Understanding FragmentStatePagerAdapter - android-fragments

Question

I found this code online and am trying to test it out in my project. My project uses a database and I want to swipe between each record so I think ViewPager is the way to go. I have my activity and fragments already working but I have no clue how to implement the attached code into my project. What I'm looking for is where and how do I use this? From the activity or the fragment? and how do I go about doing it. I already have a cursor and the projection but now really sure how the two work together. I hope I'm making sense.
public class CursorPagerAdapter<F extends Fragment> extends FragmentStatePagerAdapter {
private final Class<F> fragmentClass;
private final String[] projection;
private Cursor cursor;
public CursorPagerAdapter(FragmentManager fm, Class<F> fragmentClass, String[] projection, Cursor cursor) {
super(fm);
this.fragmentClass = fragmentClass;
this.projection = projection;
this.cursor = cursor;
}
#Override
public F getItem(int position) {
if (cursor == null) // shouldn't happen
return null;
cursor.moveToPosition(position);
F frag;
try {
frag = fragmentClass.newInstance();
} catch (Exception ex) {
throw new RuntimeException(ex);
}
Bundle args = new Bundle();
for (int i = 0; i < projection.length; ++i) {
args.putString(projection[i], cursor.getString(i));
}
frag.setArguments(args);
return frag;
}
#Override
public int getCount() {
if (cursor == null)
return 0;
else
return cursor.getCount();
}
public void swapCursor(Cursor c) {
if (cursor == c)
return;
this.cursor = c;
notifyDataSetChanged();
}
public Cursor getCursor() {
return cursor;
}
}

Answer 1

This is how you've to modify your code
ItemDetailFragment fragment = new ItemDetailFragment();
fragment.setArguments(arguments);
getSupportFragmentManager().beginTransaction().add(R.id.item_detail_container, fragment).commit();
ViewPager vpPager = (ViewPager) findViewById(R.id.pager);
CursorPagerAdapter<ItemDetailFragment> adapterViewPager = new CursorPagerAdapter(
getSupportFragmentManager(), fragment_class, your_projection, your_cursor);
vpPager.setAdapter(adapterViewPager);