Multi-window assist callback
Introducing a new callback in VoiceInteractionSession to
provide assist data for additional activities in the
foreground in a multiwindow setup.
PIP, docked windows and free-form windows (top-most)
will be queried for assist data and passed through the
new API to the Voice Interaction service.
Bug: 27718385
Change-Id: Ib4427c304611b75c2078dcb54f1f7e47ae7d9cfa
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index d34e8fc..7e4ffae 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -98,6 +98,7 @@
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
+import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.Set;
@@ -4270,4 +4271,31 @@
}
return result;
}
+
+ /**
+ * @return a list of activities which are the top ones in each visible stack. The first
+ * entry will be the focused activity.
+ */
+ public List<IBinder> getTopVisibleActivities() {
+ final ActivityDisplay display = mActivityDisplays.get(Display.DEFAULT_DISPLAY);
+ if (display == null) {
+ return Collections.EMPTY_LIST;
+ }
+ ArrayList<IBinder> topActivityTokens = new ArrayList<>();
+ final ArrayList<ActivityStack> stacks = display.mStacks;
+ for (int i = stacks.size() - 1; i >= 0; i--) {
+ ActivityStack stack = stacks.get(i);
+ if (stack.getStackVisibilityLocked(null) == ActivityStack.STACK_VISIBLE) {
+ ActivityRecord top = stack.topActivity();
+ if (top != null) {
+ if (stack == mFocusedStack) {
+ topActivityTokens.add(0, top.appToken);
+ } else {
+ topActivityTokens.add(top.appToken);
+ }
+ }
+ }
+ }
+ return topActivityTokens;
+ }
}