Log terrible failure on null PiP task token

Log an extra terrible failure for the null PiP task token in
PipController#onDisplayChange. We are not able to reproduce the original
NPE, adding extra log here to help further investigation.

Flag: com.android.wm.shell.enable_pip2
Bug: 378743431
Test: N/A log-only
Change-Id: Iacf3714e7cd201bdaac44a379049119d2c343dc6

1 files changed, 9 insertions, 1 deletions

diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/pip2/phone/PipController.java b/libs/WindowManager/Shell/src/com/android/wm/shell/pip2/phone/PipController.java
index 4e341ac9b7eb..0e974ef9083b 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/pip2/phone/PipController.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/pip2/phone/PipController.java
@@ -31,6 +31,8 @@ import android.content.pm.ActivityInfo;
 import android.content.res.Configuration;
 import android.graphics.Rect;
 import android.os.Bundle;
+import android.os.Debug;
+import android.util.Log;
 import android.view.SurfaceControl;
 import android.window.DesktopExperienceFlags;
 import android.window.DisplayAreaInfo;
@@ -369,7 +371,13 @@ public class PipController implements ConfigurationChangeListener,
             mPipBoundsAlgorithm.applySnapFraction(toBounds, snapFraction);
             mPipBoundsState.setBounds(toBounds);
         }
-        t.setBounds(mPipTransitionState.getPipTaskToken(), mPipBoundsState.getBounds());
+        if (mPipTransitionState.getPipTaskToken() == null) {
+            Log.wtf(TAG, "PipController.onDisplayChange no PiP task token"
+                    + " state=" + mPipTransitionState.getState()
+                    + " callers=\n" + Debug.getCallers(4, "    "));
+        } else {
+            t.setBounds(mPipTransitionState.getPipTaskToken(), mPipBoundsState.getBounds());
+        }
         // Update the size spec in PipBoundsState afterwards.
         mPipBoundsState.updateMinMaxSize(mPipBoundsState.getAspectRatio());
     }