Android FragmentStatePagerAdapter, how to tag a fragment to find it later

Question

When using the FragmentStatePageAdapter I get the fragments like this:

    @Override
    public Fragment getItem(int position) {
        return          


        

Answer 1

I've found another way of doing it, not sure if there would be any issues for using it, it seems ok to me.

I was checking at the code for FragmentStatePageAdapter and I saw this method:

@Override
52     public Object More ...instantiateItem(View container, int position) {
53         // If we already have this item instantiated, there is nothing
54         // to do.  This can happen when we are restoring the entire pager
55         // from its saved state, where the fragment manager has already
56         // taken care of restoring the fragments we previously had instantiated.
57         if (mFragments.size() > position) {
58             Fragment f = mFragments.get(position);
59             if (f != null) {
60                 return f;
61             }
62         }
63 
64         if (mCurTransaction == null) {
65             mCurTransaction = mFragmentManager.beginTransaction();
66         }
67 
68         Fragment fragment = getItem(position);
69         if (DEBUG) Log.v(TAG, "Adding item #" + position + ": f=" + fragment);
70         if (mSavedState.size() > position) {
71             Fragment.SavedState fss = mSavedState.get(position);
72             if (fss != null) {
73                 fragment.setInitialSavedState(fss);
74             }
75         }
76         while (mFragments.size() <= position) {
77             mFragments.add(null);
78         }
79         fragment.setMenuVisibility(false);
80         mFragments.set(position, fragment);
81         mCurTransaction.add(container.getId(), fragment);
82 
83         return fragment;
84     }

You can use this method to get the fragment already instated for that particular position. So if you want to get Fragment at position 1, you just need to call:

myFragmentStatePageAdpater.instantiateItem(null, 1)

Hope that helps