Android的ActionBar菜单使用

使用ActionBar设置菜单例子

/res/menu/activity_main.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android" >
	<item
        android:id="@+id/menu_settings"
        android:orderInCategory="100"
        android:showAsAction="always"
        android:title="@string/menu_settings" />
    <item
        android:id="@+id/menu_settingss"
        android:orderInCategory="100"
        android:showAsAction="always"
        android:icon="@android:drawable/ic_menu_sort_by_size">
        <menu>
            <item android:id="@+id/action_sort_size"
                  android:icon="@android:drawable/ic_menu_sort_by_size"
                  android:title="action_bar_sort_size"/>
            <item android:id="@+id/action_sort_alpha"
                  android:icon="@android:drawable/ic_menu_sort_alphabetically"
                  android:title="action_bar_sort_alpha"/>
        </menu>
   	</item>
	
</menu>

MainActivity.java

package com.example.actionbartab;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		MenuInflater inflater = getMenuInflater();  
        inflater.inflate(R.menu.activity_main, menu);
		return true;
	}

}