ViewPager.setOffscreenPageLimit(0) doesn't work as expected

Question

The fragments I use in my ViewPager instance are quite resource intensive, so I\'d only like to load one at a time. When I try the following:

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Answer 1

in my case i wanted to start some animations in views, but with setUserVisibleHint got some issues ...
my solution is :

1/ addOnPageChangeListener for your adapter :

mViewPager.addOnPageChangeListener(this);

2/ implement OnPageChangeListener :

public class PagesFragment extends Fragment implements ViewPager.OnPageChangeListener

3/ override the 3 methodes :

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

}

@Override
public void onPageSelected(int position)
{ 
}

@Override
public void onPageScrollStateChanged(int state)
{
}

4/ declare and initialize this variable on your class

private static int mTabState = 1;

notice : i have three fragments in my adapter, and use mTabState for setCurrentItem and current position of adapter which recognize which fragment is show to user in time ... 5/ in onPageSelected method add this codes :

if (mTabState == 0 || position == 0)
    {
        Intent intent = new Intent("animation");
        intent.putExtra("current_position", position);
        LocalBroadcastManager.getInstance(mContext).sendBroadcast(intent);
    }

if previous page or current page is page 0(fragment in position 0) then do this stuff

6/ now in your fragment class (fragment in position 0 of adapter), you must create broadcast receiver and register it in onResume method and unregister it onPause methos :

BroadcastReceiver broadcastReceiver = new BroadcastReceiver()
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        if (Objects.equals(intent.getAction(), "animation"))
        {
            int currentPosition = intent.getIntExtra("current_position", 0);
            if (currentPosition == 0)
            {
                startAnimation();
                setViewsVisible();
            } else
            {
                setViewsInvisible();
            }
        }
    }
};

@Override
public void onResume()
{
    super.onResume();
    LocalBroadcastManager.getInstance(mContext).registerReceiver(broadcastReceiver, new IntentFilter("animation"));
}

@Override
public void onPause()
{
    super.onPause();
    LocalBroadcastManager.getInstance(mContext).unregisterReceiver(broadcastReceiver);
}

summary : i have Fragment Pager Adapter witch shows Three Fragments in it, I want show some Animations on Views in Fragment in Position 0 of Adapter, For this I use BroadcastReceiver. When Fragment is Picked I start the Animation method and shows the Views to User, When Fragment is not Showing to User I try to Invisible Views...