1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.support.v4.view; 18 19import android.view.MenuItem; 20 21/** 22 * Helper for accessing features in {@link android.view.Menu} 23 * introduced after API level 4 in a backwards compatible fashion. 24 */ 25public class MenuCompat { 26 27 /** 28 * Interface for the full API. 29 */ 30 interface MenuVersionImpl { 31 public boolean setShowAsAction(MenuItem item, int actionEnum); 32 } 33 34 /** 35 * Interface implementation that doesn't use anything about v4 APIs. 36 */ 37 static class BaseMenuVersionImpl implements MenuVersionImpl { 38 @Override 39 public boolean setShowAsAction(MenuItem item, int actionEnum) { 40 return false; 41 } 42 } 43 44 /** 45 * Interface implementation for devices with at least v11 APIs. 46 */ 47 static class HoneycombMenuVersionImpl implements MenuVersionImpl { 48 @Override 49 public boolean setShowAsAction(MenuItem item, int actionEnum) { 50 MenuItemCompatHoneycomb.setShowAsAction(item, actionEnum); 51 return true; 52 } 53 } 54 55 /** 56 * Select the correct implementation to use for the current platform. 57 */ 58 static final MenuVersionImpl IMPL; 59 static { 60 if (android.os.Build.VERSION.SDK_INT >= 11) { 61 IMPL = new HoneycombMenuVersionImpl(); 62 } else { 63 IMPL = new BaseMenuVersionImpl(); 64 } 65 } 66 67 // ------------------------------------------------------------------- 68 69 /** 70 * Call {@link MenuItem#setShowAsAction(int) MenuItem.setShowAsAction()}. 71 * If running on a pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} device, 72 * does nothing and returns false. Otherwise returns true. 73 * 74 * @deprecated Use {@link MenuItemCompat#setShowAsAction(MenuItem, int) 75 * MenuItemCompat.setShowAsAction(MenuItem, int)} 76 77 */ 78 public static boolean setShowAsAction(MenuItem item, int actionEnum) { 79 return IMPL.setShowAsAction(item, actionEnum); 80 } 81} 82