Java – How do I use ListFragment in Android sliding tabs?

I used this code earlier for a sliding tab with two layouts of View and it worked fine.

public class MainActivity extends FragmentActivity {
/**
 * The {@link android.support.v4.view.PagerAdapter} that will provide
 * fragments for each of the sections. We use a
 * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which
 * will keep every loaded fragment in memory. If this becomes too memory
 * intensive, it may be best to switch to a
 * {@link android.support.v4.app.FragmentStatePagerAdapter}.
 */
SectionsPagerAdapter mSectionsPagerAdapter;

/**
 * The {@link ViewPager} that will host the section contents.
 */
ViewPager mViewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

 Create the adapter that will return a fragment for each of the three
     primary sections of the app.
    mSectionsPagerAdapter = new SectionsPagerAdapter(
            getSupportFragmentManager());

 Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
     Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
 * one of the sections/tabs/pages.
 */
public class SectionsPagerAdapter extends FragmentPagerAdapter {

public SectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

@Override
    public Fragment getItem(int position) {
         getItem is called to instantiate the fragment for the given page.
         Return a DummySectionFragment (defined as a static inner class
         below) with the page number as its lone argument.
        Fragment fragment = new DummySectionFragment();
        Bundle args = new Bundle();
        args.putInt(DummySectionFragment.ARG_OBJECT, position);
        fragment.setArguments(args);
        return fragment;
    }

@Override
    public int getCount() {
         Show 2 total pages.
        return 2;
    }

@Override
    public CharSequence getPageTitle(int position) {
        Locale l = Locale.getDefault();
        switch (position) {
        case 0:
            return getString(R.string.title_section1).toUpperCase(l);
        case 1:
            return getString(R.string.title_section2).toUpperCase(l);
        }
        return null;
    }
}

/**
 * A dummy fragment representing a section of the app, but that simply
 * displays dummy text.
 */
public static class DummySectionFragment extends Fragment {
    /**
     * The fragment argument representing the section number for this
     * fragment.
     */
    public static final String ARG_SECTION_NUMBER = "section_number";
    public static final String ARG_OBJECT = "object";
    public DummySectionFragment() {
    }

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        Bundle args = getArguments();
        int position = args.getInt(ARG_OBJECT);

int tabLayout = 0;
        switch (position) {
        case 0:
        tabLayout = R.layout.tab_new;
        break;
        case 1:
        tabLayout = R.layout.tab_summary;
        break;

}

View rootView = inflater.inflate(tabLayout, container, false);

return rootView;
    }
}
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {

case R.id.action_settings:
        Intent i = new Intent(this, SettingsActivity.class);
        startActivity(i);
    }

return true;
}

To do this, I simply created 2 xml files and initialized them when the tabs are positioned correctly; However, now I want 2 tabs, but the second one has to be a list. I don’t know how to do it. I tried to extend the listFragment but crashed because I couldn’t find the resource. I’ve been stuck for a long time, can someone please help? I googled a lot and looked at all the examples, but none of them told me how to make a list in a tab and how to call it.

This is what I have now
Primary activity

public class MainActivity extends FragmentActivity {
SimpleListFragment x = new SimpleListFragment();
/**
 * The {@link android.support.v4.view.PagerAdapter} that will provide
 * fragments for each of the sections. We use a
 * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which
 * will keep every loaded fragment in memory. If this becomes too memory
 * intensive, it may be best to switch to a
 * {@link android.support.v4.app.FragmentStatePagerAdapter}.
 */
SectionsPagerAdapter mSectionsPagerAdapter;

/**
 * The {@link ViewPager} that will host the section contents.
 */
ViewPager mViewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

 Create the adapter that will return a fragment for each of the three
     primary sections of the app.
    mSectionsPagerAdapter = new SectionsPagerAdapter(
            getSupportFragmentManager());

 Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
     Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
 * one of the sections/tabs/pages.
 */
public class SectionsPagerAdapter extends FragmentPagerAdapter {

public SectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

@Override
    public Fragment getItem(int position) {
         getItem is called to instantiate the fragment for the given page.
         Return a DummySectionFragment (defined as a static inner class
         below) with the page number as its lone argument.
        Fragment fragment = new DummySectionFragment();
        Bundle args = new Bundle();
        args.putInt(DummySectionFragment.ARG_OBJECT, position + 1);
        fragment.setArguments(args);
        return fragment;
    }

@Override
    public int getCount() {
         Show 3 total pages.
        return 2;
    }

@Override
    public CharSequence getPageTitle(int position) {
        Locale l = Locale.getDefault();
        switch (position) {
        case 0:
            return getString(R.string.title_section1).toUpperCase(l);
        case 1:
            return getString(R.string.title_section2).toUpperCase(l);
        }
        return null;
    }
}

/**
 * A dummy fragment representing a section of the app, but that simply
 * displays dummy text.
 */
public static class DummySectionFragment extends Fragment {
    /**
     * The fragment argument representing the section number for this
     * fragment.
     */
    public static final String ARG_SECTION_NUMBER = "section_number";
    public static final String ARG_OBJECT = "object";
    public DummySectionFragment() {
    }

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        Bundle args = getArguments();
        int position = args.getInt(ARG_OBJECT);

int tabLayout = 0;
        switch (position) {
        case 0:
        tabLayout = R.layout.tab_home;
        break;
        case 1:
            SimpleListFragment simpleListFragment = new SimpleListFragment();

break;

}

View rootView = inflater.inflate(tabLayout, container, false);

return rootView;
    }
}

ATM You are creating your ListFragment in DummySectionFragment. This is not right.

Here’s one way. Not the best, but easy to understand.

Create fragments in the main activity and pass them to the adapter. DummyListFragment is a new class derived from ListFragment. The important thing here is that the XML layout it uses contains a ListView with the id @android:id/list. (So the fragment understands which ListView it must/can use.)

public class MainActivity extends FragmentActivity {

SectionsPagerAdapter mSectionsPagerAdapter;

ViewPager mViewPager;

List<Fragment> mFragments;

@Override protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

mFragments = new ArrayList<Fragment>();
 mFragments.add(new DummySectionFragment();
 mFragments.add(new DummyListFragment();

mSectionsPagerAdapter = new SectionsPagerAdapter(
        getSupportFragmentManager(), mFragments);

…

public class SectionsPagerAdapter extends FragmentPagerAdapter {

List<Fragment> fragmentList;

public SectionsPagerAdapter(FragmentManager fm, List<Fragment> fragments) {
        super(fm);
        fragmentList = fragments;
    }

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

@Override
    public Fragment getItem(int position) {
        Fragment fragment = fragmentList.get(position);        
        return fragment;
    }

. .

public static class DummyListFragment extends ListFragment {

public DummyListFragment() {
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    return inflater.inflate(R.layout.my_list_fragment, container, false);
}