(ActionBar) Tabs + Pager + detail Fragments inside ViewPager container

Question

For ActionBarSherlock I would like to have (Action Bar) Tabs + Pager. I use Fragments inside that pager container. I already got the examples of http://actionbarsherlock.com/ working, but I can't manage to get a details fragment inside that pager container when I would click on let's say a listitem in the first fragment.

Is it impossible to have something like this:

Activity with Tabs and pager container

• Fragment A inside pager container under Tab1
  • Click on something in Fragment A and show Fragment B in same pager container under Tab1.

Fragment A is then not visible, only Fragment B is visible, but also all the Tabs.

At the moment I think only a new activity (which would hold Fragment B inside it) can be started after clicking something in Fragment A.

Answer 1

Here is my solution for the (Tabs + Fragment + ViewPager) it is works for me as i wanted, hope that works for you as well

here is the xml file

 <LinearLayout
        android:id="@+id/linearLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal" >

        <android.support.v4.view.ViewPager
            android:id="@+id/pager"
            android:layout_width="0dip"
            android:layout_height="match_parent"
            android:layout_weight="5" />

        <FrameLayout
            android:id="@+id/fragment_details"
            android:layout_width="0px"
            android:layout_height="match_parent"
            android:layout_weight="4.3" />
    </LinearLayout>

here is the code for MainActivity.java I'll post relevant code only so you'll have to manage it

public class MainActivity extends FragmentActivity implements
        DialogInterface.OnDismissListener, TabDataResponder {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        artistTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_artist);
        albumTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_album);
        songTab = getSupportActionBar().newTab().setText(
                R.string.tab_name_songs);

        map = new HashMap<String, Integer>();
        mViewPager = (ViewPager) findViewById(R.id.pager);
        FrameLayout deatil = (FrameLayout) findViewById(R.id.fragment_details);
        mDualPane = (deatil != null) && (deatil.getVisibility() == View.VISIBLE);
        mTabsAdapter = new TabsAdapter(this, getSupportActionBar(), mViewPager);

        if (savedInstanceState != null) {
            flag = true;
            index = savedInstanceState.getInt("index");
        }

        setUpTabView();

    }


    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt("index", getSupportActionBar()
                .getSelectedNavigationIndex());
    }

    private void setUpTabView() {
        mTabsAdapter.addTab(artistTab, ArtistFragment.class, null);
        mTabsAdapter.addTab(albumTab, AlbumFragment.class, null);
        mTabsAdapter.addTab(songTab, SongFragment.class, null);
        getSupportActionBar().setSelectedNavigationItem(index);
    }

    public static class TabsAdapter extends FragmentPagerAdapter implements
            ViewPager.OnPageChangeListener, ActionBar.TabListener {

        private FragmentActivity mContext;
        private ActionBar mActionBar;
        private final ViewPager mViewPager;

        private final ArrayList<String> mTabs = new ArrayList<String>();
        private TabDataResponder responder;

        public TabsAdapter(FragmentActivity activity, ActionBar actionBar,
                ViewPager pager) {

            super(activity.getSupportFragmentManager());
            mContext = activity;
            mActionBar = actionBar;
            mViewPager = pager;

            // TabDataResponder is an interface which is implemented in MainActivity
            // You can find implementation @ the last

            responder = (TabDataResponder) activity;
            mViewPager.setAdapter(this);
            mViewPager.setOnPageChangeListener(this);

            //I have used map to save state of the fragment
            map.put(SongFragment.TYPE_FRAGMENT.trim(), 0);
            map.put(AlbumFragment.TYPE_FRAGMENT.trim(), 0);
            map.put(ArtistFragment.TYPE_FRAGMENT.trim(), 0);
        }

        public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
            mTabs.add(clss.getName());
            // mArgs.add(args);
            mActionBar.addTab(tab.setTabListener(this));
            notifyDataSetChanged();
        }

        @Override
        public int getCount() {
            return mTabs.size();
        }

        @Override
        public Fragment getItem(int position) {
            return Fragment
                    .instantiate(mContext, mTabs.get(position), /*
                                                                 * mArgs.get(
                                                                 * position)
                                                                 */null);
        }

        @Override
        public void onPageScrolled(int position, float positionOffset,
                int positionOffsetPixels) {
        }

        @Override
        public void onPageSelected(int position) {
            Log.i(TAG, "PageSelected....");
            mActionBar.setSelectedNavigationItem(position);
        }

        @Override
        public void onPageScrollStateChanged(int state) {
            Log.i(TAG, "ScrollSateChanged....");
        }

        @Override
        public void onTabReselected(Tab tab, FragmentTransaction ft) {
        }

        @Override
        public void onTabSelected(Tab tab, FragmentTransaction ft) {
            mViewPager.setCurrentItem(tab.getPosition());
            String a = null;
            if (mDualPane) {
                a = mTabs.get(tab.getPosition());
                responder.loadData(a, map.get(a));
            }
        }

        @Override
        public void onTabUnselected(Tab tab, FragmentTransaction ft) {
            Log.i(TAG, "Tab is released now....");
        }
    }

    @Override
    public void onDismiss(DialogInterface dialog) {
        setUpTabView();

    }
//This interface must be call from fragment class 
//@ the time of event you want to show detail 
// pass the class name in the type argument using class.getName() method
    @Override
    public void loadData(String type, int index) {
        DetailFragment viewer = (DetailFragment) getSupportFragmentManager()
                .findFragmentById(R.id.fragment_details);
        if (mDualPane) {
            if (viewer == null || viewer.getShownIndex() != index
                    || viewer.getTypeFragment() != type) {

                DetailFragment df = DetailFragment.newInstance(index, type);
                getSupportFragmentManager()
                        .beginTransaction()
                        .replace(R.id.fragment_details, df)
                        .setTransition(
                                FragmentTransaction.TRANSIT_FRAGMENT_FADE)
                        .commit();
                map.put(type.trim(), index);

            }

        } else {
            Intent intent = new Intent();
            intent.setClass(MainActivity.this, DetailActivity.class);
            intent.putExtra("index", index);
            intent.putExtra("type", type);
            startActivity(intent);
        }
    }
}

and here is how i deal with detail fragment not very efficient but kind of working

public class DetailFragment extends Fragment{

    public static DetailFragment newInstance(int index, String  TYPE_FRAGMENT) {
        DetailFragment f = new DetailFragment();

        // Supply index input as an argument.
        Bundle args = new Bundle();
        args.putInt("index", index);
        args.putString("type", TYPE_FRAGMENT);
        f.setArguments(args);

        return f;
    }



    public int getShownIndex() {
        return getArguments().getInt("index", 0);
    }

    public String getTypeFragment(){
        String a = getArguments().getString("type");
        return a;
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        //template is blank layout
        View view =  inflater.inflate(R.layout.template, container, false);
        if(getTypeFragment().equals(ArtistFragment.TYPE_FRAGMENT)){
            view = null;
            view = inflater.inflate(R.layout.artist_details, container, false);
            //....

        }
        else if(getTypeFragment().equals(AlbumFragment.TYPE_FRAGMENT)){

            //do's for album fragment
        }
        else if(getTypeFragment().equals(SongFragment.TYPE_FRAGMENT)){
            //do's for song fragment
        }
        return view;
    }

}

do not save the state of tab in their individual fragment it will conflict, we are already doing it here