/android/start#overview

in androidmanifest.xml i've:

 <uses-sdk     android:minsdkversion="12"     android:targetsdkversion="16" />  <uses-permission android:name="android.permission.internet" /> <uses-permission android:name="android.permission.access_network_state" /> <uses-permission android:name="android.permission.write_external_storage" /> <uses-permission android:name="com.google.android.providers.gsf.permission.read_gservices" /> <!-- following 2 permissions not required use      google maps android api v2, recommended. --> <uses-permission android:name="android.permission.access_coarse_location" /> <uses-permission android:name="android.permission.access_fine_location" />  <uses-feature     android:glesversion="0x00020000"     android:required="true" />

on build.gradle i've:

android { compilesdkversion 17 buildtoolsversion "17.0.0"  defaultconfig {     minsdkversion 12     targetsdkversion 16  }  }   dependencies {   compile 'com.android.support:support-v4:18.0.0'   compile 'com.google.android.gms:play-services:3.1.36' }

my first activity:

public class homeactivity extends activity {  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.home); }

}

my layout:

<?xml version="1.0" encoding="utf-8"?> <fragment xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/map" android:layout_width="match_parent" android:layout_height="match_parent" android:name="com.google.android.gms.maps.mapfragment" />

i can compile project when try deploy phone i've exception:

09-03 17:28:08.604    9787-9787/? e/androidruntime: fatal exception: main     java.lang.runtimeexception: unable start activity componentinfo{it.mobile/it.mobile.homeactivity}: android.view.inflateexception: binary xml file line #2: error inflating class fragment     @ android.app.activitythread.performlaunchactivity(activitythread.java:2184)     @ android.app.activitythread.handlelaunchactivity(activitythread.java:2211)     @ android.app.activitythread.access$600(activitythread.java:149)     @ android.app.activitythread$h.handlemessage(activitythread.java:1300)     @ android.os.handler.dispatchmessage(handler.java:99)     @ android.os.looper.loop(looper.java:153)     @ android.app.activitythread.main(activitythread.java:5086)     @ java.lang.reflect.method.invokenative(native method)     @ java.lang.reflect.method.invoke(method.java:511)     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:821)     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:584)     @ dalvik.system.nativestart.main(native method)     caused by: android.view.inflateexception: binary xml file line #2: error inflating class fragment     @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:704)     @ android.view.layoutinflater.inflate(layoutinflater.java:466)     @ android.view.layoutinflater.inflate(layoutinflater.java:396)     @ android.view.layoutinflater.inflate(layoutinflater.java:352)     @ com.android.internal.policy.impl.phonewindow.setcontentview(phonewindow.java:258)     @ android.app.activity.setcontentview(activity.java:1867)     @ it.mobile.homeactivity.oncreate(homeactivity.java:12)     @ android.app.activity.performcreate(activity.java:5020)     @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1080)     @ android.app.activitythread.performlaunchactivity(activitythread.java:2148)     ... 11 more     caused by: android.app.fragment$instantiationexception: unable instantiate fragment com.google.android.gms.maps.mapfragment: make sure class name exists, public, , has empty constructor public     @ android.app.fragment.instantiate(fragment.java:584)     @ android.app.fragment.instantiate(fragment.java:552)     @ android.app.activity.oncreateview(activity.java:4668)     @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:680)     ... 20 more     caused by: java.lang.classnotfoundexception: com.google.android.gms.maps.mapfragment     @ dalvik.system.basedexclassloader.findclass(basedexclassloader.java:61)     @ java.lang.classloader.loadclass(classloader.java:501)     @ java.lang.classloader.loadclass(classloader.java:461)     @ android.app.fragment.instantiate(fragment.java:574)     ... 23 more

in properties of project check export support library , google services library.

thanks

at end solved problem recreating new project in android studio. not sure problem.


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