Mega Code Archive
Basics of the Action Bar and how it interoperates with the standard options menu
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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package app.test;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
import android.widget.Toast;
/**
* This demonstrates the basics of the Action Bar and how it interoperates with the
* standard options menu. This demo is for informative purposes only; see ActionBarUsage for
* an example of using the Action Bar in a more idiomatic manner.
*/
public class Test extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// The Action Bar is a window feature. The feature must be requested
// before setting a content view. Normally this is set automatically
// by your Activity's theme in your manifest. The provided system
// theme Theme.WithActionBar enables this for you. Use it as you would
// use Theme.NoTitleBar. You can add an Action Bar to your own themes
// by adding the element <item name="android:windowActionBar">true</item>
// to your style definition.
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Menu items default to never show in the action bar. On most devices this means
// they will show in the standard options menu panel when the menu button is pressed.
// On xlarge-screen devices a "More" button will appear in the far right of the
// Action Bar that will display remaining items in a cascading menu.
menu.add("Normal item");
MenuItem actionItem = menu.add("Action Button");
// Items that show as actions should favor the "if room" setting, which will
// prevent too many buttons from crowding the bar. Extra items will show in the
// overflow area.
actionItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
// Items that show as actions are strongly encouraged to use an icon.
// These icons are shown without a text description, and therefore should
// be sufficiently descriptive on their own.
actionItem.setIcon(android.R.drawable.ic_menu_share);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Toast.makeText(this, "Selected Item: " + item.getTitle(), Toast.LENGTH_SHORT).show();
return true;
}
}
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