When navigating on Fragment screens and returning, the screen turns white

Question

have in Mainactivity 3(three) Fragments (Homefragment, Channelfragment and Searchfragment), with change made through tabs with click only. Inside the Homefragment I have 2 (two) more Fragments (Videosfragment and Playlistfragment), this with change in click and tbm with a pager view.

It worked, but a problem arose after I added these last two Ragments. Because when I go to the Searchfragment screen, it’s cool, but when I go back to the start screen, the Homefragment, this appears tabs, but it turns all white, the content of Videofragment and Playlistfragment turns all white.

I get to see the logs, making requests, but simply does not appear the content.

I have tried to re-create on onCreate, etc without success.

Follows the methods for better understanding (Mainactivity):

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

    init();
    if(savedInstanceState != null) {
        tabHost.setCurrentTabByTag(savedInstanceState.getString("tab"));
    }
}

public void init() {
    initializeTabHost();
    initializeViewPager();
    hideShowKeyboards(false);
}

private void initializeViewPager() {
    List<Fragment> fragments = new ArrayList<>();
    HomeFragment homeFragment = new HomeFragment();
    fragments.add(homeFragment);
    ChannelsListFragment channelsListFragment = new ChannelsListFragment();
    fragments.add(channelsListFragment);
    SearchFragment searchFragment = new SearchFragment() {
    fragments.add(searchFragment);

    FragmentAdapter fragmentAdapter = new FragmentAdapter(getSupportFragmentManager(), fragments);
    viewPagerCustom = (ViewPagerCustom) super.findViewById(R.id.main_viewPagerCustom);
    viewPagerCustom.setAdapter(fragmentAdapter);
    viewPagerCustom.addOnPageChangeListener(new PagerChangerListener());
}

 public void initializeTabHost() {
    tabHost = (TabHost) findViewById(android.R.id.tabhost);
    tabHost.setup();

    icHome = new ImageView(this);
    icHome.setImageResource(R.mipmap.ic_home_clicked);
    icChannel = new ImageView(this);
    icChannel.setImageResource(R.mipmap.ic_channel);
    icSearch = new ImageView(this);
    icSearch.setImageResource(R.mipmap.ic_search);

    addTab(this, this.tabHost, this.tabHost.newTabSpec("Tab 1").setIndicator(icHome));
    addTab(this, this.tabHost, this.tabHost.newTabSpec("Tab 2").setIndicator(icChannel));
    addTab(this, this.tabHost, this.tabHost.newTabSpec("Tab 3").setIndicator(icSearch));
    tabHost.setOnTabChangedListener(new TabHostChangeListener());
}

Methods of Homefragment:

public HomeFragment() {

}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    if(container == null)
        return null;

    rootView = inflater.inflate(R.layout.fragment_home, container, false);

    init();
    Log.i("Ciclo", "onCreateView() sendo chamado HomeFragment");

    return rootView;
}

private void init() {
    initTabHost();
    initializeVariables();
    initializeViewPager();
}

private void initTabHost() {
    fragmentTabHost = (FragmentTabHost)rootView.findViewById(android.R.id.tabhost);
    fragmentTabHost.setup(getActivity(), getChildFragmentManager(), R.id.realtabcontent);

    fragmentTabHost.addTab(fragmentTabHost.newTabSpec("tab 1").setIndicator("VÍDEOS"),
            VideosFragment.class, null);
    fragmentTabHost.addTab(fragmentTabHost.newTabSpec("tab 2").setIndicator("PLAYLISTS"),
            PlaylistFragment.class, null);

    fragmentTabHost.setOnTabChangedListener(new OnTabChangeListener());

    fragmentTabHost.getTabWidget().setBackgroundResource(R.color.icomptv_blue);
    //fillColor();
    fillColorLine();

    //Personaliza texto tabHost
    for (int i = 0; i < fragmentTabHost.getTabWidget().getChildCount(); i++) {
        TextView tv = (TextView) fragmentTabHost.getTabWidget().getChildAt(i).findViewById(android.R.id.title);
        tv.setTextColor(Color.parseColor("#FFFFFF"));
        tv.setTextSize(15);
    }
}

private void initializeViewPager() {
    List<Fragment> fragments = new ArrayList<>();

    VideosFragment videosFragment = new VideosFragment();
    fragments.add(videosFragment);
    PlaylistFragment playlistFragment = new PlaylistFragment();
    fragments.add(playlistFragment);

    ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(getFragmentManager(), fragments);
    viewPager = (ViewPager) rootView.findViewById(R.id.main_viewPager);
    viewPager.setAdapter(viewPagerAdapter);
    viewPager.addOnPageChangeListener(new PagerChangerListener());
}

Oncreate from Videofragment:

 @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    if (container == null)
        return null;

    Log.i("Ciclo", "onCreateView() do VideoFragment");
    view = inflater.inflate(R.layout.fragment_videos, container, false);

    initMethods();

    return view;
}

Good guys, who can tell me why this mistake? and propose a solution thank you

Answer 1

Use:

 FragmentAdapter fragmentAdapter = new FragmentAdapter(getChildFragmentManager() , fragments);

Source:

here