Android Fragment возвращается, не работает, setDisplayHomeAsUpEnabled (true) setHomeButtonEnabled (true);

Question

После того, как вы покажете представление ArticlesActivity, я не могу вернуться к mainActivity, нажав стрелку. Я добавил setDisplayHomeAsUpEnabled (истина) и setHomeButtonEnabled (истина)

манифеста:

... 
<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" /> 

<application 
    android:name=".MyApp" 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:supportsRtl="true" 
    android:theme="@style/AppTheme"> 
    <activity 
     android:name=".views.LoadingActivity" 
     android:configChanges="orientation|keyboardHidden|screenSize" 
     android:label="@string/app_name" 
     android:theme="@style/FullscreenTheme"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity 
     android:name=".views.MainActivity" 
     android:label="@string/title_activity_main" 
     android:theme="@style/AppTheme.NoActionBar" /> 
.... 

mainActivity

public class MainActivity extends AppCompatActivity { 
    static public DrawerLayout mDrawerLayout; 
    private ArrayList<ArrayList<Article>> articlesHomeList; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.activity_main); 
     Bundle bundle = getIntent().getExtras(); 
     articlesHomeList = (ArrayList<ArrayList<Article>>) bundle.getSerializable("articlesHomeList"); 
     Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
     toolbar.setTitle(R.string.app_name); 
     setSupportActionBar(toolbar); 


     // Setting ViewPager for each Tabs 
     ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager); 
     setupViewPager(viewPager); 
     // Set Tabs inside Toolbar 
     TabLayout tabs = (TabLayout) findViewById(R.id.tabs); 

     tabs.setupWithViewPager(viewPager); 
     .... 
    } 

    private void setupViewPager(ViewPager viewPager) { 
     Bundle bundleMyNews = new Bundle(); 
     bundleMyNews.putSerializable("articles", (Serializable) this.articlesHomeList.get(0)); 
     MyNewsFragment myNewsFragment = new MyNewsFragment(); 
     myNewsFragment.setArguments(bundleMyNews); 

     Bundle bundleMyThemes = new Bundle(); 
     bundleMyThemes.putSerializable("articles", (Serializable) this.articlesHomeList.get(1)); 
     MyThemesFragment myThemesFragment = new MyThemesFragment(); 
     myThemesFragment.setArguments(bundleMyThemes); 

     Bundle bundleAllNews = new Bundle(); 
     bundleAllNews.putSerializable("articles", (Serializable) this.articlesHomeList.get(2)); 
     AllNewsFragment allNewsFragment = new AllNewsFragment(); 
     allNewsFragment.setArguments(bundleAllNews); 

     AdapterTabs adapter = new AdapterTabs(getSupportFragmentManager()); 
     adapter.addFragment(myThemesFragment, "My Themes"); 
     adapter.addFragment(myNewsFragment, "My News"); 
     adapter.addFragment(allNewsFragment, "All News"); 

     viewPager.setAdapter(adapter); 
     viewPager.setCurrentItem(1); 
    }} 

MyNewsFragment.java

public class MyNewsFragment extends Fragment { 
    private List<Article> articlesList; 
    public ContentAdapter adapter; 
    private RecyclerView recyclerView; 
    private SwipeRefreshLayout refreshLayout; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View fragment = (View) inflater.inflate(R.layout.recycler_view, co 

    ntainer, false); 
     recyclerView = (RecyclerView) fragment.findViewById(R.id.my_recycler_view); 

     //((AppCompatActivity) getActivity()).getSupportActionBar().setTitle("----"); 

     /*View btnRefresh = container.findViewById(R.id.action_refresh); 
      btnRefresh.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       Log.d("--MyNewsFragment","btnSerach click"); 
      } 
     });*/ 

     articlesList = (List<Article>) this.getArguments().getSerializable("articles"); 

     ContentAdapter adapter = new ContentAdapter(articlesList); 
     recyclerView.setAdapter(adapter); 
     recyclerView.setHasFixedSize(true); 

     recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); 

     // Obtener el refreshLayout 
     refreshLayout = (SwipeRefreshLayout) fragment.findViewById(R.id.swipeRefresh); 

     // Seteamos los colores que se usarán a lo largo de la animación 
     refreshLayout.setColorSchemeResources(
       R.color.co_colorAccent 
     ); 

