DO NOT MERGE Have volume UI dismiss on home button press. am: 25400fdc

import android.car.Car;

import android.car.Car.CarServiceLifecycleListener;

import android.car.media.CarAudioManager;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.IntentFilter;

import android.content.res.TypedArray;

import android.content.res.XmlResourceParser;

import android.graphics.Color;

import android.os.Handler;

import android.os.Looper;

import android.os.Message;

import android.os.UserHandle;

import android.util.AttributeSet;

import android.util.Log;

import android.util.SparseArray;

        mCarAudioManager.registerCarVolumeCallback(mVolumeChangeCallback);

    };

    private final BroadcastReceiver mHomeButtonPressedBroadcastReceiver = new BroadcastReceiver() {

        @Override

        public void onReceive(Context context, Intent intent) {

            if (!intent.getAction().equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {

                return;

            }

            dismiss(Events.DISMISS_REASON_VOLUME_CONTROLLER);

        }

    };

    public CarVolumeDialogImpl(Context context) {

        mContext = context;

        mKeyguard = (KeyguardManager) mContext.getSystemService(Context.KEYGUARD_SERVICE);

    public void init(int windowType, Callback callback) {

        initDialog();

        mContext.registerReceiverAsUser(mHomeButtonPressedBroadcastReceiver, UserHandle.CURRENT,

                new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS), /* broadcastPermission= */

                null, /* scheduler= */ null);

        ((CarSystemUIFactory) SystemUIFactory.getInstance()).getCarServiceProvider(mContext)

                .addListener(mCarServiceLifecycleListener);

    }

    public void destroy() {

        mHandler.removeCallbacksAndMessages(/* token= */ null);

        mContext.unregisterReceiver(mHomeButtonPressedBroadcastReceiver);

        cleanupAudioManager();

    }