Android 2.3 and google maps API v2

Question

Today I tried to use google maps api v2 for Android 2.3.3 My steps:

• got SHA1 code from debug.keystore
• create a new project in google apis console
• register a new id
• enabled google maps android api v2
• create an android key using as input SHA1;it.mappe (it.mappe is my package)
• get API key

• update AndroidManifest file:

  <permission android:name="it.mappe.permission.MAPS_RECEIVE" android:protectionLevel="signature" />
  
  <uses-permission android:name="it.mappe.permission.MAPS_RECEIVE" />
  <uses-sdk android:minSdkVersion="10" android:targetSdkVersion="16" />
  
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
  <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
  
  <uses-feature android:glEsVersion="0x00020000" android:required="true"` />
  
  <application     android:allowBackup="true"    android:icon="@drawable/ic_launcher"  android:label="@string/app_name"  android:theme="@style/AppTheme" >
      <meta-data
          android:name="com.google.android.maps.v2.API_KEY"
          android:value="MY_KEY" />
  
          <activity
              android:name="it.mappe.MainActivity"
              android:label="@string/app_name" >
          <intent-filter>
              <action android:name="android.intent.action.MAIN" />
  
              <category android:name="android.intent.category.LAUNCHER" />
          </intent-filter>
      </activity>
  </application>
  

• my main activity

  public class MainActivity extends Activity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
  }   
  

• my activity_main:

  <fragment xmlns:android="http://schemas.android.com/apk/res/android"
      android:id="@+id/map"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      class="com.google.android.gms.maps.SupportMapFragment"/>
  

• copy directory ANDROID_SDK_DIR/extras/google/google_play_services/libproject/google-play-services_lib to root of your project

• add /extras/android/compatibility/v4/android-support-v4.jar as external jar

• add next line to the YOUR_PROJECT/project.properties android.library.reference.1=google-play-services_lib

When i run it on my samsung galaxy S (with google play services apk), it crashs and logcat shows this errors

E/AndroidRuntime(6435): FATAL EXCEPTION: main java.lang.RuntimeException: Unable to start activity ComponentInfo{it.mappe/it.mappe.MainActivity}: 

android.view.InflateException: Binary XML file line #2: Error inflating class fragment
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:123)
    at android.app.ActivityThread.main(ActivityThread.java:3687)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:507)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
    at dalvik.system.NativeStart.main(Native Method)
 Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:386)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:209)
    at android.app.Activity.setContentView(Activity.java:1657)
    at it.mappe.MainActivity.onCreate(MainActivity.java:12)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
    ... 11 more
 Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/it.mappe-2.apk]
    at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
    at android.view.LayoutInflater.createView(LayoutInflater.java:471)
    at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
    at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
    ... 19 more

some suggestions?

EDIT

here my main.xml:

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.SupportMapFragment"/>

Answer 1

<fragment> should be in all lowercase.

Also, you are using Activity (not FragmentActivity) with SupportMapFragment, and I doubt that combination will work.

Answer 2

Check if the target Google SDK version in the project.properties and the support lib(Android.jar) versions are the same.