     // Iniciar la tarea asíncrona al revelar el indicador 
     refreshLayout.setOnRefreshListener(
      new SwipeRefreshLayout.OnRefreshListener() { 
       @Override 
       public void onRefresh() { 
        //new HackingBackgroundTask().execute(); 
        Log.d("--Refreshhh", "----"); 
       } 
      } 
     ); 

     return recyclerView; 

    } 

    @Override 
    public void onStart() { 
     super.onStart(); 
     Log.d("--MyNewsFragment", "Onstart"); 
     //this.loadArticles(); 
    } 

    private void loadArticles() { 
     AppController appController = new AppController(getActivity()); 
     SettingsAppController settingsAppController = new SettingsAppController(getActivity()); 
     Auth auth = settingsAppController.getAuth(); 
     try { 
      Log.d("------iniciandooo", "loadArticles"); 
      appController.getArticlesRequest(auth, new AppController.GetArticlesRequestCallback() { 
       @Override 
       public void getArticlesResponse(ApiResponse response) { 
        if (response.getSuccess()) { 
         articlesList = response.getArticlesList(); 
         Log.d("--MyThemesFragment", "Response get articles received"); 
         setAdapter(new ContentAdapter(articlesList)); 
        } else { 
         Log.e("--LoadingActivity", "Error " + response.getErrorCode() + ": " + response.getErrorMessage()); 
        } 
       } 
      }); 
     } catch (ErrorServerException e) { 
      Log.e("--ERRRRRRRRROR", e.getMessage().toString()); 
     } 
     ContentAdapter adapter = new ContentAdapter(articlesList); 
     recyclerView.setAdapter(adapter); 
     recyclerView.setHasFixedSize(true); 

     recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); 
    } 

    public ContentAdapter getAdapter() { 
     return adapter; 
    } 

    public void setAdapter(ContentAdapter adapter) { 
     this.adapter = adapter; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     Log.d("Item selected", "fragment"); 
     return super.onOptionsItemSelected(item); 
    } 

    public class ContentAdapter extends RecyclerView.Adapter<ViewHolder> { 
     private List<Article> articles; 

     public ContentAdapter(List<Article> articles) { 
      this.articles = articles; 
     } 

     @Override 
     public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
      return new ViewHolder(LayoutInflater.from(parent.getContext()), parent); 
     } 

     @Override 
     public void onBindViewHolder(ViewHolder holder, int position) { 
      try { 
       if (articles.get(position).getImagePath() != "") { 
         Picasso.with(holder.itemView.getContext()).load(articles.get(position).getImagePath()).error(R.drawable.placeholder_blue_sd).placeholder(R.drawable.placeholder_blue_sd).into(holder.image); 
       } else { 
         Picasso.with(holder.itemView.getContext()).load(R.drawable.placeholder_blue_sd).into(holder.image); 
       } 
      } catch (Exception e) { 
        Picasso.with(holder.itemView.getContext()).load(R.drawable.placeholder_blue_sd).into(holder.image); 
       Log.e("--ContentAdapter", "onBindViewHolder error image"); 
      } 
      holder.title.setText(articles.get(position).getTitle()); 
      holder.time.setText(articles.get(position).getTime()); 
       holder.domain.setText(articles.get(position).getSource().getDomain()); 
      holder.article = articles.get(position); 
      holder.position = position; 
     } 


     public void addArticles(List<Article> articles){ 
      //TODO 
      articles.addAll(articles); 
      notifyDataSetChanged(); 
     } 

     @Override 
     public int getItemCount() { 
      if (this.articles != null) 
       return this.articles.size(); 
      else { 
       return 0; 
      } 
     } 

     @Override 
     public long getItemId(int position) { 
      return articles.get(position).getId(); 
     } 

