DO NOT MERGE Have volume UI dismiss on home button press. am: 25400fdcb9

Change-Id: I41f3e4167c097ee1df5ef5fd4d07932967995b33

packages/CarSystemUI/src/com/android/systemui/volume/CarVolumeDialogImpl.java

@@ -26,8 +26,11 @@ import android.app.KeyguardManager;
 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;
@@ -39,6 +42,7 @@ import android.os.Debug;
 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;
@@ -175,6 +179,17 @@ public class CarVolumeDialogImpl implements VolumeDialog {
         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);
@@ -204,6 +219,10 @@ public class CarVolumeDialogImpl implements VolumeDialog {
     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);
     }
@@ -212,6 +231,8 @@ public class CarVolumeDialogImpl implements VolumeDialog {
     public void destroy() {
         mHandler.removeCallbacksAndMessages(/* token= */ null);
 
+        mContext.unregisterReceiver(mHomeButtonPressedBroadcastReceiver);
+
         cleanupAudioManager();
     }