How to use the DriveApi.OnSyncFinishCallback (Android's Google Play Services) -

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the android's developer documentation states can use driveapi.onsyncfinishcallback (presumably) handle when synchronization between local contet , google drive account completed. such synchronization appens automatically, trasparently managed google play services, apparently can force sync request call to:

drive.driveapi.requestsync(mgoogleapiclient);

i "apparently" because official documentation of function poor, @ least (https://developer.android.com/reference/com/google/android/gms/drive/driveapi.html#requestsync(com.google.android.gms.common.api.googleapiclient))

anyway, onsyncfinishcallback can instantiated code:

onsyncfinishcallback mycallback = new onsyncfinishcallback(){      @override     public void onsyncfinish(com.google.android.gms.common.api.status arg0) {         // todo auto-generated method stub      }  };

my question , how can register callback called automatically when sync completed? requestsync call returns pendingresult have setresultcallback(resultcallback arg0) method, can't used onsyncfinishcallback.

i must requestsync working absolutely fine me (january 2015, google play services 6.5.87). backup of database on 1 device , restore on device, before restore call requestsync way:

    drive.driveapi.requestsync(mgoogleapiclient)             .setresultcallback(new resultcallback<status>() {                 @override                 public void onresult(status result) {                     if (!result.issuccess()) {                         // sync not ok                         showmessage("sync error");                         return;                     }                     // sync ok. can safely query                     // database file , restore it.                     ...

by way, i'm using root folder, not appfolder. appfolder might have additional synchronization issues when installing/uninstalling app different devices, moment prefer stick root folder.


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