Inform libcore of time format pref. changes.

- Introduce a boolean extra for intent TIME_CHANGED that
  specifies if the user wants a 24 hour format or not.
- Have the ActivityManagerService inform running processes
  of changes to this preference.
- Add plumbing in ActivityThread to inform j.t.DateFormat

Change-Id: I05fafb903ae54e39c03a048b7a219dc5a93fd472

1 files changed, 13 insertions, 0 deletions

diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index d3080e5..9243095 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -68,6 +68,7 @@ import android.os.SystemClock;
 import android.os.SystemProperties;
 import android.os.Trace;
 import android.os.UserHandle;
+import android.provider.Settings;
 import android.util.AndroidRuntimeException;
 import android.util.ArrayMap;
 import android.util.DisplayMetrics;
@@ -106,6 +107,7 @@ import java.io.PrintWriter;
 import java.lang.ref.WeakReference;
 import java.net.InetAddress;
 import java.security.Security;
+import java.text.DateFormat;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
@@ -1095,6 +1097,11 @@ public final class ActivityThread {
         public void scheduleInstallProvider(ProviderInfo provider) {
             sendMessage(H.INSTALL_PROVIDER, provider);
         }
+
+        @Override
+        public final void updateTimePrefs(boolean is24Hour) {
+            DateFormat.set24HourTimePref(is24Hour);
+        }
     }
 
     private class H extends Handler {
@@ -1144,6 +1151,7 @@ public final class ActivityThread {
         public static final int REQUEST_ASSIST_CONTEXT_EXTRAS = 143;
         public static final int TRANSLUCENT_CONVERSION_COMPLETE = 144;
         public static final int INSTALL_PROVIDER        = 145;
+
         String codeToString(int code) {
             if (DEBUG_MESSAGES) {
                 switch (code) {
@@ -4189,6 +4197,11 @@ public final class ActivityThread {
                 Log.e(TAG, "Unable to setupGraphicsSupport due to missing cache directory");
             }
         }
+
+
+        final boolean is24Hr = "24".equals(mCoreSettings.getString(Settings.System.TIME_12_24));
+        DateFormat.set24HourTimePref(is24Hr);
+
         /**
          * For system applications on userdebug/eng builds, log stack
          * traces of disk and network access to dropbox for analysis.