recyclerview snaphelper callbacks android

1mRecyclerView.setHasFixedSize(true);
2
3    // use a linear layout manager
4    mLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
5    mRecyclerView.setLayoutManager(mLayoutManager);
6
7    // specify an adapter (see also next example)
8    mAdapter = new DemoSlidesAdapter(getApplicationContext());
9    mRecyclerView.setAdapter(mAdapter);
10
11    final SnapHelper snapHelper = new LinearSnapHelper();
12    snapHelper.attachToRecyclerView(mRecyclerView);
13
14    mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
15
16        @Override
17        public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
18            super.onScrollStateChanged(recyclerView, newState);
19            if(newState == RecyclerView.SCROLL_STATE_IDLE) {
20                View centerView = snapHelper.findSnapView(mLayoutManager);
21                int pos = mLayoutManager.getPosition(centerView);
22                Log.e("Snapped Item Position:",""+pos);
23            }
24        }
25    });
26