I know this questions has already been asked hundreds of times, and it feels like I've been through them all without finding an answer.

I've been follwing an answer on how to add a marker to googlemaps.[How to add overlay in google maps API v2 | Android |](https://stackoverflow.com/questions/14114131/how-to-add-overlay-in-google-maps-api-v2-android)

I get no errors but when i run the app i get "program has stopped" and I get these errors in logcat:

```
01-08 13:22:20.658: W/dalvikvm(9338): threadid=1: thread exiting with uncaught exception (group=0x40c701f8)
01-08 13:22:20.663: E/AndroidRuntime(9338): FATAL EXCEPTION: main
01-08 13:22:20.663: E/AndroidRuntime(9338): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.googlemaps/com.googlemaps.MainActivity}: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1967)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.ActivityThread.access$600(ActivityThread.java:127)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.os.Handler.dispatchMessage(Handler.java:99)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.os.Looper.loop(Looper.java:137)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.ActivityThread.main(ActivityThread.java:4511)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at java.lang.reflect.Method.invokeNative(Native Method)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at java.lang.reflect.Method.invoke(Method.java:511)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:980)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:747)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at dalvik.system.NativeStart.main(Native Method)
01-08 13:22:20.663: E/AndroidRuntime(9338): Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class fragment
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:272)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.Activity.setContentView(Activity.java:1835)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at com.googlemaps.MainActivity.onCreate(MainActivity.java:19)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.Activity.performCreate(Activity.java:4470)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1052)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1931)
01-08 13:22:20.663: E/AndroidRuntime(9338):     ... 11 more
01-08 13:22:20.663: E/AndroidRuntime(9338): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.supportMapFragment: make sure class name exists, is public, and has an empty constructor that is public
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.support.v4.app.Fragment.instantiate(Fragment.java:401)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669)
01-08 13:22:20.663: E/AndroidRuntime(9338):     ... 21 more
01-08 13:22:20.663: E/AndroidRuntime(9338): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.supportMapFragment
01-08 13:22:20.663: E/AndroidRuntime(9338):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
01-08 13:22:20.663: E/AndroidRuntime(9338):     at android.support.v4.app.Fragment.instantiate(Fragment.java:391)
01-08 13:22:20.663: E/AndroidRuntime(9338):     ... 24 more

```

Here's my main java:

```
package com.googlemaps;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;

public class MapActivity extends FragmentActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main); 
    LatLng sala = new LatLng(59.918434,16.618195);

    GoogleMap mMap;
    mMap = ((SupportMapFragment)(getSupportFragmentManager().findFragmentById(android.R.id.content))).getMap();
    mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
    mMap.addMarker(new MarkerOptions()
            .position(sala)
            .title("Här ligger sala")
            .snippet("Detta är sala")
            .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
    mMap.getUiSettings().setCompassEnabled(true);
    mMap.getUiSettings().setZoomControlsEnabled(true);
    mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(sala,10));

}

```

And here's my xml:

```
<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout 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"
    tools:context=".MainActivity" >

<fragment 
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.supportMapFragment"

    />
</RelativeLayout>

```

and also my manifest:

```
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.googlemaps"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="17" />
    <permission
        android:name="com.googlemaps.permission.MAPS_RECEIVE"
        android:protectionLevel="signature"/>

    <uses-permission android:name="com.googlemaps.permission.MAPS_RECEIVE" />
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission     
    android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <uses-library android:required="true"
            android:name="com.google.android.maps" />
        <activity
            android:name="com.go8oglemaps.MapActivity"
            android:label="@string/app_name" 
            android:screenOrientation="portrait">

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- adds google API key to manifest -->
        <meta-data 
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="AIzaSyDSVPzsvOratkVZoMEKa0sF_GLOtcFI7yg"
            />
    </application>

    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />
</manifest>

```