SyncService.java

package yuku.alkitab.base.sync;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;

/**
 * Define a Service that returns an IBinder for the
 * sync adapter class, allowing the sync adapter framework to call
 * onPerformSync().
 */
public class SyncService extends Service {
	// Storage for an instance of the sync adapter
	private static SyncAdapter sSyncAdapter = null;

	// Object to use as a thread-safe lock
	private static final Object sSyncAdapterLock = new Object();

	/*
	 * Instantiate the sync adapter object.
	 */
	@Override
	public void onCreate() {
		/*
         * Create the sync adapter as a singleton.
         * Set the sync adapter as syncable
         * Disallow parallel syncs
         */
		synchronized (sSyncAdapterLock) {
			if (sSyncAdapter == null) {
				sSyncAdapter = new SyncAdapter(getApplicationContext(), true);
			}
		}
	}

	/**
	 * Return an object that allows the system to invoke
	 * the sync adapter.
	 */
	@Override
	public IBinder onBind(Intent intent) {
        /*
         * Get the object that allows external processes to call onPerformSync(). The object is created
         * in the base class code when the SyncAdapter constructors call super()
         */
		return sSyncAdapter.getSyncAdapterBinder();
	}
}