ActionBarCompat

import android.support.v7.app.ActionBarActivity;
继承基类ActionBarActivity -> FragmentActivity -> Activity

 

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

    <!--
        Here we create an item, setting support:showAsAction to display the item as an action if
        there's room on the compatible Action Bar.
    -->
    <item
        android:id="@+id/menu_refresh"
        android:icon="@drawable/ic_action_refresh"
        android:title="@string/menu_refresh"
        support:showAsAction="ifRoom"/>

    <!-- Location item is added in onCreateOptionsMenu() -->

    <!--
        Here we set the settings item to always be in the overflow menu, by setting
        support:showAsAction to never, so it is never displayed as an action item on the compatible
        Action Bar.
    -->
    <item
        android:id="@+id/menu_settings"
        android:icon="@drawable/ic_action_settings"
        android:title="@string/menu_settings"
        support:showAsAction="never"/>

</menu>

 

    // BEGIN_INCLUDE(create_menu)
    /**
     * Use this method to instantiate your menu, and add your items to it. You
     * should return true if you have added items to it and want the menu to be displayed.
     */
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate our menu from the resources by using the menu inflater.
        getMenuInflater().inflate(R.menu.main, menu);

        // It is also possible add items here. Use a generated id from
        // resources (ids.xml) to ensure that all menu ids are distinct.
        MenuItem locationItem = menu.add(0, R.id.menu_location, 0, R.string.menu_location);
        locationItem.setIcon(R.drawable.ic_action_location);

        // Need to use MenuItemCompat methods to call any action item related methods
        MenuItemCompat.setShowAsAction(locationItem, MenuItem.SHOW_AS_ACTION_IF_ROOM);

        return true;
    }
    // END_INCLUDE(create_menu)

    // BEGIN_INCLUDE(menu_item_selected)
    /**
     * This method is called when one of the menu items to selected. These items
     * can be on the Action Bar, the overflow menu, or the standard options menu. You
     * should return true if you handle the selection.
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        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;
        }

        return super.onOptionsItemSelected(item);
    }
    // END_INCLUDE(menu_item_selected)