android-viewpager

Display fragment viewpager within a fragment

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use AsyncTask to set the adapter for viewPager. It works for me. The asyncTask is to make the original fragment complete it’s transition. and then we proceed with viewPager fragments, basically to avoid recursion. @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { mView = inflater.inflate(R.layout.team_card_master, container, false); mViewPager = (ViewPager)mView.findViewById(R.id.team_card_master_view_pager); final Button button … Read more

Android Viewpager as Image Slide Gallery

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In Jake’s ViewPageIndicator he has implemented View pager to display a String array (i.e. [“this”,”is”,”a”,”text”]) which you pass from YourAdapter.java (that extends FragmentPagerAdapter) to the YourFragment.java which returns a View to the viewpager. In order to display something different, you simply have to change the context type your passing. In this case you want to … Read more

How do you create an Android View Pager with a dots indicator?

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All we need are: ViewPager, TabLayout and 2 drawables for selected and default dots. Firstly, we have to add TabLayout to our screen layout, and connect it with ViewPager. We can do this in two ways: Nested TabLayout in ViewPager <androidx.viewpager.widget.ViewPager android:id=”@+id/photos_viewpager” android:layout_width=”match_parent” android:layout_height=”match_parent”> <com.google.android.material.tabs.TabLayout android:layout_width=”match_parent” android:layout_height=”wrap_content”/> </androidx.viewpager.widget.ViewPager> In this case TabLayout will be automatically … Read more

Update Fragment from ViewPager

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Update Fragment from ViewPager You need to implement getItemPosition(Object obj) method. This method is called when you call notifyDataSetChanged() on your ViewPagerAdaper. Implicitly this method returns POSITION_UNCHANGED value that means something like this: “Fragment is where it should be so don’t change anything.” So if you need to update Fragment you can do it with: … Read more

How to add a Fragment inside a ViewPager using Nested Fragment (Android 4.2)

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Assuming you have created the correct xml layouts. It is now very simple to display fragments in a ViewPager that is hosted by another Fragment. The following is a parent fragment that displays child fragments: class ParentViewPagerFragment : Fragment() { override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? { val root = inflater.inflate(R.layout.fragment_parent_viewpager, container, … Read more

Is it possible to disable scrolling on a ViewPager

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A simple solution is to create your own subclass of ViewPager that has a private boolean flag, isPagingEnabled. Then override the onTouchEvent and onInterceptTouchEvent methods. If isPagingEnabled equals true invoke the super method, otherwise return. public class CustomViewPager extends ViewPager { private boolean isPagingEnabled = true; public CustomViewPager(Context context) { super(context); } public CustomViewPager(Context context, … Read more

Changing ViewPager to enable infinite page scrolling

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I solved this problem very simply using a little hack in the adapter. Here is my code: public class MyPagerAdapter extends FragmentStatePagerAdapter { public static int LOOPS_COUNT = 1000; private ArrayList<Product> mProducts; public MyPagerAdapter(FragmentManager manager, ArrayList<Product> products) { super(manager); mProducts = products; } @Override public Fragment getItem(int position) { if (mProducts != null && mProducts.size() … Read more

Why `PagerAdapter::notifyDataSetChanged` is not updating the View?

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There are several ways to achieve this. The first option is easier, but bit more inefficient. Override getItemPosition in your PagerAdapter like this: public int getItemPosition(Object object) { return POSITION_NONE; } This way, when you call notifyDataSetChanged(), the view pager will remove all views and reload them all. As so the reload effect is obtained. … Read more

ViewPager as a circular queue / wrapping

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I’ve implemented a ViewPager/PagerAdapter that can allow for pseudo-infinite paging behaviour. It works by specifying a very large number as the actual count, but maps them to the actual range of the dataset/pageset. It offsets the beginning by a large number also so that you can immediately scroll to the left from the ‘first’ page. … Read more

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