NAOSDK services need ressources for the SDK to provide users with a location. The services inputs (e.g. positioning database) can either be stored in your application assets or downloaded from NAO Cloud at runtime in a synchronization step. You can be notified of the synchronization result with a NAOSyncListener on Android or a NAOSyncDelegate on iOS.

This page shows the different available synchronization method.

Standard synchronization

• On the NAOSDK service handle object you’ve created you can call the synchronization methods

Android

 public void synchronizeData(final NAOSyncListener listener)

iOS

(void)synchronizeData:(id<NAOSyncDelegate>)delegate;

Periodic synchronization

• Since NAO® SDK V4.11.3, applications can now use the auto periodic synchronization.

How to configure on NAOCloud

Go to ‘Developer’ → ‘API Keys’ and click on your current apikey

You can now ‘Edit’ to configure the period in seconds

How to use with NAOSDK

The application must do a first synchronization to retrieve the configuration file, and each time the location service is started, the synchronization will automatically run with the period configured in the apikey.

Multisite synchronization

NAOSDK has a multisite mode, that works by combining several NAOCloud sites ressources under the same Apikey.

Using the standard synchronization with a multisite Apikey will download all the related ressources of all sites.

This can be an issue when the ressources total size is large.

Site list synchronization

• You can choose the list of sites ressources you need to download (ex: ressource of a user favorite or user selected sites from your application)

Android

 public void synchronizeData(final NAOSyncListener listener, final ArrayList<String> siteIdsList)

iOS

(void)synchronizeData:(id<NAOSyncDelegate>)delegate forSites:(NSArray*)siteIds;

Auto synchronization

• When the total size of the different sites ressources is large, you can let NAOSDK dynamically manage the download of the resources based on the user location.

Android

 public void synchronizeData(final NAOSyncListener listener, final Boolean auto)

iOS

(void)synchronizeData:(id<NAOSyncDelegate>)delegate withAutoSync:(bool)autoSync;