public class TestActivity extends Activity {
private static final String APPLICATION_ID = "Ditt app id! "; // ditt app id hittar du när du registerar en app på facebook.developer.balbalbl
private static final String ACESS_TOKEN = "access_token";
private static final String PREFS_NAME = "facebookprefs";
private Facebook facebook;

String mesg;


public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    mesg = "meddelande awesomeness";

     facebook = new Facebook(APPLICATION_ID);
        AsyncFacebookRunner mFacebookAsync = new AsyncFacebookRunner(facebook);
        String tokenId = getSharedPreferences(PREFS_NAME, ACESS_TOKEN);
        if(tokenId!=null){
            facebook.setAccessToken(tokenId);
            Log.i("Error", "finns redan ju ");

        }

        if (facebook.isSessionValid()) {
            Log.i("Error", "session is valid");
            postMessageOnWall(mesg);
        }
        else {
            facebook.authorize(this, new String[] {"publish_stream","offline_access"}, new Facebook.DialogListener() {

                @Override
                public void onComplete(Bundle values) {
                    setPreferences(PREFS_NAME, ACESS_TOKEN, facebook.getAccessToken());
                    postMessageOnWall(mesg);
                }

                @Override
                public void onFacebookError(FacebookError e) {
                    Log.i("Error", e.toString());
                }

                @Override
                public void onError(DialogError e) {
                    // TODO Auto-generated method stub
                    Log.i("Error", e.toString());
                }

                @Override
                public void onCancel() {
                    Log.i("Error", "onCancel");
                }
        });
     }

}
private void setPreferences(String preferenceName, String key, String value){
      SharedPreferences settings = getSharedPreferences(preferenceName, 0);
      SharedPreferences.Editor editor = settings.edit();
      editor.putString(key, value);
      editor.commit();
}
private String getSharedPreferences(String preferenceName, String key){
       // Restore preferences
       SharedPreferences settings = getSharedPreferences(preferenceName, 0);
       String value = settings.getString(key, null);
       return value;
}
public void postMessageOnWall(String msg) {
        Bundle parameters = new Bundle();

        // gör om till bitmaparray för att kunna skicka iväg till facebook..
       Bitmap bm =BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
       ByteArrayOutputStream baos = new ByteArrayOutputStream();
        bm.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        byte[] bitmapdata = baos.toByteArray();
        parameters.putString("message", "Mina nya glasögon");
        parameters.putByteArray("picture" , bitmapdata);
       // parameters.putString("message", msg);

        try {
            String response = facebook.request("me/photos", parameters,"POST");

            Toast.makeText(this, "Post succesfully", Toast.LENGTH_LONG).show();


            Log.i("Error", response);
        } catch (IOException e) {
            Log.e("Error", e.toString());
        }
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    facebook.authorizeCallback(requestCode, resultCode, data);
}
}