Immersive activity API.

An Activity can declare itself to be "immersive" either by
setting android:immersive="true" in AndroidManifest or by
calling setImmersive(true).

Immersive activities "should" not be interrupted, for
example by Notifications with an associated
fullScreenIntent. (In the future we may even prevent any
non-system application from successfully calling
startActivity() if the foreground activity is immersive.)
Notifications with FLAG_HIGH_PRIORITY set will be shown to
the user in some less-obtrusive way if the frontmost
activity is immersive.

Change-Id: I8d0c25cc4e22371c27cbf2bb6372d2c95d57b2d7

2 files changed, 34 insertions, 0 deletions

diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index 4d18191..d59ecdd 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -8725,6 +8725,35 @@ public final class ActivityManagerService extends ActivityManagerNative implemen
         }
     }
 
+    public void setImmersive(IBinder token, boolean immersive) {
+        synchronized(this) {
+            int index = (token != null) ? indexOfTokenLocked(token) : -1;
+            if (index < 0) {
+                throw new IllegalArgumentException();
+            }
+            HistoryRecord r = (HistoryRecord)mHistory.get(index);
+            r.immersive = immersive;
+        }
+    }
+
+    public boolean isImmersive(IBinder token) {
+        synchronized (this) {
+            int index = (token != null) ? indexOfTokenLocked(token) : -1;
+            if (index < 0) {
+                throw new IllegalArgumentException();
+            }
+            HistoryRecord r = (HistoryRecord)mHistory.get(index);
+            return r.immersive;
+        }
+    }
+
+    public boolean isTopActivityImmersive() {
+        synchronized (this) {
+            HistoryRecord r = topRunningActivityLocked(null);
+            return (r != null) ? r.immersive : false;
+        }
+    }
+
     public final void enterSafeMode() {
         synchronized(this) {
             // It only makes sense to do this before the system is ready
diff --git a/services/java/com/android/server/am/HistoryRecord.java b/services/java/com/android/server/am/HistoryRecord.java
index dca7a99..fb5c8aa 100644
--- a/services/java/com/android/server/am/HistoryRecord.java
+++ b/services/java/com/android/server/am/HistoryRecord.java
@@ -101,6 +101,7 @@ class HistoryRecord extends IApplicationToken.Stub {
     boolean idle;           // has the activity gone idle?
     boolean hasBeenLaunched;// has this activity ever been launched?
     boolean frozenBeforeDestroy;// has been frozen but not yet destroyed.
+    boolean immersive;      // immersive mode (don't interrupt if possible)
 
     String stringName;      // for caching of toString().
     
@@ -153,6 +154,7 @@ class HistoryRecord extends IApplicationToken.Stub {
         pw.print(prefix); pw.print("keysPaused="); pw.print(keysPaused);
                 pw.print(" inHistory="); pw.print(inHistory);
                 pw.print(" persistent="); pw.print(persistent);
+                pw.print(" immersive="); pw.print(immersive);
                 pw.print(" launchMode="); pw.println(launchMode);
         pw.print(prefix); pw.print("fullscreen="); pw.print(fullscreen);
                 pw.print(" visible="); pw.print(visible);
@@ -278,6 +280,8 @@ class HistoryRecord extends IApplicationToken.Stub {
             } else {
                 isHomeActivity = false;
             }
+
+            immersive = (aInfo.flags & ActivityInfo.FLAG_IMMERSIVE) != 0;
         } else {
             realActivity = null;
             taskAffinity = null;
@@ -289,6 +293,7 @@ class HistoryRecord extends IApplicationToken.Stub {
             packageName = null;
             fullscreen = true;
             isHomeActivity = false;
+            immersive = false;
         }
     }