Set the default locale list when it is changed.

When the system language is changed by the Settings app, we need to call
LocaleList.setDefault() to change the default locale list
since components like TextView should be able to assume that
LocaleList.getDefault() returns the latest system locale list.

BUG: 26731035
Change-Id: I482567476e1b14cd9b4716343183627f81d96ace

2 files changed, 7 insertions, 6 deletions

diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 93122ddb1c94..7b0195391b47 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -83,6 +83,7 @@ import android.util.AndroidRuntimeException;
 import android.util.ArrayMap;
 import android.util.DisplayMetrics;
 import android.util.EventLog;
+import android.util.LocaleList;
 import android.util.Log;
 import android.util.LogPrinter;
 import android.util.Pair;
@@ -128,7 +129,6 @@ import java.text.DateFormat;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
-import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.TimeZone;
@@ -4887,9 +4887,9 @@ public final class ActivityThread {
         TimeZone.setDefault(null);
 
         /*
-         * Initialize the default locale in this process for the reasons we set the time zone.
+         * Initialize the default locales in this process for the reasons we set the time zone.
          */
-        Locale.setDefault(data.config.locale);
+        LocaleList.setDefault(data.config.getLocales());
 
         /*
          * Update the system configuration since its preloaded and might not
diff --git a/core/java/android/app/ResourcesManager.java b/core/java/android/app/ResourcesManager.java
index 318798458ef0..260216cfefb8 100644
--- a/core/java/android/app/ResourcesManager.java
+++ b/core/java/android/app/ResourcesManager.java
@@ -27,6 +27,7 @@ import android.content.res.ResourcesKey;
 import android.hardware.display.DisplayManagerGlobal;
 import android.util.ArrayMap;
 import android.util.DisplayMetrics;
+import android.util.LocaleList;
 import android.util.Log;
 import android.util.Pair;
 import android.util.Slog;
@@ -34,7 +35,6 @@ import android.view.Display;
 import android.view.DisplayAdjustments;
 
 import java.lang.ref.WeakReference;
-import java.util.Locale;
 
 /** @hide */
 public class ResourcesManager {
@@ -284,8 +284,9 @@ public class ResourcesManager {
         }
 
         // set it for java, this also affects newly created Resources
-        if (config.locale != null) {
-            Locale.setDefault(config.locale);
+        final LocaleList localeList = config.getLocales();
+        if (!localeList.isEmpty()) {
+            LocaleList.setDefault(localeList);
         }
 
         Resources.updateSystemConfiguration(config, defaultDisplayMetrics, compat);