How to Reload the fragment from another fragment inside the viewpager in android

Question

now iam having a view pager inside the activity. ViewPager have two fragments. Now i want to reload the fragment while swiping or it gets moved from one fragment to another by using objViewPager.setcurrentitem(0) or objViewPager.setcurrentitem(0). Please help... what i want is i want to refresh the second or first fragment while moved from first to second or second to first fragment respectively.. I have gone through many searches but all told fragment communication alone but not inside the view pager.....please suggest me ideas .

Answer 1

From what i can understand from the question you want to make changes in the fragments when the user swipes right ? Basically you can just make an interface in the activity and implement it in the fragments.Call this interface in the ViewPager.setOnPageChangeListener.(Where the above answer suggested).

Something like this . In the Activity,

public interface FragmentInterface{
    void Fragmentbecamevisible();
}

and call the function in the ViewPager.setOnPageChangeListener

mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
    @Override
    public void onPageScrolled(int i, float v, int i2) {

    }

    @Override
    public void onPageSelected(int i) {
        //do the setselectednavigationitem
        FragmentInterface frag=(FragmentInterface)mAdapter.instantiateItem(viewPager, arg0);
            if(frag!=null)
            {
                frag.Fragmentbecamevisible();
            }

    }

    @Override
    public void onPageScrollStateChanged(int i) {

    }
});

So the interface function is called each time the fragments are switched or whenever swipe function occurs. In the fragments just implement the interface , and in the Fragmentbecamevisible() function ,make all the changes you want to refresh the fragment.

public class Statistics_Fragment extends Fragment implements FragmentInterface
{   
@Override
public void Fragmentbecamevisible() {
    // TODO Auto-generated method stub
    //Make changes to your fragment.Each time the user navigates to this fragment .thhis function gets called


}

Hope this helps . Feel free to make changes.