autoPlay method

void autoPlay()

Implementation

void autoPlay() {
  _timer = Timer.periodic(Duration(milliseconds: widget.playDuration),
      (Timer timer) {
    if (widget.cycle) {
      if (_index == widget.itemCount) {
        _pageController.jumpToPage(0);
      }
      nextPage();
    } else if (_index == widget.itemCount - 1) {
      setIndex(0);
    } else {
      nextPage();
    }
  });
}