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 17 package com.example.android.musicplayer; 18 19 /** 20 * Represents something that can react to audio focus events. We implement this instead of just 21 * using AudioManager.OnAudioFocusChangeListener because that interface is only available in SDK 22 * level 8 and above, and we want our application to work on previous SDKs. 23 */ 24 public interface MusicFocusable { 25 /** Signals that audio focus was gained. */ 26 public void onGainedAudioFocus(); 27 28 /** 29 * Signals that audio focus was lost. 30 * 31 * @param canDuck If true, audio can continue in "ducked" mode (low volume). Otherwise, all 32 * audio must stop. 33 */ 34 public void onLostAudioFocus(boolean canDuck); 35 } 36
