commit fb9d78afb77b1d304b24f470a637244d52a7e1df
author Jorim Jaggi <jjaggi@google.com> Thu Jan 05 18:57:12 2017 +0100
committer Jorim Jaggi <jjaggi@google.com> Wed Jan 18 01:50:51 2017 +0100
tree 5f44d2bc48f8df4dde0ffece191ab8eaac895dbd
parent 10abe2fe297ce1ec60c15a3bd947757aee5b14b3

Add a listener when task snapshots change

Since we start recents before we take the snapshot, we need to add
a mechanism to inform recents about task snapshots changes.

We add a new method to TaskStackChangedListener,
onTaskSnapshotChanged, which gets called whenever a task snapshot
changes. Then, SystemUI registers such a listener and updates the
task thumbnail view for the specific task.

Test: Open app, press recents, make sure thumbnail is up-to-date
Bug: 31339431
Change-Id: I01e81b9cd11886da734da671c68d5732aa51009f

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

diff --git a/services/core/java/com/android/server/am/TaskRecord.java b/services/core/java/com/android/server/am/TaskRecord.java
index 9e22c50..c3f657e 100644
--- a/services/core/java/com/android/server/am/TaskRecord.java
+++ b/services/core/java/com/android/server/am/TaskRecord.java
@@ -52,6 +52,8 @@
 import com.android.internal.util.XmlUtils;
 
 import com.android.server.wm.TaskWindowContainerController;
+import com.android.server.wm.TaskWindowContainerListener;
+
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 import org.xmlpull.v1.XmlSerializer;
@@ -103,7 +105,7 @@
 import static com.android.server.am.ActivityRecord.STARTING_WINDOW_SHOWN;
 import static com.android.server.am.ActivityStackSupervisor.PRESERVE_WINDOWS;
 
-final class TaskRecord extends ConfigurationContainer {
+final class TaskRecord extends ConfigurationContainer implements TaskWindowContainerListener {
     private static final String TAG = TAG_WITH_CLASS_NAME ? "TaskRecord" : TAG_AM;
     private static final String TAG_ADD_REMOVE = TAG + POSTFIX_ADD_REMOVE;
     private static final String TAG_RECENTS = TAG + POSTFIX_RECENTS;
@@ -410,8 +412,8 @@
 
         final Rect bounds = updateOverrideConfigurationFromLaunchBounds();
         final Configuration overrideConfig = getOverrideConfiguration();
-        mWindowContainerController = new TaskWindowContainerController(taskId, getStackId(), userId,
-                bounds, overrideConfig, mResizeMode, isHomeTask(), isOnTopLauncher(), onTop,
+        mWindowContainerController = new TaskWindowContainerController(taskId, this, getStackId(),
+                userId, bounds, overrideConfig, mResizeMode, isHomeTask(), isOnTopLauncher(), onTop,
                 showForAllUsers);
     }
 
@@ -427,6 +429,11 @@
         mWindowContainerController = null;
     }
 
+    @Override
+    public void onSnapshotChanged(TaskSnapshot snapshot) {
+        mService.mTaskChangeNotificationController.notifyTaskSnapshotChanged(taskId, snapshot);
+    }
+
     void setResizeMode(int resizeMode) {
         if (mResizeMode == resizeMode) {
             return;