Android: direct scrolling/ displaying a particular page in ViewPager on button click

Question

I am trying to display a particular page of a ViewPager on button click. It is working but scrolling to that particular page is not smooth i.e. suppose I am at page no. 1 but if I want to go to page no. 5, other pages 2,3,4 also scrolls. I just want to scroll to that particular page. How to do it. I have used the following code, please have a look:

Below code is the FragmentActivity:

public class ScreenSlideFragmentActivity extends FragmentActivity implements SlidingPageInterface{
    private static final int NUM_PAGES = 6;
    private ViewPager mPager;
    private PagerAdapter mPagerAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_screen_slide);
        mPager = (ViewPager) findViewById(R.id.pager);
        mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager());
        mPager.setAdapter(mPagerAdapter);
        mPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {
            }
        });
    }

    private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
        public ScreenSlidePagerAdapter(android.support.v4.app.FragmentManager fragmentManager) {
            super(fragmentManager);
        }

        @Override
        public android.support.v4.app.Fragment getItem(int position) {
            return ScreenSlidePageFragment.create(position, NUM_PAGES, ScreenSlideFragmentActivity.this);
        }

        @Override
        public int getCount() {
            return NUM_PAGES;
        }
    }

    @Override
    public void notifyToSlideToRespectivePage(int pageNumber) {
        mPager.setCurrentItem(pageNumber, true);
    }
}

Below code is the Fragment:

public class ScreenSlidePageFragment extends android.support.v4.app.Fragment {
        public static final String ARG_CURRENT_PAGE = "current_page";
        public static final String ARG_TOTAL_PAGE_COUNT = "total_page_count";
        private int mPageNumber;
        private int mTotalPageCount;
        private static ScreenSlideFragmentActivity mActivity;
        public static ScreenSlidePageFragment create(int pageNumber, int totalNoPages, ScreenSlideFragmentActivity activity) {
            Log.e("create", "create called");
            ScreenSlidePageFragment fragment = new ScreenSlidePageFragment();
            Bundle args = new Bundle();
            args.putInt(ARG_CURRENT_PAGE, pageNumber);
            args.putInt(ARG_TOTAL_PAGE_COUNT, totalNoPages);
            fragment.setArguments(args);
            mActivity = activity;
            return fragment;
        }

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            mPageNumber = getArguments().getInt(ARG_CURRENT_PAGE);
            mTotalPageCount = getArguments().getInt(ARG_TOTAL_PAGE_COUNT);
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {        
            ViewGroup rootView = (ViewGroup) inflater
                    .inflate(R.layout.fragment_screen_slide_page, container, false);

            // Write Logic below to Dynamically Display Buttons as per "total_page_count"

            return rootView;
        }
        public int getPageNumber() {
            return mPageNumber;
        }

        public class HandleDotIVClickListener implements View.OnClickListener {
            @Override
            public void onClick(View view) {            
                int tag = (Integer) view.getTag();
                mActivity.notifyToSlideToRespectivePage(tag);
            }

        }
    }

Any ideas, how to achieve this.

Answer 1

I had an application where there was more than 100 pages, and an index page which leads to particular page number. From Index page if i tried to go to 20 page, i can see a blink in the screen which goes from 1 -19 then to 20.

I used the below if i want to go to 5th page

viewPager.setCurrentItem(4,false);
viewPager.setCurrentItem(5);

Which made the scroll stopped and made to go to particular page without showing the other pages and no blink in the screen.