1 /* 2 * Copyright (C) 2014 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 android.support.v4.media; 18 19 import android.media.VolumeProvider; 20 21 class VolumeProviderCompatApi21 { createVolumeProvider(int volumeControl, int maxVolume, int currentVolume, final Delegate delegate)22 public static Object createVolumeProvider(int volumeControl, int maxVolume, int currentVolume, 23 final Delegate delegate) { 24 return new VolumeProvider(volumeControl, maxVolume, currentVolume) { 25 @Override 26 public void onSetVolumeTo(int volume) { 27 delegate.onSetVolumeTo(volume); 28 } 29 30 @Override 31 public void onAdjustVolume(int direction) { 32 delegate.onAdjustVolume(direction); 33 } 34 }; 35 } 36 37 public static void setCurrentVolume(Object volumeProviderObj, int currentVolume) { 38 ((VolumeProvider) volumeProviderObj).setCurrentVolume(currentVolume); 39 } 40 41 public interface Delegate { 42 void onSetVolumeTo(int volume); 43 void onAdjustVolume(int delta); 44 } 45 } 46