    } 

    public class ViewHolder extends RecyclerView.ViewHolder { 
     public ImageView image; 
     public TextView title; 
     public TextView time; 
     public TextView domain; 
     public Article article; 
     public Integer position; 

     public ViewHolder(LayoutInflater inflater, ViewGroup parent) { 
      super(inflater.inflate(R.layout.item_card, parent, false)); 
      image = (ImageView) itemView.findViewById(R.id.cardImage); 
      time = (TextView) itemView.findViewById(R.id.cardTime); 
      title = (TextView) itemView.findViewById(R.id.cardTitle); 
      domain = (TextView) itemView.findViewById(R.id.cardDomain); 

      itemView.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        Snackbar.make(v, "Title: " + article.getTitle(), 
           Snackbar.LENGTH_LONG).show(); 
        gotoArticleDetails(v.getContext(), article, position); 
       } 
      }); 
      title.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        Snackbar.make(v, "Title: " + article.getTitle(), 
           Snackbar.LENGTH_LONG).show(); 
         gotoArticleDetails(v.getContext(), article, position); 
        } 
       }); 
      } 

     public void gotoArticleDetails(Context context, Article article, Integer position) { 
      Log.d("--LoadingActivity", "gotoHomeActivity"); 
      Intent intent = new Intent(context, ArticlesActivity.class); 
      Bundle bundle = new Bundle(); 
      bundle.putSerializable("article", article); 
      bundle.putInt("position", position); 
      intent.putExtras(bundle); 
      startActivity(intent); 
     } 

    } 

} 

ArticlesActivity

public class ArticlesActivity extends AppCompatActivity { 
    Article article; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_articles); 
     //Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
     //setSupportActionBar(toolbar); 
     Bundle bundle = getIntent().getExtras(); 
     this.article = (Article) bundle.getSerializable("article"); 
     Integer position = (int) bundle.getInt("position"); 

     setSupportActionBar((Toolbar) findViewById(R.id.toolbar)); 
     getSupportActionBar().setDisplayHomeAsUpEnabled(true); 
     getSupportActionBar().setHomeButtonEnabled(true); 

     // Set Collapsing Toolbar layout to the screen 
     CollapsingToolbarLayout collapsingToolbar = 
       (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar); 
     // Set title of Detail page 
     collapsingToolbar.setTitle(article.getTitle()); 


     FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); 
     fab.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) 
         .setAction("Action", null).show(); 
      } 
     }); 


     ImageView image = (ImageView) findViewById(R.id.image); 
     try { 
      if (article.getImagePath() != "") { 
       Picasso.with(this).load(article.getImagePath()).error(R.drawable.placeholder_blue_sd).placeholder(R.drawable.placeholder_blue_sd).into(image); 
      } else { 
       Picasso.with(this).load(R.drawable.placeholder_blue_sd).into(image); 
      } 
     } catch (Exception e) { 
      Picasso.with(this).load(R.drawable.placeholder_blue_sd).into(image); 
      Log.e("--ArticlesActivity", "on create error image"); 
     } 

     TextView domain = (TextView) findViewById(R.id.articleDomain); 
     domain.setText(article.getSource().getDomain()); 
     TextView time = (TextView) findViewById(R.id.articleTime); 
     time.setText(article.getTime()); 

     TextView secondTitle = (TextView) findViewById(R.id.secondTitle); 
     secondTitle.setText(article.getTitle()); 

     TextView body = (TextView) findViewById(R.id.body); 
     body.setText(article.getBody()); 

     Button btnOpenWebView = (Button) findViewById(R.id.btnOpenWebView); 
     btnOpenWebView.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       Intent intent = new Intent(getApplicationContext(), WebViewActivity.class); 
       Bundle bundle = new Bundle(); 
       bundle.putSerializable("article", getArticle()); 
       intent.putExtras(bundle); 
       startActivity(intent); 
      } 
     }); 


    } 

    public Article getArticle() { 
     return article; 
    } 

    public void setArticle(Article article) { 
     this.article = article; 
    } 
} 

Answer 1

Вы должны проверить документацию:

http://developer.android.com/training/implementing-navigation/ancestral.html

Вам нужно обновить манифест

<activity 
    android:name=".views.ArticlesActivity" 
    android:label="@string/title_activity_main" 
    android:theme="@style/AppTheme.NoActionBar" 
    android:parentActivityName=".views.MainActivity" > 
    <!-- Parent activity meta-data to support 4.0 and lower --> 
    <meta-data 
     android:name="android.support.PARENT_ACTIVITY" 
     android:value=".views.MainActivity" /> 
</acivity> 

И переопределить onOptionsItemSelected в вашем ArticlesActivity

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    switch (item.getItemId()) { 
    // Respond to the action bar's Up/Home button 
    case android.R.id.home: 
     NavUtils.navigateUpFromSameTask(this); 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 
}