Setup swipe to refresh

MainActivity.java

private void setupSwipeToRefresh() {
    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            // Make sure you call swipeRefreshLayout.setRefreshing(false)
            // once the network request has completed successfully.
            inbox();
        }
    });
    // Configure the refreshing colors
    swipeRefreshLayout.setColorSchemeResources(android.R.color.holo_blue_bright,
            android.R.color.holo_green_light,
            android.R.color.holo_orange_light,
            android.R.color.holo_red_light);
}