Null out context for all split controllers

* Destroy context for AppPairsController and
SplitSelectDataHolder

Bug: 302551868
Change-Id: I5636ecf50d51ad383ac89a457697984bc8d907ca

quickstep/src/com/android/quickstep/util/AppPairsController.java

@@ -61,7 +61,7 @@ public class AppPairsController {
     private static final int BITMASK_SIZE = 16;
     private static final int BITMASK_FOR_SNAP_POSITION = (1 << BITMASK_SIZE) - 1;
 
-    private final Context mContext;
+    private Context mContext;
     private final SplitSelectStateController mSplitSelectStateController;
     private final StatsLogManager mStatsLogManager;
     public AppPairsController(Context context,
@@ -72,6 +72,10 @@ public class AppPairsController {
         mStatsLogManager = statsLogManager;
     }
 
+    void onDestroy() {
+        mContext = null;
+    }
+
     /**
      * Creates a new app pair ItemInfo and adds it to the workspace
      */

quickstep/src/com/android/quickstep/util/SplitSelectDataHolder.kt

@@ -54,7 +54,7 @@ import java.io.PrintWriter
  * state
  */
 class SplitSelectDataHolder(
-        val context: Context
+        var context: Context?
 ) {
     val TAG = SplitSelectDataHolder::class.simpleName
 
@@ -100,6 +100,10 @@ class SplitSelectDataHolder(
     private var initialShortcut: ShortcutInfo? = null
     private var secondShortcut: ShortcutInfo? = null
 
+    fun onDestroy() {
+        context = null
+    }
+
     /**
      * @param alreadyRunningTask if set to [android.app.ActivityTaskManager.INVALID_TASK_ID]
      * then @param intent will be used to launch the initial task
@@ -164,18 +168,15 @@ class SplitSelectDataHolder(
     }
 
     private fun getShortcutInfo(intent: Intent?, user: UserHandle?): ShortcutInfo? {
-        val intentPackage = intent?.getPackage()
-        if (intentPackage == null) {
-            return null
-        }
+        val intentPackage = intent?.getPackage() ?: return null
         val shortcutId = intent.getStringExtra(ShortcutKey.EXTRA_SHORTCUT_ID)
                 ?: return null
         try {
             val context: Context =
                 if (user != null) {
-                    context.createPackageContextAsUser(intentPackage, 0 /* flags */, user)
+                    context!!.createPackageContextAsUser(intentPackage, 0 /* flags */, user)
                 } else {
-                    context.createPackageContext(intentPackage, 0 /* *flags */)
+                    context!!.createPackageContext(intentPackage, 0 /* *flags */)
                 }
             return ShortcutInfo.Builder(context, shortcutId).build()
         } catch (e: PackageManager.NameNotFoundException) {

quickstep/src/com/android/quickstep/util/SplitSelectStateController.java

@@ -186,6 +186,8 @@ public class SplitSelectStateController {
     public void onDestroy() {
         mContext = null;
         mActivityBackCallback = null;
+        mAppPairsController.onDestroy();
+        mSplitSelectDataHolder.onDestroy();
     }
 
     /**