1 /* 2 * Copyright (C) 2012 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 17 package com.example.android.support.appnavigation.app; 18 19 import android.app.Activity; 20 import android.os.Build; 21 22 /** 23 * Very limited shim for enabling the action bar's up button on devices that support it. 24 */ 25 public class ActionBarCompat { 26 /** 27 * This class will only ever be loaded if the version check succeeds, 28 * keeping the verifier from rejecting the use of framework classes that 29 * don't exist on older platform versions. 30 */ 31 static class ActionBarCompatImpl { 32 static void setDisplayHomeAsUpEnabled(Activity activity, boolean enable) { 33 activity.getActionBar().setDisplayHomeAsUpEnabled(enable); 34 } 35 } 36 37 public static void setDisplayHomeAsUpEnabled(Activity activity, boolean enable) { 38 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { 39 ActionBarCompatImpl.setDisplayHomeAsUpEnabled(activity, enable); 40 } 41 } 42 } 43
