Android PagerView between actions

Question

I have five actions / screens that I would like to scroll between them, each of which has a different function, but are interconnected, therefore, the concept of the user interface for each of them.

I found a lot of discussion around ViewPager and PagerAdapters, etc., but cannot find where switches between different activity screens switch.

Is it possible? Can someone point me to an example project with source code? Or show me how to adapt an existing tutorial to do what I want?

Thank you, very good!

Answer 1

You cannot use ViewPager to scroll between Activities . You need to convert each of you five Activities into Fragments , and then combine everything into one FragmentActivity using the Adapter that you use with ViewPager .

Here's a link that details the conversion of current Activities information to Fragments .

This is a snippet of the topic on the Android developers website, it has a lot of useful information.

Here is another example (full source) that inflates TextViews on every page.

Here is an example that I typed:

Pageradapter

 public class PagerAdapter extends FragmentPagerAdapter { private final List<Fragment> mFragments = new ArrayList<Fragment>(); public PagerAdapter(FragmentManager manager) { super(manager); } public void addFragment(Fragment fragment) { mFragments.add(fragment); notifyDataSetChanged(); } @Override public int getCount() { return mFragments.size(); } @Override public Fragment getItem(int position) { return mFragments.get(position); } } 

This should be called in onCreate your FragmentActivity :

  private void initPaging() { FragmentOne fragmentOne = new FragmentOne(); FragmentTwo fragmentTwo= new FragmentTwo(); PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager()); pagerAdapter.addFragment(fragmentOne); pagerAdapter.addFragment(fragmentTwo); ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager); viewPager.setAdapter(pagerAdapter); } 

This is a sample layout that you use for your FragmnetActivity :

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <android.support.v4.view.ViewPager android:id="@+id/viewPager" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout> 

To create a Fragment , create a new class that extends Fragment . The first two methods you want to use override : onActivityCreated and onCreateView .

Here is how you could do it:

 public class FragmentOne extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(THE_LAYOUT_FROM_YOUR_ORIGINAL_ACTIVITY, container, false); return view; } } 

Answer 2

Fix for mPageradapter

  PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager()); pagerAdapter.addFragment(fragmentOne); pagerAdapter.addFragment(fragmentEvents); viewPager = (ViewPager) super.findViewById(R.id.pager); viewPager.setAdapter(pagerAdapter);