Enable flagging shortcut with additional activity flags

Enable indicating to apply multiple_task flag while starting a shortcut
to split.

Bug: 265244780
Test: check the applied flags with activity start logs
Change-Id: Ia634baebeaf5f992fca40381b4a3c6bc7980017e
diff --git a/core/java/android/app/ActivityOptions.java b/core/java/android/app/ActivityOptions.java
index 0c08735..22a1a47 100644
--- a/core/java/android/app/ActivityOptions.java
+++ b/core/java/android/app/ActivityOptions.java
@@ -318,6 +318,13 @@
             "android:activity.applyActivityFlagsForBubbles";
 
     /**
+     * Indicates to apply {@link Intent#FLAG_ACTIVITY_MULTIPLE_TASK} to the launching shortcut.
+     * @hide
+     */
+    private static final String KEY_APPLY_MULTIPLE_TASK_FLAG_FOR_SHORTCUT =
+            "android:activity.applyMultipleTaskFlagForShortcut";
+
+    /**
      * For Activity transitions, the calling Activity's TransitionListener used to
      * notify the called Activity when the shared element and the exit transitions
      * complete.
@@ -449,6 +456,7 @@
     private boolean mLockTaskMode = false;
     private boolean mDisallowEnterPictureInPictureWhileLaunching;
     private boolean mApplyActivityFlagsForBubbles;
+    private boolean mApplyMultipleTaskFlagForShortcut;
     private boolean mTaskAlwaysOnTop;
     private boolean mTaskOverlay;
     private boolean mTaskOverlayCanResume;
@@ -1246,6 +1254,8 @@
                 KEY_DISALLOW_ENTER_PICTURE_IN_PICTURE_WHILE_LAUNCHING, false);
         mApplyActivityFlagsForBubbles = opts.getBoolean(
                 KEY_APPLY_ACTIVITY_FLAGS_FOR_BUBBLES, false);
+        mApplyMultipleTaskFlagForShortcut = opts.getBoolean(
+                KEY_APPLY_MULTIPLE_TASK_FLAG_FOR_SHORTCUT, false);
         if (opts.containsKey(KEY_ANIM_SPECS)) {
             Parcelable[] specs = opts.getParcelableArray(KEY_ANIM_SPECS);
             mAnimSpecs = new AppTransitionAnimationSpec[specs.length];
@@ -1815,6 +1825,16 @@
         return mApplyActivityFlagsForBubbles;
     }
 
+    /** @hide */
+    public void setApplyMultipleTaskFlagForShortcut(boolean apply) {
+        mApplyMultipleTaskFlagForShortcut = apply;
+    }
+
+    /** @hide */
+    public boolean isApplyMultipleTaskFlagForShortcut() {
+        return mApplyMultipleTaskFlagForShortcut;
+    }
+
     /**
      * Sets a launch cookie that can be used to track the activity and task that are launch as a
      * result of this option. If the launched activity is a trampoline that starts another activity
@@ -2143,6 +2163,10 @@
         if (mApplyActivityFlagsForBubbles) {
             b.putBoolean(KEY_APPLY_ACTIVITY_FLAGS_FOR_BUBBLES, mApplyActivityFlagsForBubbles);
         }
+        if (mApplyMultipleTaskFlagForShortcut) {
+            b.putBoolean(KEY_APPLY_MULTIPLE_TASK_FLAG_FOR_SHORTCUT,
+                    mApplyMultipleTaskFlagForShortcut);
+        }
         if (mAnimSpecs != null) {
             b.putParcelableArray(KEY_ANIM_SPECS, mAnimSpecs);
         }
diff --git a/services/core/java/com/android/server/pm/LauncherAppsService.java b/services/core/java/com/android/server/pm/LauncherAppsService.java
index 5e0fc3b..e37222f 100644
--- a/services/core/java/com/android/server/pm/LauncherAppsService.java
+++ b/services/core/java/com/android/server/pm/LauncherAppsService.java
@@ -1114,12 +1114,16 @@
 
             // Flag for bubble
             ActivityOptions options = ActivityOptions.fromBundle(startActivityOptions);
-            if (options != null && options.isApplyActivityFlagsForBubbles()) {
-                // Flag for bubble to make behaviour match documentLaunchMode=always.
-                intents[0].addFlags(FLAG_ACTIVITY_NEW_DOCUMENT);
-                intents[0].addFlags(FLAG_ACTIVITY_MULTIPLE_TASK);
+            if (options != null) {
+                if (options.isApplyActivityFlagsForBubbles()) {
+                    // Flag for bubble to make behaviour match documentLaunchMode=always.
+                    intents[0].addFlags(FLAG_ACTIVITY_NEW_DOCUMENT);
+                    intents[0].addFlags(FLAG_ACTIVITY_MULTIPLE_TASK);
+                }
+                if (options.isApplyMultipleTaskFlagForShortcut()) {
+                    intents[0].addFlags(FLAG_ACTIVITY_MULTIPLE_TASK);
+                }
             }
-
             intents[0].addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             intents[0].setSourceBounds(sourceBounds);