From 3d9c431ca4311eb8e87d303d2fcd3499c8856101 Mon Sep 17 00:00:00 2001
From: louis_chang <louis_chang@htc.com>
Date: Tue, 2 Dec 2014 12:38:05 +0800
Subject: [PATCH] [ActivityManager] Invalidate last screenshot when activity
 relaunched

Symptom:
The task thumbnail is not updated when activity relaunched.

Reproduce Steps:
1. Put device in portrait
2. Launch Calculator
3. Launch Recent App (the Calculator's screenshot is correct)
4. Rotate device to landscape
5. Click Calculator in Recent App to return to Calculator (Calculator has relaunched to landsacpe ui)
6. Launch Recent App again (the Calculator's screenshot is not updated)

Change-Id: I92e951ea2ee215c52ca6e50cf6f9e02deb787bce
---
 services/core/java/com/android/server/am/ActivityStack.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/services/core/java/com/android/server/am/ActivityStack.java b/services/core/java/com/android/server/am/ActivityStack.java
index e1b827843d6dc..df4bf282e6de9 100644
--- a/services/core/java/com/android/server/am/ActivityStack.java
+++ b/services/core/java/com/android/server/am/ActivityStack.java
@@ -1819,6 +1819,9 @@ final class ActivityStack {
                     // Do over!
                     mStackSupervisor.scheduleResumeTopActivities();
                 }
+                if (next == mLastScreenshotActivity) {
+                    invalidateLastScreenshot();
+                }
                 if (mStackSupervisor.reportResumedActivityLocked(next)) {
                     mNoAnimActivities.clear();
                     if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked();