1 /* 2 * Copyright (C) 2023 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.android.systemui.car.systembar; 18 19 import static android.media.AudioAttributes.USAGE_MEDIA; 20 import static android.media.AudioManager.FLAG_SHOW_UI; 21 22 import android.car.Car; 23 import android.car.media.CarAudioManager; 24 import android.content.Context; 25 import android.util.AttributeSet; 26 27 public class VolumeButton extends CarSystemBarButton { VolumeButton(Context context, AttributeSet attrs)28 public VolumeButton(Context context, AttributeSet attrs) { 29 super(context, attrs); 30 Car car = Car.createCar(context); 31 CarAudioManager carAudioManager = car.getCarManager(CarAudioManager.class); 32 33 setOnClickListener(v -> { 34 if (carAudioManager != null) { 35 // todo(b/304797002): Use highest priority active group instead of USAGE_MEDIA 36 int groupId = carAudioManager.getVolumeGroupIdForUsage(USAGE_MEDIA); 37 carAudioManager.setGroupVolume(groupId, carAudioManager.getGroupVolume(groupId), 38 FLAG_SHOW_UI); 39 } 40 }); 41 } 42 } 43