Pass configuration changes to all pages

In PagedTileLayout, all pages are inflated previously and the view pager
only attaches/dettaches pages. However, configuration changes are only
dispatched to direct children of the view. This change makes it so that
non-attached pages are also notified.

In particular, fontWeightAdjustment was not being passed, and it's not
one of the changes that causes fragments in SystemUI to be reinflated.

Test: manual
Fixes: 200882432
Change-Id: Ie2bd0eccf1d1e71f364501612bb6e6be8aa29bc9

packages/SystemUI/src/com/android/systemui/qs/PagedTileLayout.java

@@ -112,6 +112,16 @@ public class PagedTileLayout extends ViewPager implements QSTileLayout {
     @Override
     protected void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
+        // Pass configuration change to non-attached pages as well. Some config changes will cause
+        // QS to recreate itself (as determined in FragmentHostManager), but in order to minimize
+        // those, make sure that all get passed to all pages.
+        int numPages = mPages.size();
+        for (int i = 0; i < numPages; i++) {
+            View page = mPages.get(i);
+            if (page.getParent() == null) {
+                page.dispatchConfigurationChanged(newConfig);
+            }
+        }
         if (mLayoutOrientation != newConfig.orientation) {
             mLayoutOrientation = newConfig.orientation;
             mDistributeTiles = true;