Merge "Update the split layout while density changed" into udc-dev

libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitLayout.java

@@ -717,6 +717,10 @@ public final class SplitLayout implements DisplayInsetsController.OnInsetsChange
         return bounds.width() > bounds.height();
     }
 
+    public boolean isDensityChanged(int densityDpi) {
+        return mDensity != densityDpi;
+    }
+
     /**
      * Return if this layout is landscape.
      */

libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java

@@ -2175,6 +2175,14 @@ public class StageCoordinator implements SplitLayout.SplitLayoutHandler,
             return;
         }
         mDisplayLayout.set(mDisplayController.getDisplayLayout(displayId));
+
+        if (mSplitLayout != null && mSplitLayout.isDensityChanged(newConfig.densityDpi)
+                && mMainStage.isActive()
+                && mSplitLayout.updateConfiguration(newConfig)
+                && ENABLE_SHELL_TRANSITIONS) {
+            mSplitLayout.update(null /* t */);
+            onLayoutSizeChanged(mSplitLayout);
+        }
     }
 
     void updateSurfaces(SurfaceControl.Transaction transaction) {