提交: ca14d4cf8e22abe121fa98c1c54605f8cce6cdf9 - frameworks-base (git)

frameworks/base

Commit MetaInfo

• 修訂: ca14d4cf8e22abe121fa98c1c54605f8cce6cdf9 (tree)
• 時間: 2014-08-27 19:19:18
• 作者: riddle_hsu <riddle_hsu@htc....>
• Commiter: Chih-Wei Huang

Log Message

Fix visibility of multiple non-fullscreen activities.

Issue detail:
Assume X, Y are non-fullscreen activities.

a.Home starts an activity X in task A in application stack.
b.X starts an activity Y in <task A> or <new task B>
c.Activity X will be invisible.

How to fix:
Because the function "isActivityOverHome" means an activity is able to see home.
But there may have many non-fullscreen activities between the top non-fullscreen activity and home.
If flag "behindFullscreen" is set, those middle activities will be invisible.
So it should only take care from who is adjacent to home.
Then check two flags frontOfTask(task root) and mOnTopOfHome for constraining the condition.

Change-Id: I60bcea304976414e44835a0a38675aae365e9e19

Change Summary

• modified: services/java/com/android/server/am/ActivityStack.java

差異

--- a/services/java/com/android/server/am/ActivityStack.java
+++ b/services/java/com/android/server/am/ActivityStack.java
@@ -1145,7 +1145,7 @@ final class ActivityStack {
                     } else if (isActivityOverHome(r)) {
                         if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r);
                         showHomeBehindStack = true;
-                        behindFullscreen = !isHomeStack();
+                        behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome;
                     }
                 } else {
                     if (DEBUG_VISBILITY) Slog.v(