Merge "Finish noHistory activities immediately after resumed activity shown." into oc-dev am: c589f1b1f7
am: 2f8f884ecf

Change-Id: I69b65f1f48069891217a9b164eeeaea495a957d8
diff --git a/services/core/java/com/android/server/am/ActivityRecord.java b/services/core/java/com/android/server/am/ActivityRecord.java
index 18c8b32..ba2c0cd 100644
--- a/services/core/java/com/android/server/am/ActivityRecord.java
+++ b/services/core/java/com/android/server/am/ActivityRecord.java
@@ -40,6 +40,7 @@
 import static android.content.Intent.CATEGORY_HOME;
 import static android.content.Intent.CATEGORY_LAUNCHER;
 import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;
+import static android.content.Intent.FLAG_ACTIVITY_NO_HISTORY;
 import static android.content.pm.ActivityInfo.CONFIG_ORIENTATION;
 import static android.content.pm.ActivityInfo.CONFIG_SCREEN_LAYOUT;
 import static android.content.pm.ActivityInfo.CONFIG_SCREEN_SIZE;
@@ -61,6 +62,7 @@
 import static android.content.pm.ActivityInfo.RESIZE_MODE_RESIZEABLE;
 import static android.content.pm.ActivityInfo.RESIZE_MODE_RESIZEABLE_VIA_SDK_VERSION;
 import static android.content.pm.ActivityInfo.RESIZE_MODE_UNRESIZEABLE;
+import static android.content.pm.ActivityInfo.FLAG_NO_HISTORY;
 import static android.content.pm.ActivityInfo.isFixedOrientationLandscape;
 import static android.content.pm.ActivityInfo.isFixedOrientationPortrait;
 import static android.content.res.Configuration.EMPTY;
@@ -128,7 +130,6 @@
 import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
 import android.graphics.Bitmap;
-import android.graphics.Point;
 import android.graphics.Rect;
 import android.os.Bundle;
 import android.os.Debug;
@@ -1951,13 +1952,9 @@
             if (!nowVisible) {
                 nowVisible = true;
                 lastVisibleTime = SystemClock.uptimeMillis();
-                if (!idle) {
-                    // Instead of doing the full stop routine here, let's just hide any activities
-                    // we now can, and let them stop when the normal idle happens.
-                    mStackSupervisor.processStoppingActivitiesLocked(null /* idleActivity */,
-                            false /* remove */, true /* processPausingActivities */);
-                } else {
-                    // If this activity was already idle, then we now need to make sure we perform
+                if (idle || mStackSupervisor.isStoppingNoHistoryActivity()) {
+                    // If this activity was already idle or there is an activity that must be
+                    // stopped immediately after visible, then we now need to make sure we perform
                     // the full stop of any activities that are waiting to do so. This is because
                     // we won't do that while they are still waiting for this one to become visible.
                     final int size = mStackSupervisor.mActivitiesWaitingForVisibleActivity.size();
@@ -1970,6 +1967,11 @@
                         mStackSupervisor.mActivitiesWaitingForVisibleActivity.clear();
                         mStackSupervisor.scheduleIdleLocked();
                     }
+                } else {
+                    // Instead of doing the full stop routine here, let's just hide any activities
+                    // we now can, and let them stop when the normal idle happens.
+                    mStackSupervisor.processStoppingActivitiesLocked(null /* idleActivity */,
+                            false /* remove */, true /* processPausingActivities */);
                 }
                 service.scheduleAppGcsLocked();
             }
@@ -2662,6 +2664,15 @@
         return true;
     }
 
+    /**
+     * Returns {@code true} if the associated activity has the no history flag set on it.
+     * {@code false} otherwise.
+     */
+    boolean isNoHistory() {
+        return (intent.getFlags() & FLAG_ACTIVITY_NO_HISTORY) != 0
+                || (info.flags & FLAG_NO_HISTORY) != 0;
+    }
+
     void saveToXml(XmlSerializer out) throws IOException, XmlPullParserException {
         out.attribute(null, ATTR_ID, String.valueOf(createTime));
         out.attribute(null, ATTR_LAUNCHEDFROMUID, String.valueOf(launchedFromUid));
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 23b0607..f49d482 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -3500,6 +3500,23 @@
         return mService.mUserController.isCurrentProfileLocked(userId);
     }
 
+    /**
+     * Returns whether a stopping activity is present that should be stopped after visible, rather
+     * than idle.
+     * @return {@code true} if such activity is present. {@code false} otherwise.
+     */
+    boolean isStoppingNoHistoryActivity() {
+        // Activities that are marked as nohistory should be stopped immediately after the resumed
+        // activity has become visible.
+        for (ActivityRecord record : mStoppingActivities) {
+            if (record.isNoHistory()) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     final ArrayList<ActivityRecord> processStoppingActivitiesLocked(ActivityRecord idleActivity,
             boolean remove, boolean processPausingActivities) {
         ArrayList<ActivityRecord> stops = null;