Restore audio settings and wifi.

Optimize backups by writing an entity only if the checksum of the data has changed.
Call into the hidden AudioService API to apply changed audio settings.
After restoring wifi data, make sure that the permissions and ownership are set
properly for the supplicant process to access it.
Locale isn't restoring properly - TODO added.

1 files changed, 6 insertions, 1 deletions

diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
index 2abf8b3..c0de9a5 100644
--- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
+++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
@@ -126,11 +126,14 @@ public class SettingsProvider extends ContentProvider {
         // a notification and then using the contract class to get their data,
         // the system property will be updated and they'll get the new data.
 
+        boolean backedUpDataChanged = false;
         String property = null, table = uri.getPathSegments().get(0);
         if (table.equals("system")) {
             property = Settings.System.SYS_PROP_SETTING_VERSION;
+            backedUpDataChanged = true;
         } else if (table.equals("secure")) {
             property = Settings.Secure.SYS_PROP_SETTING_VERSION;
+            backedUpDataChanged = true;
         } else if (table.equals("gservices")) {
             property = Settings.Gservices.SYS_PROP_SETTING_VERSION;
         }
@@ -142,7 +145,9 @@ public class SettingsProvider extends ContentProvider {
         }
 
         // Inform the backup manager about a data change
-        mBackupManager.dataChanged();
+        if (backedUpDataChanged) {
+            mBackupManager.dataChanged();
+        }
         // Now send the notification through the content framework.
 
         String notify = uri.getQueryParameter("notify");