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

Question

The Android's developer documentation states that you can use a DriveApi.OnSyncFinishCallback to (presumably) handle when a synchronization between your local contet and your google drive account is completed. Normally such synchronization appens automatically, trasparently managed by Google Play Services, but apparently you can force a sync request with a call to:

Drive.DriveApi.requestSync(mGoogleApiClient);

I say "apparently" because the official documentation of this function is very poor, at least (https://developer.android.com/reference/com/google/android/gms/drive/DriveApi.html#requestSync(com.google.android.gms.common.api.GoogleApiClient))

Anyway, a OnSyncFinishCallback can be instantiated with this code:

OnSyncFinishCallback myCallback = new OnSyncFinishCallback(){

    @Override
    public void onSyncFinish(com.google.android.gms.common.api.Status arg0) {
        // TODO Auto-generated method stub

    }

};

My question is where and how can I register this callback so it will be called automatically when the sync is completed? The requestSync call returns a PendingResult that only have a setResultCallback(ResultCallback arg0) method, that can't be used for a OnSyncFinishCallback.

Answer 1

It turned out that OnSyncFinishCallback was removed from API and DriveAPI.requestSync() doesn't do what it's supposed to. Fortunately Google just introduced new Drive API for Android in version 6.1 of Google Play Services, in particular the Completion Events, that makes exactly what OnSyncFinishCallback was supposed to do. More official detail here https://developers.google.com/drive/android/completion