1.指南，例子，個人感覺

首先上官網指南連結http://developer.android.com/guide/topics/ui/actionbar.html

參考了官網上的例子http://developer.android.com/samples/ActionBarCompat-Basic/index.html

初看指南感覺ActionBar 的作用類似於web 開發中常用的include heder.html ,如cnblog 頁面總第一行 。

2.相容問題： sdk 11及11以上 可以直接使用，sdk 11以下則需要support-v7

PS:使用這兩種在配置檔案裡也要區別如下 ,注意下面#後面是使用sdk 11自帶的ActionBar 配置

<menu xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:support="http://schemas.android.com/apk/res-auto"

# xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    tools:context="com.example.actionbar.MainActivity" >

    <item

        android:id="@+id/action_settings"

        android:orderInCategory="100"

        android:title="@string/action_settings"

        support:showAsAction="never"

        #app:showAsAction="never"/>

    <item

        android:id="@+id/menu_refresh"

        android:icon="@drawable/ic_action_refresh"

        android:title="@string/menu_refresh"

        support:showAsAction="ifRoom"

        />

3.構造方法

有配置檔案，和程式程式碼裡構建兩種

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {


　　　  　配置檔案構建

        getMenuInflater().inflate(R.menu.main, menu);

        MenuItem locationItem = menu.add(0,R.id.menu_location,0,R.string.menu_location);

        程式構建

        locationItem.setIcon(R.drawable.ic_action_location);

        MenuItemCompat.setShowAsAction(locationItem, MenuItem.SHOW_AS_ACTION_IF_ROOM);

        return true;

    }

4.全程式碼

package com.example.actionbar;

import android.annotation.SuppressLint;

import android.annotation.TargetApi;

import android.os.Build;

import android.os.Bundle;

import android.support.v4.view.MenuItemCompat;

import android.support.v7.app.ActionBar;

import android.support.v7.app.ActionBarActivity;

import android.view.Menu;

import android.view.MenuItem;

//@SuppressLint("NewApi")

public class MainActivity extends ActionBarActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.sample_main);

   // android.app.ActionBar actionBar =  getActionBar();

    //actionBar.hide();

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.main, menu);

        MenuItem locationItem = menu.add(0,R.id.menu_location,0,R.string.menu_location);

        locationItem.setIcon(R.drawable.ic_action_location);

        MenuItemCompat.setShowAsAction(locationItem, MenuItem.SHOW_AS_ACTION_IF_ROOM);

        return true;

    }

    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

        // Handle action bar item clicks here. The action bar will

        // automatically handle clicks on the Home/Up button, so long

        // as you specify a parent activity in AndroidManifest.xml.

        switch (item.getItemId()) {

        case R.id.menu_refresh:

            // Here we might start a background refresh task

            return true;

        case R.id.menu_location:

            // Here we might call LocationManager.requestLocationUpdates()

            return true;

        case R.id.menu_settings:

            // Here we would open up our settings activity

            return true;

        case R.id.action_settings:

            // Here we would open up our settings activity

            return true;

    }

        return super.onOptionsItemSelected(item);

    }

}

5.後續.....