java多线程之定时任务

Question

线程休眠过程中如果此线程在次调用start方法会怎样，能不关闭线程啊 除了stop方法

Answer 1

  private final ScheduledExecutorService mExecutorService =
            Executors.newSingleThreadScheduledExecutor();

void startThreadTime(){
stopUpdate();
mScheduleFuture = mExecutorService.scheduleAtFixedRate(
                    new Runnable() {
                        @Override
                        public void run() {
                           // doSomething
                        }
                    }, PROGRESS_UPDATE_INITIAL_INTERVAL,
                    PROGRESS_UPDATE_INTERNAL, TimeUnit.MILLISECONDS);
}
  private void stopUpdate() {
        if (mScheduleFuture != null) {
            mScheduleFuture.cancel(false);
        }
    }