Навигационный ящик всегда завышен

Question

Я пытался добавить 3 фиксированных вкладок и навигационный ящик ... Но когда я запускаю приложение, ящик навигации всегда открыт, и когда я нажимаю на элементы навигационного ящика, он заставляет приложение закрывать приложение со следующей ошибкой

java.lang.IllegalArgumentException: Нет вид ящика найден с гравитацией ЛЕВЫЙ

Mainactivity.java

public class MainActivity extends AppCompatActivity implements 
FragmentDrawer.FragmentDrawerListener { 

private static String TAG = MainActivity.class.getSimpleName(); 

private Toolbar mToolbar; 
private TabLayout tabLayout; 
private ViewPager viewPager; 
private FragmentDrawer drawerFragment; 

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

    mToolbar = (Toolbar) findViewById(R.id.toolbar); 

    setSupportActionBar(mToolbar); 
    //getSupportActionBar().setDisplayShowHomeEnabled(true); 
    getSupportActionBar().setDisplayHomeAsUpEnabled(true); 

    drawerFragment = (FragmentDrawer) 
      getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer); 
    drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar); 
    drawerFragment.setDrawerListener(this); 

    // display the first navigation drawer view on app launch 
    displayView(0); 

    viewPager = (ViewPager) findViewById(R.id.viewpager); 
    setupViewPager(viewPager); 

    tabLayout = (TabLayout) findViewById(R.id.tabs); 
    tabLayout.setupWithViewPager(viewPager); 
} 

private void setupViewPager(ViewPager viewPager){ 
    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager()); 
    adapter.addFragment(new HomeFragment(), "ONE"); 
    adapter.addFragment(new FriendsFragment(), "TWO"); 
    adapter.addFragment(new MessagesFragment(), "THREE"); 
    viewPager.setAdapter(adapter); 
} 


class ViewPagerAdapter extends FragmentPagerAdapter { 
    private final List<Fragment> mFragmentList = new ArrayList<>(); 
    private final List<String> mFragmentTitleList = new ArrayList<>(); 

    public ViewPagerAdapter(FragmentManager manager) { 
     super(manager); 
    } 

    @Override 
    public Fragment getItem(int position) { 
     return mFragmentList.get(position); 
    } 

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

    public void addFragment(Fragment fragment, String title) { 
     mFragmentList.add(fragment); 
     mFragmentTitleList.add(title); 
    } 

    @Override 
    public CharSequence getPageTitle(int position) { 
     return mFragmentTitleList.get(position); 
    } 
} 



@Override 
public void onDrawerItemSelected(View view, int position) { 
    displayView(position); 
} 

private void displayView(int position) { 
    Fragment fragment = null; 
    String title = getString(R.string.app_name); 
    switch (position) { 
     case 0: 
      fragment = new HomeFragment(); 
      title = getString(R.string.title_home); 
      break; 
     case 1: 
      fragment = new FriendsFragment(); 
      title = getString(R.string.title_friends); 
      break; 
     case 2: 
      fragment = new MessagesFragment(); 
      title = getString(R.string.title_messages); 
      break; 
     default: 
      break; 
    } 

    if (fragment != null) { 
     FragmentManager fragmentManager = getSupportFragmentManager(); 
     FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); 
     fragmentTransaction.replace(R.id.container_body, fragment); 
     fragmentTransaction.commit(); 

     // set the toolbar title 
     getSupportActionBar().setTitle(title); 
    } 
} 
} 

FragmentDrawer.java

public class FragmentDrawer extends android.support.v4.app.Fragment { 

private static String TAG = FragmentDrawer.class.getSimpleName(); 
private RecyclerView recyclerView; 
private ActionBarDrawerToggle mDrawerToggle; 
private DrawerLayout mDrawerLayout; 
private NavigationDrawerAdapter adapter; 
private View containerView; 
private static String[] titles = null; 
private FragmentDrawerListener drawerListener; 

public FragmentDrawer() { 

} 

public void setDrawerListener(FragmentDrawerListener listener) { 
    this.drawerListener = listener; 
} 

public static List<NavDrawerItem> getData() { 
    List<NavDrawerItem> data = new ArrayList<>(); 


    // preparing navigation drawer items 
    for (int i = 0; i < titles.length; i++) { 
     NavDrawerItem navItem = new NavDrawerItem(); 
     navItem.setTitle(titles[i]); 
     data.add(navItem); 
    } 
    return data; 
} 

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

    // drawer labels 
    titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels); 
} 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    // Inflating view layout 
    View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false); 
    recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList); 

    adapter = new NavigationDrawerAdapter(getActivity(), getData()); 
    recyclerView.setAdapter(adapter); 
    recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); 
    recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() { 
     @Override 
     public void onClick(View view, int position) { 
      drawerListener.onDrawerItemSelected(view, position); 
      mDrawerLayout.closeDrawer(containerView); 
     } 

