how to stop viewpager auto slide in android

Question

I have made an android app in that i have implemented play pause function,But I only knows about play ,I don't know how to stop sliding on the same button click,I have used two functions for it as below,play is working but pause is not.! onClick

    if (!flag) {
        play();
        new Thread(ViewPagerVisibleScroll).start();
        ivPlay.setBackgroundResource(R.drawable.pause);
        flag = true;

    } else {
        pause();
        new Thread(ViewPagerVisibleScroll).start();
        ivPlay.setBackgroundResource(R.drawable.play_btn);
        flag = false;
    }

play and pause

void play() {

        pos = viewPager.getCurrentItem();
        ViewPagerVisibleScroll = new Runnable() {
            @Override
            public void run() {
                try {
                    if (pos <= adapter.getCount() - 1) {
                        viewPager.setCurrentItem(pos, true);

                        viewPager.setScrollDurationFactor(6);
                        handler.postDelayed(this, 3000);
                        pos++;
                    }
                } catch (Exception e) {

                    e.printStackTrace();
                }
            }
        };
    }

    void pause() {

        pos = viewPager.getCurrentItem();
        ViewPagerVisibleScroll = new Runnable() {
            @Override
            public void run() {
                try {
                    if (pos <= adapter.getCount() - 1) {
                        viewPager.setCurrentItem(pos, true);

                        viewPager.setScrollDurationFactor(6);
                        handler.postDelayed(this, 300000);
                        pos++;
                    }
                } catch (Exception e) {

                    e.printStackTrace();
                }
            }
        };
    }

Answer 1

in pause button click :

handler.removeCallbacksAndMessages(ViewPagerVisibleScroll);

Try this