Android服务没有执行其他方法

Question

由于某些原因，TimerTask没有执行我创建的SetSettings方法。计时器继续执行日志记录和通知方法，但没有别的

public class Notification extends Service {
 private final long mDelay = 0;
 private final long mPeriod = 5000;
 private final String LOGTAG = "test";
 private Timer mTimer;
 private class LogTask extends TimerTask {
      public void run() {
          Log.i("test","startedfdf");
          dbFunctions dbfunct = new dbFunctions();
          dbfunct.Notifications();
          dbfunct.setSetting("LastNotifCheck", "now!");
      }
     }