SyncAdapter.java 文件源码

/**
 * Called by the Android system in response to a request to run the sync adapter. The work
 * required to read data from the network, parse it, and store it in the content provider
 * should be done here. Extending AbstractThreadedSyncAdapter ensures that all methods within SyncAdapter
 * run on a background thread. For this reason, blocking I/O and other long-running tasks can be
 * run <em>in situ</em>, and you don't have to set up a separate thread for them.
 *
 * <p>
 * <p>This is where we actually perform any work required to perform a sync.
 * {@link AbstractThreadedSyncAdapter} guarantees that this will be called on a non-UI thread,
 * so it is safe to perform blocking I/O here.
 * <p>
 *
 * <p>The syncResult argument allows you to pass information back to the method that triggered
 * the sync.
 */
@Override
public void onPerformSync(Account account, Bundle extras, String authority,
                          ContentProviderClient provider, SyncResult syncResult) {

    // Your code to sync data
    // between mobile database and
    // the server goes here.

    for (int i = 0; i < 15; i++) {
        try {
            Thread.sleep(1000);
            Log.i(TAG, ">>>> sleeping the thread: " + (i + 1));
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }   // end for

    // write DB data sanity checks at the end.
}