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POActionBarSherlock, ViewPager, TabsAdapter nested Tab Fragments
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copied!<p>I implemented a ActionBarSherlock with a ViewPager and a TabsAdapter. It works well but now I tried to "push" from a Framework Loaded in "Tab 1" another Fragment.</p> <p>The behavior should be like:</p> <ul> <li>I've 3 Tabs in my Application, When launching I see the first Tab where a Fragment with a Button is in it</li> <li>Pressing the Button on the First Tab, the Fragment on the First Tab should be replaced and another Fragment should be displayed</li> </ul> <p>I tried to implement this, but I've a black Fragment when Replacing.</p> <p>The Code:</p> <p><strong>FragmentDemoActivity.java</strong></p> <pre><code>public class FragmentDemoActivity extends SherlockFragmentActivity { CustomViewPager mViewPager; TabsAdapter mTabsAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ActionBar bar = getSupportActionBar(); bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE); mViewPager = (CustomViewPager)findViewById(R.id.pager); mViewPager.setSwipingEnabled(false); mTabsAdapter = new TabsAdapter(this, bar, mViewPager); mTabsAdapter.addTab(bar.newTab().setText("tab1"), FragmentA.class, null); mTabsAdapter.addTab(bar.newTab().setText("tab2"), FragmentB.class, null); setTitle(R.string.app_name); if (savedInstanceState != null) { bar.setSelectedNavigationItem(savedInstanceState.getInt("tab")); } } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt("tab", getSupportActionBar().getSelectedNavigationIndex()); } public static class TabsAdapter extends FragmentPagerAdapter implements ViewPager.OnPageChangeListener, ActionBar.TabListener { private final Context mContext; private final ActionBar mBar; private final ViewPager mViewPager; private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>(); static final class TabInfo { private final Class<?> clss; private final Bundle args; TabInfo(Class<?> _class, Bundle _args) { clss = _class; args = _args; } } public TabsAdapter(FragmentActivity activity, ActionBar bar, ViewPager pager) { super(activity.getSupportFragmentManager()); mContext = activity; mBar = bar; mViewPager = pager; mViewPager.setAdapter(this); mViewPager.setOnPageChangeListener(this); } public void addTab(ActionBar.Tab tab, Class<? extends Fragment> clss, Bundle args) { TabInfo info = new TabInfo(clss, args); tab.setTag(info); tab.setTabListener(this); mTabs.add(info); mBar.addTab(tab); notifyDataSetChanged(); } @Override public int getCount() { return mTabs.size(); } @Override public Fragment getItem(int position) { TabInfo info = mTabs.get(position); return Fragment.instantiate(mContext, info.clss.getName(), info.args); } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { mBar.setSelectedNavigationItem(position); } @Override public void onPageScrollStateChanged(int state) { } @Override public void onTabSelected(Tab tab, FragmentTransaction ft) { Object tag = tab.getTag(); for (int i=0; i<mTabs.size(); i++) { if (mTabs.get(i) == tag) { mViewPager.setCurrentItem(i,false); } } } @Override public void onTabUnselected(Tab tab, FragmentTransaction ft) { } @Override public void onTabReselected(Tab tab, FragmentTransaction ft) { } } } </code></pre> <p><strong>FragmentA.java</strong></p> <pre><code>public class FragmentA extends Fragment { Button button; int num; @Override public View onCreateView(LayoutInflater inflater, ViewGroup group, Bundle saved) { return inflater.inflate(R.layout.frag_a, group, false); } @Override public void onActivityCreated (Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); num = 0; button = (Button) getActivity().findViewById(R.id.button1); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { FragmentB f1 = new FragmentB(); FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction(); ft.replace(R.id.pager, f1,"newTag"); ft.show(f1); ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN); ft.addToBackStack(null); ft.commit(); } }); } } </code></pre> <p>I'm new at Android Development, so I'd be happy if someone is able to help me. I already investigated a lot of time to search a solution but the result wasn't as I expected.</p> <p>My current project: <a href="http://cl.ly/3q1f2t1O2Y3j" rel="noreferrer">http://cl.ly/3q1f2t1O2Y3j</a></p>

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