Controls Activity - Always close when keyguard becomes active

The ControlsActivity can be launched over lockscreen when the user
permits, or only while unlocked. However, leaving the occluded
activity up while the screen is off can lead to potential issues, as
well as just being against user expectations for the activity.

Fixes: 197391802
Test: manual, launch device controls and power the screen off

Change-Id: I50a4d17a24c0d73f320f2637488f7ae502dddae9

packages/SystemUI/src/com/android/systemui/controls/ui/ControlsActivity.kt

@@ -16,6 +16,10 @@
 
 package com.android.systemui.controls.ui
 
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
 import android.os.Bundle
 import android.view.View
 import android.view.ViewGroup
@@ -23,18 +27,25 @@ import android.view.WindowInsets
 import android.view.WindowInsets.Type
 
 import com.android.systemui.R
+import com.android.systemui.broadcast.BroadcastDispatcher
 import com.android.systemui.controls.management.ControlsAnimations
 import com.android.systemui.util.LifecycleActivity
 import javax.inject.Inject
 
 /**
- * Displays Device Controls inside an activity
+ * Displays Device Controls inside an activity. This activity is available to be displayed over the
+ * lockscreen if the user has allowed it via
+ * [android.provider.Settings.Secure.LOCKSCREEN_SHOW_CONTROLS]. This activity will be
+ * destroyed on SCREEN_OFF events, due to issues with occluded activities over lockscreen as well as
+ * user expectations for the activity to not continue running.
  */
 class ControlsActivity @Inject constructor(
-    private val uiController: ControlsUiController
+    private val uiController: ControlsUiController,
+    private val broadcastDispatcher: BroadcastDispatcher
 ) : LifecycleActivity() {
 
     private lateinit var parent: ViewGroup
+    private lateinit var broadcastReceiver: BroadcastReceiver
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -62,6 +73,8 @@ class ControlsActivity @Inject constructor(
                 WindowInsets.CONSUMED
             }
         }
+
+        initBroadcastReceiver()
     }
 
     override fun onResume() {
@@ -83,4 +96,25 @@ class ControlsActivity @Inject constructor(
 
         uiController.hide()
     }
+
+    override fun onDestroy() {
+        super.onDestroy()
+
+        broadcastDispatcher.unregisterReceiver(broadcastReceiver)
+    }
+
+    private fun initBroadcastReceiver() {
+        broadcastReceiver = object : BroadcastReceiver() {
+            override fun onReceive(context: Context, intent: Intent) {
+                val action = intent.getAction()
+                if (Intent.ACTION_SCREEN_OFF.equals(action)) {
+                    finish()
+                }
+            }
+        }
+
+        val filter = IntentFilter()
+        filter.addAction(Intent.ACTION_SCREEN_OFF)
+        broadcastDispatcher.registerReceiver(broadcastReceiver, filter)
+    }
 }