Example usage for android.support.v4.view ViewPager startAnimation

Introduction

In this page you can find the example usage for android.support.v4.view ViewPager startAnimation.

Prototype

public void startAnimation(Animation animation) 

Source Link

Document

Start the specified animation now.

Usage

From source file:com.poloure.simplerss.AsyncNewTagAdapters.java

@Override
protected void onPostExecute(TreeMap<Long, FeedItem>[] result) {
    ViewPager pager = (ViewPager) m_activity.findViewById(R.id.viewpager);
    PagerAdapter pagerAdapter = pager.getAdapter();
    int pageCount = pagerAdapter.getCount();

    for (int i = 0; pageCount > i; i++) {
        // Get the tag page and skip ListViews that are null.
        ListFragmentTag fragment = FragmentFeeds.getViewPagerFragment(i);
        LinkedMapAdapter<Long, FeedItem> adapterTag = fragment.getListAdapter();
        ListViewFeeds listView = fragment.getListView();

        if (null == adapterTag) {
            fragment.setListAdapter(new AdapterFeedItems(m_activity, result[i]));
            listView.setSelectionOldestUnread(m_activity.getReadItemTimes());
        } else {//  w ww.  j ava2  s. c o m
            long topKeyBefore = 0L;
            int top = 0;

            // If there are items in the currently viewed page, save the position.
            boolean firstLoad = null == listView || 0 == listView.getCount();
            if (!firstLoad) {
                // Get the time of the top item.
                int topVisibleItem = listView.getFirstVisiblePosition();
                topKeyBefore = adapterTag.getKey(topVisibleItem);

                View v = listView.getChildAt(0);
                top = null == v ? 0 : v.getTop();
            }

            // Update the feedItems in the adapter.
            adapterTag.replaceAll(result[i]);

            // Now find the position of the item with the time timeBefore.
            if (firstLoad) {
                listView.setSelectionOldestUnread(m_activity.getReadItemTimes());
            } else {
                int newPos = adapterTag.indexOf(topKeyBefore);
                listView.setSelectionFromTop(newPos, top - listView.getPaddingTop());
            }
        }
    }

    // If the pager is invisible, use a fade in animation.
    if (View.VISIBLE != pager.getVisibility()) {
        pager.setVisibility(View.VISIBLE);
        AlphaAnimation animation = new AlphaAnimation(0.0F, 1.0F);
        animation.setDuration(300);
        pager.startAnimation(animation);
    }
}

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