Fragment In ViewPager OnPageSelected() Or OnPageShow()?

Question

Is Fragment in ViewPager has a equivalent method like OnPageSelected() Or OnPageShow() ? I should do something when a specific page is showing?

I set hidden state of each Fragment in onPageScrolled() In page adapter, and I wonder why onHiddenChanged() not be called?

// In PageAdapter(extends FragmentPagerAdapter)

    public void onHiddenChanged(int arg0)
    {
        for (int i = 0; i < getCount(); i++) {
            if (i == arg0) {
                mAdapter.getItem(arg0).onHiddenChanged(true);
            } else {
                mAdapter.getItem(arg0).onHiddenChanged(false);
            }
        }
    }

// in PageActivity(extends FragmentActivity)

public void onPageSelected(int arg0)
{
    mAdapter.onHiddenChanged(arg0);
}

Solved!@see this:http://stackoverflow.com/questions/10024739/how-to-determine-when-fragment-becomes-visible-in-viewpager/12523627#12523627 — thecr0w, Dec 27 '13 at 01:56

score 2 · Accepted Answer · answered Oct 29 '12 at 03:31

2

In Android for ViewPager there is a listener called ViewPager.OnPageChangeListener which has methods like

onPageScrollStateChanged(int state),

onPageScrolled(int position, float positionOffset, int positionOffsetPixels) , 

onPageSelected(int position)

If you want to do some specific task for the page you need to write ViewPager.OnPageChangeListener and override onPageSelected(int position) method.

for more details see here

answered Oct 29 '12 at 03:31

Zombie

1,965
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Solved! @see:http://stackoverflow.com/questions/10024739/how-to-determine-when-fragment-becomes-visible-in-viewpager/12523627#12523627 – thecr0w Dec 27 '13 at 01:57

score 1 · Answer 2 · answered Oct 29 '12 at 03:32

1

You can use OnPageChangeListener. You get a callback when the page is changed, example:

mViewPager.setOnPageChangeListener(new OnPageChangeListener() {

    @Override
    public void onPageSelected(int position) {
        // this will be called when the page is changed
    }

    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) {
    }

    @Override
    public void onPageScrollStateChanged(int arg0) {
    }
});

answered Oct 29 '12 at 03:32

aromero

25,681
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I need to call in Fragment not FragmentTabsActivity, so? – thecr0w Oct 29 '12 at 04:16
Solved! @see:http://stackoverflow.com/questions/10024739/how-to-determine-when-fragment-becomes-visible-in-viewpager/12523627#12523627 – thecr0w Dec 27 '13 at 01:58

Fragment In ViewPager OnPageSelected() Or OnPageShow()?

2 Answers2