<application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/Theme.Sherlock.Light" >

        <activity

            android:name="com.example.actionbardemo.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

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

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

            </intent-filter>

        </activity>

 </application>

public class MainActivity extends SherlockActivity {

         @Override

         protected void onCreate(Bundle savedInstanceState) {

                  super.onCreate(savedInstanceState);

                  setContentView(R.layout.activity_main);

         }

}

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

    <item

        android:id="@+id/action_1"

        android:showAsAction="always"

       android:icon="@drawable/ic_launcher"

        android:title="action_1"/>

</menu>

@Override

public boolean onCreateOptionsMenu(Menu menu) {

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

         return super.onCreateOptionsMenu(menu);

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

         switch (item.getItemId()) {

         case R.id.action_1:

              Log.d("Test", "action 1 is clicked!");

              break;

         default:

         break;

         }

         return super.onOptionsItemSelected(item);

}

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

    <item

        android:id="@+id/action_1"

        android:icon="@drawable/ic_launcher"

        android:showAsAction="always"

        android:title="action_1"/>

    <item

        android:id="@+id/action_more"

        android:icon="@drawable/ic_launcher"

        android:showAsAction="always"

        android:title="action_more">

        <menu>

            <item

                android:id="@+id/action_2"

                android:showAsAction="always"

                android:title="action_2"/>

            <item

                android:id="@+id/action_3"

                android:showAsAction="always"

                android:title="action_3"/>

        </menu>

    </item>

</menu>

private void updateActionBar() {

         ActionBar actionbar = getSupportActionBar();//獲取actionbar對象

         actionbar.setTitle("自定義標(biāo)題");//修改actionbar標(biāo)題

         actionbar.setLogo(R.drawable.logo);//修改actionbar的logo

         actionbar.setDisplayHomeAsUpEnabled(true);//顯示返回按鍵

}