Non stop auto scroll of viewpager in android

问题

I have used timer to auto swipe the viewpager. But after reaching the last page the timer stops. How to make it to continue again from the first page?

final Handler mHandler = new Handler();
    final Runnable mUpdateResults = new Runnable() {
        public void run() {
            pager.setCurrentItem(page++);

        }
    };

    int delay = 1000; // delay for 1 sec.

    int period = 4000; // repeat every 4 sec.

    Timer timer = new Timer();

    timer.scheduleAtFixedRate(new TimerTask() {

    public void run() {

         mHandler.post(mUpdateResults);

    }

    }, delay, period);

回答1:

final Runnable mUpdateResults = new Runnable() {
    public void run() {
        int numPages = pager.getAdapter().getCount();
        page = (page + 1) % numPages;
        pager.setCurrentItem(page);

    }
};

That will set the current item to 0 when it exceeds the pager limits

回答2:

Below answer will be helpful;

 TimerTask timer = new TimerTask() {
    @Override
    public void run() {
      handler.post(new Runnable() {

         @Override
             public void run() {
                int numPages = viewPager.getAdapter().getCount();
                page = (page + 1) % numPages;
                viewPager.setCurrentItem(page);
            }
      });
 }
};
Timer time = new Timer();
time.schedule(timer, 0, 5000);

来源：https://stackoverflow.com/questions/30301113/non-stop-auto-scroll-of-viewpager-in-android