android-ActionBarCompat-Basic
/* * Copyright (C) 2013 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 com.example.android.actionbarcompat.basic; import android.os.Bundle; import android.support.v4.view.MenuItemCompat; import android.support.v7.app.ActionBarActivity; import android.view.Menu; import android.view.MenuItem; /** * This sample shows you how to use ActionBarCompat to create a basic Activity which displays * action items. It covers inflating items from a menu resource, as well as adding an item in code. * * This Activity extends from {@link ActionBarActivity}, which provides all of the function * necessary to display a compatible Action Bar on devices running Android v2.1+. */ public class MainActivity extends ActionBarActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.sample_main); } // 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) }
menu的main.xml
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