     @Override 
     public void onLongClick(View view, int position) { 

     } 
    })); 

    return layout; 
} 


public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) { 
    containerView = getActivity().findViewById(fragmentId); 
    mDrawerLayout = drawerLayout; 
    mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) { 
     @Override 
     public void onDrawerOpened(View drawerView) { 
      super.onDrawerOpened(drawerView); 
      getActivity().invalidateOptionsMenu(); 
     } 

     @Override 
     public void onDrawerClosed(View drawerView) { 
      super.onDrawerClosed(drawerView); 
      getActivity().invalidateOptionsMenu(); 
     } 

     @Override 
     public void onDrawerSlide(View drawerView, float slideOffset) { 
      super.onDrawerSlide(drawerView, slideOffset); 
      toolbar.setAlpha(1 - slideOffset/2); 
     } 
    }; 

    mDrawerLayout.setDrawerListener(mDrawerToggle); 
    mDrawerLayout.post(new Runnable() { 
     @Override 
     public void run() { 
      mDrawerToggle.syncState(); 
     } 
    }); 

} 

public static interface ClickListener { 
    public void onClick(View view, int position); 

    public void onLongClick(View view, int position); 
} 

static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener { 

    private GestureDetector gestureDetector; 
    private ClickListener clickListener; 

    public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) { 
     this.clickListener = clickListener; 
     gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() { 
      @Override 
      public boolean onSingleTapUp(MotionEvent e) { 
       return true; 
      } 

      @Override 
      public void onLongPress(MotionEvent e) { 
       View child = recyclerView.findChildViewUnder(e.getX(), e.getY()); 
       if (child != null && clickListener != null) { 
        clickListener.onLongClick(child, recyclerView.getChildPosition(child)); 
       } 
      } 
     }); 
    } 

    @Override 
    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) { 

     View child = rv.findChildViewUnder(e.getX(), e.getY()); 
     if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) { 
      clickListener.onClick(child, rv.getChildPosition(child)); 
     } 
     return false; 
    } 

    @Override 
    public void onTouchEvent(RecyclerView rv, MotionEvent e) { 
    } 

    @Override 
    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { 

    } 


} 

public interface FragmentDrawerListener { 
    public void onDrawerItemSelected(View view, int position); 
} 
} 

activity_main.xml

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:id="@+id/drawer_layout" 
android:layout_width="match_parent" 
android:layout_height="match_parent"> 

<android.support.design.widget.CoordinatorLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 
    <LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical"> 

    <LinearLayout 
     android:id="@+id/container_toolbar" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical"> 


     <android.support.design.widget.AppBarLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"> 
     <include 
      android:id="@+id/toolbar" 
      layout="@layout/toolbar" /> 
      <android.support.design.widget.TabLayout 
       android:id="@+id/tabs" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       app:tabMode="fixed" 
       app:tabGravity="fill"/> 

     </android.support.design.widget.AppBarLayout> 

    </LinearLayout> 

    <FrameLayout 
     android:id="@+id/container_body" 
     android:layout_width="fill_parent" 
     android:layout_height="0dp" 
     android:layout_weight="1" /> 

     <android.support.v4.view.ViewPager 
      android:id="@+id/viewpager" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      app:layout_behavior="@string/appbar_scrolling_view_behavior" /> 


</LinearLayout> 


<fragment 
    android:id="@+id/fragment_navigation_drawer" 
    android:name="com.coastallabs.chat.devchat.activity.FragmentDrawer" 
    android:layout_width="@dimen/nav_drawer_width" 
    android:layout_height="match_parent" 
    android:layout_gravity="start" 
    app:layout="@layout/fragment_navigation_drawer" 
    tools:layout="@layout/fragment_navigation_drawer" /> 

Answer 1

У вас есть container_bodyFrameLayout настроен занять оставшуюся вертикальное пространство в макете (layout_height="0dp" , layout_weight="1"), но ViewPager имеет layout_height, установленный на match_parent, поэтому он занимает все пространство и сжимает FrameLayout до 0 высоты.

Что касается проблемы с изменением Fragment, у вас есть два разных метода обработки Fragment s в вашем коде. Поскольку вы используете ViewPager, вам не нужно иметь дело с FragmentTransaction s. Изменение метода displayView() в MainActivity следующим образом:

private void displayView(int position) { 
    String title = getString(R.string.app_name); 
    switch (position) { 
     case 0: 
      title = getString(R.string.title_home); 
      break; 
     case 1: 
      title = getString(R.string.title_friends); 
      break; 
     case 2: 
      title = getString(R.string.title_messages); 
      break; 
     default: 
      break; 
    } 
    getSupportActionBar().setTitle(title); 

    viewPager.setCurrentItem(position); 
} 

Вы также можете удалить container_bodyFrameLayout из вашего макета XML.