改变菜单的字体的属性

public static final int MI_FINISH = Menu.FIRST;
public static final int MI_ADDTASK = Menu.FIRST + 1;

 public boolean onCreateOptionsMenu(android.view.Menu menu) {
    menu.clear();
    setMenuBackground();
    menu.add(0, MI_FINISH, 0, "准备完成");
    menu.add(0, MI_ADDTASK, 0, "增加到标签");
    return true;
  }

  private void setMenuBackground() {
    // TODO Auto-generated method stub
    getLayoutInflater().setFactory(new Factory() {

        @Override
        public View onCreateView(final String name, final Context context,
                                 final AttributeSet attrs) {

  if(name.equalsIgnoreCase("com.android.internal.view.menu.IconMenuItemView")) {

                try { // Ask our inflater to create the view
                    final LayoutInflater f = getLayoutInflater();
                    final View[] view = new View[1];
                    try {
                        view[0] = f.createView(name, null, attrs);
                    } catch (InflateException e) {
                        chaneDeafultMenu(name, attrs, f, view);
                    }
                    // Kind of apply our own background
                    new Handler().post(new Runnable() {
                        @Override
                        public void run() {

                            ((TextView) view[0]).setTextColor(Color.WHITE);
                            ((TextView) view[0]).setTextSize(32F);
                            ((TextView) view[0])
                                    .setTypeface(Typeface.SANS_SERIF);
                        }
                    });
                    return view[0];
                } catch (InflateException e) {
                } catch (ClassNotFoundException e) {

                }
            }
            return null;
        }
    });
}

static void chaneDeafultMenu(final String name,
                             final android.util.AttributeSet attrs, final LayoutInflater f,
                             final View[] view) {
    // mConstructorArgs[0] is only non-null during a running call to
    // inflate()
    // so we make a call to inflate() and inside that call our dully
    // XmlPullParser get's called
    // and inside that it will work to call
    // "f.createView( name, null, attrs );"!
    try {
        f.inflate(new XmlPullParser() {
            @Override
            public int next() throws XmlPullParserException, IOException {
                try {
                    view[0] = f.createView(name, null, attrs);
                } catch (InflateException e) {
                } catch (ClassNotFoundException e) {
                }
                throw new XmlPullParserException("exit");
            }

            @Override
            public void defineEntityReplacementText(String arg0, String arg1)
                    throws XmlPullParserException {
                // TODO Auto-generated method stub

            }

            @Override
            public int getAttributeCount() {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public String getAttributeName(int arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getAttributeNamespace(int arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getAttributePrefix(int arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getAttributeType(int arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getAttributeValue(int arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getAttributeValue(String arg0, String arg1) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public int getColumnNumber() {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public int getDepth() {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public int getEventType() throws XmlPullParserException {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public boolean getFeature(String arg0) {
                // TODO Auto-generated method stub
                return false;
            }

            @Override
            public String getInputEncoding() {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public int getLineNumber() {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public String getName() {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getNamespace() {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getNamespace(String arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public int getNamespaceCount(int arg0)
                    throws XmlPullParserException {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public String getNamespacePrefix(int arg0)
                    throws XmlPullParserException {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getNamespaceUri(int arg0)
                    throws XmlPullParserException {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getPositionDescription() {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getPrefix() {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public Object getProperty(String arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public String getText() {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public char[] getTextCharacters(int[] arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public boolean isAttributeDefault(int arg0) {
                // TODO Auto-generated method stub
                return false;
            }

            @Override
            public boolean isEmptyElementTag()
                    throws XmlPullParserException {
                // TODO Auto-generated method stub
                return false;
            }

            @Override
            public boolean isWhitespace() throws XmlPullParserException {
                // TODO Auto-generated method stub
                return false;
            }

            @Override
            public int nextTag() throws XmlPullParserException, IOException {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public String nextText() throws XmlPullParserException,
                    IOException {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public int nextToken() throws XmlPullParserException,
                    IOException {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public void require(int arg0, String arg1, String arg2)
                    throws XmlPullParserException, IOException {
                // TODO Auto-generated method stub

            }

            @Override
            public void setFeature(String arg0, boolean arg1)
                    throws XmlPullParserException {
                // TODO Auto-generated method stub

            }

            @Override
            public void setInput(Reader arg0) throws XmlPullParserException {
                // TODO Auto-generated method stub

            }

            @Override
            public void setInput(InputStream arg0, String arg1)
                    throws XmlPullParserException {
                // TODO Auto-generated method stub

            }

            @Override
            public void setProperty(String arg0, Object arg1)
                    throws XmlPullParserException {
                // TODO Auto-generated method stub

            }
        }, null, false);
    } catch (InflateException e1) {
        // "exit" ignored
    }
}