ViewPager set current page programmatically

Question

I wrote a custom ViewPager to disable Swipe Scroll, but I want to swipe programmatically. I have three Tab in my view pager, but when

Answer 1

try this :

  viewPager.postDelayed(new Runnable() {

    @Override
    public void run() {
        viewPager.setCurrentItem(position);
    }
}, 10);

sometimes, setCurrentItem on viewpager doesn't work. As pager's content was controlled by a spinner. both the spinners and the pagers state were restored onResume, and because of this the spinners onItemSelected listener was called during the next event propagation cycle.

By using handler we can make this work because it set the pagers current position after the onItemSelected event fired.

Answer 2

viewPager.setCurrentItem(idx);

where idx is 0 based integer.

Answer 3

In your PagerActivity use

    viewPager = (ViewPager) findViewById(R.id.view_pager);
    viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageSelected(int position) {
            int pagei = position + 1;
            pages=pagei + "";

            Toast.makeText(PagerActivity.this, getString(R.string.changeinfopage) + " " + pages, Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        }

        @Override
        public void onPageScrollStateChanged(int state) {
        }
    });

and

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {


        switch (item.getItemId()) {

            case R.id.action_previous:

                viewPager.setCurrentItem(viewPager.getCurrentItem() - 1);
                return true;

            case R.id.action_next:

                viewPager.setCurrentItem(viewPager.getCurrentItem() + 1);
                return true;
        }

        return super.onOptionsItemSelected(item);

   }