Add getCurrentSyncs() to the SDK, which replaces the deprecated

getCurrentSync().

Change-Id: I1112df41e48ed93ff4c0c5af4825dbdce0c4cccc

api/current.xml

@@ -44007,6 +44007,17 @@
  synchronized="false"
  static="true"
  final="false"
+ deprecated="deprecated"
+ visibility="public"
+>
+</method>
+<method name="getCurrentSyncs"
+ return="java.util.List&lt;android.content.SyncInfo&gt;"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="true"
+ final="false"
  deprecated="not deprecated"
  visibility="public"
 >
@@ -54150,6 +54161,34 @@
  deprecated="not deprecated"
  visibility="public"
 >
+<implements name="android.os.Parcelable">
+</implements>
+<method name="describeContents"
+ return="int"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
+<method name="writeToParcel"
+ return="void"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+<parameter name="parcel" type="android.os.Parcel">
+</parameter>
+<parameter name="flags" type="int">
+</parameter>
+</method>
 <field name="account"
  type="android.accounts.Account"
  transient="false"
@@ -242757,7 +242796,7 @@
  deprecated="not deprecated"
  visibility="public"
 >
-<parameter name="t" type="T">
+<parameter name="arg0" type="T">
 </parameter>
 </method>
 </interface>

core/java/android/content/ContentResolver.java

@@ -1319,12 +1319,36 @@ public abstract class ContentResolver {
     }
 
     /**
-     * If a sync is active returns the information about it, otherwise returns false.
+     * If a sync is active returns the information about it, otherwise returns null.
+     * <p>
      * @return the SyncInfo for the currently active sync or null if one is not active.
+     * @deprecated
+     * Since multiple concurrent syncs are now supported you should use
+     * {@link #getCurrentSyncs()} to get the accurate list of current syncs.
+     * This method returns the first item from the list of current syncs
+     * or null if there are none.
      */
+    @Deprecated
     public static SyncInfo getCurrentSync() {
         try {
-            return getContentService().getCurrentSync();
+            final List<SyncInfo> syncs = getContentService().getCurrentSyncs();
+            if (syncs.isEmpty()) {
+                return null;
+            }
+            return syncs.get(0);
+        } catch (RemoteException e) {
+            throw new RuntimeException("the ContentService should always be reachable", e);
+        }
+    }
+
+    /**
+     * Returns a list with information about all the active syncs. This list will be empty
+     * if there are no active syncs.
+     * @return a List of SyncInfo objects for the currently active syncs.
+     */
+    public static List<SyncInfo> getCurrentSyncs() {
+        try {
+            return getContentService().getCurrentSyncs();
         } catch (RemoteException e) {
             throw new RuntimeException("the ContentService should always be reachable", e);
         }

core/java/android/content/ContentService.java

@@ -386,19 +386,15 @@ public final class ContentService extends IContentService.Stub {
         return false;
     }
 
-    public SyncInfo getCurrentSync() {
+    public List<SyncInfo> getCurrentSyncs() {
         mContext.enforceCallingOrSelfPermission(Manifest.permission.READ_SYNC_STATS,
                 "no permission to read the sync stats");
         long identityToken = clearCallingIdentity();
         try {
-            SyncManager syncManager = getSyncManager();
-            if (syncManager != null) {
-                return syncManager.getSyncStorageEngine().getCurrentSync();
-            }
+            return getSyncManager().getSyncStorageEngine().getCurrentSyncs();
         } finally {
             restoreCallingIdentity(identityToken);
         }
-        return null;
     }
 
     public SyncStatusInfo getSyncStatus(Account account, String authority) {

core/java/android/content/IContentService.aidl

@@ -104,7 +104,7 @@ interface IContentService {
      */
     boolean isSyncActive(in Account account, String authority);
 
-    SyncInfo getCurrentSync();
+    List<SyncInfo> getCurrentSyncs();
 
     /**
      * Returns the types of the SyncAdapters that are registered with the system.

core/java/android/content/SyncInfo.java

@@ -18,12 +18,13 @@ package android.content;
 
 import android.accounts.Account;
 import android.os.Parcel;
+import android.os.Parcelable;
 import android.os.Parcelable.Creator;
 
 /**
  * Information about the sync operation that is currently underway.
  */
-public class SyncInfo {
+public class SyncInfo implements Parcelable {
     /** @hide */
     public final int authorityId;
 

core/java/android/content/SyncStorageEngine.java

@@ -1087,23 +1087,6 @@ public class SyncStorageEngine extends Handler {
         reportChange(ContentResolver.SYNC_OBSERVER_TYPE_STATUS);
     }
 
-    /**
-     * Return the currently active sync information, or null if there is no
-     * active sync.  Note that the returned object is the real, live active
-     * sync object, so be careful what you do with it.
-     * <p>
-     * Since multiple concurrent syncs are now supported you should use
-     * {@link #getCurrentSyncs()} to get the accurate list of current syncs.
-     * This method returns the first item from the list of current syncs
-     * or null if there are none.
-     * @deprecated use {@link #getCurrentSyncs()}
-     */
-    public SyncInfo getCurrentSync() {
-        synchronized (mAuthorities) {
-            return !mCurrentSyncs.isEmpty() ? mCurrentSyncs.get(0) : null;
-        }
-    }
-
     /**
      * Return a list of the currently active syncs. Note that the returned items are the
      * real, live active sync objects, so be careful what you do with it.