How to programmatically show next view in ViewPager?
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22-10-2019 - |
Pergunta
I created a ViewPager and everything is working fine, however I want to have a previous next button outside of ViewPager which can be used to navigate inside ViewPager. How can I go to next Item on ViewPager without swiping manually?
Solução
As blessenm answered viewpager.setCurrentItem(int index)
is the way to go.
Outras dicas
A complete implementation just for completeness:
public void MoveNext(View view) {
//it doesn't matter if you're already in the last item
pager.setCurrentItem(pager.getCurrentItem() + 1);
}
public void MovePrevious(View view) {
//it doesn't matter if you're already in the first item
pager.setCurrentItem(pager.getCurrentItem() - 1);
}
Easiest way is:
nextButton.setOnClickListener { pager.arrowScroll(View.FOCUS_RIGHT) }
prevButton.setOnClickListener { pager.arrowScroll(View.FOCUS_LEFT) }
i fix it Better, ty Androiderson.
private void MoveNextTopSlideShow(View view)
{
if (_viewPager_TopImageSlide.CurrentItem == _viewPager_TopImageSlide.ChildCount)
{
if (_viewPager_TopImageSlide.ChildCount > 0)
{
_viewPager_TopImageSlide.SetCurrentItem(0,true);
}
}
else
{
//it doesn't matter if you're already in the last item
_viewPager_TopImageSlide.SetCurrentItem(_viewPager_TopImageSlide.CurrentItem + 1, true);
}
}
private void MovePreviousTopSlideShow(View view)
{
if (_viewPager_TopImageSlide.CurrentItem == 0)
{
if (_viewPager_TopImageSlide.ChildCount > 0)
{
_viewPager_TopImageSlide.SetCurrentItem(_viewPager_TopImageSlide.ChildCount-1, true);
}
}
else
{
//it doesn't matter if you're already in the first item
_viewPager_TopImageSlide.SetCurrentItem(_viewPager_TopImageSlide.CurrentItem - 1, true);
}
}
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