大致这样的效果

1、首页自定义一个ActionProvider类：ToolBarCustomActionProvider

2、menu的xml中配置actionProviderClass

3、code中配置

具体；
1、ToolBarCustomActionProvider类 继承的是v4下的class

package com.sunstar.cloudseeds.custom;

import android.content.Context;
import android.os.Handler;
import android.support.v4.view.ActionProvider;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;

import com.sunstar.cloudseeds.R;

/** * Created by louisgeek on 2016/8/16. */
public class ToolBarCustomActionProvider extends ActionProvider {
    Context mContext;
    TextView id_text_btn;
    boolean hasConfigedText=false;
    String mTitle;
    private static final String TAG = "CustomActionProvider";
    /** * Creates a new instance. * * @param context Context for accessing resources. */
    public ToolBarCustomActionProvider(Context context) {
        super(context);
        mContext=context;
    }

    @Override
    public View onCreateActionView() {
        LayoutInflater inflater = LayoutInflater.from(mContext);
        View view =inflater.inflate(R.layout.toolbar_right_custom_item_action_proider,null);
        Log.d(TAG,"onCreateActionView");
        id_text_btn= (TextView) view.findViewById(R.id.id_text_btn);
        if (id_text_btn!=null) {
            id_text_btn.setText(mTitle);
        }
        view.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                onWrapBtnViewClickLister.OnWrapBtnViewClick(v);
            }
        });
        return view;
    }
     /** * 调用的时候 会比onCreateActionView先执行 * @param title */
    public void setTitle(String title) {
        mTitle=title;
    }

    public  interface OnWrapBtnViewClickLister{
        void OnWrapBtnViewClick(View wrapBtnView);
    }


    public void setOnWrapBtnViewClickLister(OnWrapBtnViewClickLister onWrapBtnViewClickLister) {
        this.onWrapBtnViewClickLister = onWrapBtnViewClickLister;
    }

    OnWrapBtnViewClickLister onWrapBtnViewClickLister;
}

对应的xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" xmlns:tools="http://schemas.android.com/tools" android:paddingRight="12dp" >
    <TextView  android:id="@+id/id_text_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" tools:text="xx" android:textSize="15dp" android:layout_gravity="center" android:background="@drawable/selector_action_menu_bg" android:textColor="@color/white" android:gravity="center" />

</FrameLayout>

2、 menu_calculation.xml中配置actionProviderClass

<?xml version="1.0" encoding="utf-8"?>
    <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" >
    <!--app 来处理兼容性的v4下的 class-->
        <item  android:id="@+id/action_calculation" android:orderInCategory="100" app:actionProviderClass="com.sunstar.cloudseeds.custom.ToolBarCustomActionProvider" android:title="计算" app:showAsAction="always"/>
    </menu>

3、code中配置，把本来onOptionsItemSelected处理的按钮点击后事件移动到OnWrapBtnViewClickLister里

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_calculation,menu);
        //////
        MenuItem menuItem=menu.findItem(R.id.action_calculation);
        ToolBarCustomActionProvider toolBarCustomActionProvider = (ToolBarCustomActionProvider)MenuItemCompat.getActionProvider(menuItem);
        toolBarCustomActionProvider.setTitle(menuItem.getTitle()+"");
        toolBarCustomActionProvider.setOnWrapBtnViewClickLister(new ToolBarCustomActionProvider.OnWrapBtnViewClickLister() {
            @Override
            public void OnWrapBtnViewClick(View wrapBtnView) {
                //从onOptionsItemSelected移动到此处
                doCalculation();
            }
        });
        return super.onCreateOptionsMenu(menu);
    }