Access ViewPager's Parent Fragment View in child fragment of Pager

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I want to access a parent Fragment views in a child fragment which is attached with a View Pager. Means Parent Fragment contains a View Pager and View Pager then have a Fragment, and I want to use Parent Fragment Views in current Fragment of Pager.

Parent Fragment---->(Contains)View Pager------>(Contains)Child Fragment. Child Fragment wants to use Parent Fragment multiple views. Please suggest any solution regarding the same.

Thanks in advance.

in your child fragment use:

ParentFragment frag = ((ParentFragment)this.getParentFragment());

and in your parent fragment you can store the references of your required views and use getter setter to access them, another solution is creating a listener interface. follow below link to find out how to implement:

http://developer.android.com/training/basics/fragments/communicating.html

ViewPager with FragmentPagerAdapter, A ViewPager is a layout which can be added to any layout XML file inside a root We can access the selected page within the ViewPager at any time with the  ViewPager uses an adapter controller object that sits between the ViewPager and the data source (see the illustration in Adapter). In order to access this data, ViewPager requires that you provide a custom adapter derived from PagerAdapter. This adapter populates each ViewPager page with content from the data source. Because this data source is app-specific, the custom adapter is the code that understands how to access the data.

You can use the below code.

        FloatingActionButton fab =  getParentFragment().getView().findViewById(R.id.menu_item);

Slide between fragments using ViewPager, ViewPager2 is built on RecyclerView , which means it has access to the DiffUtil utility class. This results in several benefits, but most notably it  In this approach, the user swipes left or right to access pages of content (for example, in a setup wizard or a slide show). You can create these swipe views by using the ViewPager widget, available in Android Support Library v4. The ViewPager is a layout widget made up of multiple child views where each child view constitutes a page in the layout:

Inside Parent Fragment

     ViewPagerAdapter adapter = new ViewPagerAdapter(getChildFragmentManager())

make sure it is getChildFragmentManager()

and inside the child fragment, to access anything from parent fragment

     ((ParentFragment)this.getParentFragment()).any_thing_inside_parent_fragment;

Migrate from ViewPager to ViewPager2, PagerAdapter Method Call, Access, Type, and Data or Object TypeAlong with of a ViewPage as percent CharSequence getPageTitle() Called by a ViewPager​  Fragment page = getSupportFragmentManager().findFragmentByTag("android:switcher:" + R.id.viewpager + ":" + viewPager.getCurrentItem()); Replace R.id.viewpager with your viewpager id. You cannot use this code inside onCreate method because fragments UI are not yet created. In this case, you can do this

I was trying to get a sibling Fragment using the parent so I tried to use getParentFragment() from the child Fragment and it was always returning null. So instead I just got the fragment from the viewpagerAdapter here's what I did to access a sibling Fragment:

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
    mViewPager = (ViewPager) container;
    BasePagerAdapter bpa = (BasePagerAdapter) mViewPager.getAdapter();
    MySiblingFragment f = (MySiblingFragment) bpa.getItem(1); //I know the position of the fragment so I hardcoded it

}

hopes this will help someone.

Pro Android UI, We have a fragment within the app which calls a view pager that needs a fragment adapter to instantiate a new fragment to show an image (a list  Step 1: Put a ViewPager widget in your xml layout. I put the widget in activity_main.xml and assigned its id to be Step 2: Set up the child Fragments you would like to display. I made 3 child Fragments, calling them ChildFragment1, Step 3: Make an adapter for the ViewPager. You will have to

I get the variable and view from activity using this

YourActivity activity = (YourActivity) getActivity();
activity.mVar = 1;
activity.textView.setText("Number "+activity.mVar);

The easiest way to work with ViewPager and without fragments, Access current Fragment from ViewPager: This is also very common issue we come across. For this people either create array list of fragments  Questions: I want to access a parent Fragment views in a child fragment which is attached with a View Pager. Means Parent Fragment contains a View Pager and View Pager then have a Fragment, and I want to use Parent Fragment Views in current Fragment of Pager.

Android Fragments Common Queries & Common Mistakes , To access this data, ViewPager requires that you provide a custom adapter derived from PagerAdapter . Because this example uses fragments,  We can access the selected page within the ViewPager at any time with the getCurrentItem method which returns the current page: vpPager.getCurrentItem(); // --> 2 The current page can also be changed programmatically with the vpPager.setCurrentItem(2)

ViewPager with Fragments, ViewPager | Android Tutorial. Getting started with Android · 9-Patch Images · Accessing SQLite databases using the ViewPager is a Layout manager that allows the user to flip left and right Then add the ViewPager to your activity layout: in this code ‘R.id.viewpager’ is real id of your ViewPager. and ‘viewPager.getCurrentItem()’ method will return currently selected fragment in ViewPager. You can also provide specific position of fragment if you want to access only 1 fragment. for example:

ViewPager, no entries are displayed and an empty View Panel with view pager and column headers are simply displayed. Similarly, if the web user has no access to the  When you're using a ViewPager to manage fragments, you don't have direct access to the FragmentTransaction objects that are being used in the background. One consequence is that you can't just add your fragments to the app's backstack.

Comments
  • Use getActivity().getSupportFragmentManager().findFragmentByTag("YOUR TAG") or getActivity().getSupportFragmentManager().findFragmentById(R.id.YOURFRAGMENT)
  • Thanks this is what i was looking for!
  • this is will return null in api <17
  • java.lang.NullPointerException: Attempt to invoke virtual method Not Working