commit 4900bf9d82c4905fadc43d8e2dd9a7f896da2d81
author Todd Kennedy <toddke@google.com> Fri Jan 16 16:05:14 2015 -0800
committer Todd Kennedy <toddke@google.com> Tue Jan 20 10:51:49 2015 -0800
tree d6758555e1a054e6a6e46276919166bd44f9db14
parent df8e59abe5b0803cddee243e2c98d06afb66f5a9

Expose new binder call createStackOnDisplay()

Creates a new, empty ActivityStack on a display. Use the binder call to
launch an activity on said stack.

Bug: 19001243
Change-Id: I0f04e8f2703bcc706f58e75333869fb35f6b1ee9

services/core/java/com/android/server/am/ActivityStackSupervisor.java

diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 27f8312..ba2f449 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -1569,10 +1569,9 @@
             }
 
             // Need to create an app stack for this user.
-            int stackId = createStackOnDisplay(getNextStackId(), Display.DEFAULT_DISPLAY);
+            mFocusedStack = createStackOnDisplay(getNextStackId(), Display.DEFAULT_DISPLAY);
             if (DEBUG_FOCUS || DEBUG_STACK) Slog.d(TAG, "adjustStackFocus: New stack r=" + r +
-                    " stackId=" + stackId);
-            mFocusedStack = getStack(stackId);
+                    " stackId=" + mFocusedStack.mStackId);
             return mFocusedStack;
         }
         return mHomeStack;
@@ -2592,16 +2591,16 @@
         }
     }
 
-    private int createStackOnDisplay(int stackId, int displayId) {
+    ActivityStack createStackOnDisplay(int stackId, int displayId) {
         ActivityDisplay activityDisplay = mActivityDisplays.get(displayId);
         if (activityDisplay == null) {
-            return -1;
+            return null;
         }
 
         ActivityContainer activityContainer = new ActivityContainer(stackId);
         mActivityContainers.put(stackId, activityContainer);
         activityContainer.attachToDisplayLocked(activityDisplay);
-        return stackId;
+        return activityContainer.mStack;
     }
 
     int getNextStackId() {
@@ -2638,7 +2637,7 @@
             // We couldn't find a stack to restore the task to. Possible if are restoring recents
             // before an application stack is created...Go ahead and create one on the default
             // display.
-            stack = getStack(createStackOnDisplay(getNextStackId(), Display.DEFAULT_DISPLAY));
+            stack = createStackOnDisplay(getNextStackId(), Display.DEFAULT_DISPLAY);
             // Restore home stack to top.
             moveHomeStack(true);
             if (DEBUG_RECENTS)