问如何初始化我的ViewPager

EN

private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
        Cursor data;
        ArticleDetailUpdateFragment detailUpdateFragment;

        public ScreenSlidePagerAdapter(FragmentManager fm, Cursor data) {
            super(fm);
            this.data = data;

            detailUpdateFragment = new ArticleDetailUpdateFragment();
            long id = getIntent().getLongExtra(ArticleListActivity.EXTRA_ITEM_ID, -1);
            Log.d(TAG, "the itemId received in detail activity: " + String.valueOf(id));
            detailUpdateFragment.setId(id);

            // Add the fragment to the 'fragment_container' FrameLayout
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.pager, detailUpdateFragment).commit();
        }

        @Override
        public Fragment getItem(int position) {
            detailUpdateFragment = new ArticleDetailUpdateFragment();
            data.moveToPosition(position);
            long id = data.getLong(data.getColumnIndex(ItemsContract.Items._ID));
            detailUpdateFragment.setId(id);

            return detailUpdateFragment;
        }

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