Настроить NavigationDrawer с RelativeLayout?

Question

Я хочу, чтобы снимок был поверх моего NavigationDrawer и ниже ListView, который содержит элементы навигации. Поэтому я установил LinearLayout для NavigationDrawer, который содержит ImageView и ListView. К сожалению, это не работает, и я получаю сообщение об ошибке:

10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime: FATAL EXCEPTION: main 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.pymdev.pym_app/com.example.pymdev.pym_app.MenuActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2114) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2139) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread.access$700(ActivityThread.java:143) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.os.Handler.dispatchMessage(Handler.java:99) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.os.Looper.loop(Looper.java:137) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread.main(ActivityThread.java:4960) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at java.lang.reflect.Method.invokeNative(Native Method) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Method.java:511) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at dalvik.system.NativeStart.main(Native Method) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime: Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.view.ViewGroup.addViewInner(ViewGroup.java:3439) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.view.ViewGroup.addView(ViewGroup.java:3310) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.support.v4.widget.DrawerLayout.addView(DrawerLayout.java:1730) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.view.ViewGroup.addView(ViewGroup.java:3286) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.view.LayoutInflater.rInflate(LayoutInflater.java:761) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.view.LayoutInflater.inflate(LayoutInflater.java:495) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:255) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at com.example.pymdev.pym_app.MenuActivity.onCreate(MenuActivity.java:51) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.Activity.performCreate(Activity.java:5203) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2078) 
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2139)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread.access$700(ActivityThread.java:143)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.os.Handler.dispatchMessage(Handler.java:99)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.os.Looper.loop(Looper.java:137)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at android.app.ActivityThread.main(ActivityThread.java:4960)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at java.lang.reflect.Method.invokeNative(Native Method)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Method.java:511)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)  
10-22 16:39:00.609 6555-6555/com.example.pymdev.pym_app E/AndroidRuntime:  at dalvik.system.NativeStart.main(Native Method)  

Мой fragment_navigation_drawer.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    tools:context="com.example.pymdev.pym_app.NavigationDrawerFragment" 
    android:id="@+id/navDrawerLinearLayout" 
    android:orientation="horizontal" android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    > 
    <ImageView 
     android:id="@+id/navDrawerImageView" 
     android:layout_width="match_parent" 
     android:layout_height="50dp" 
     android:src="@drawable/pym_cooler_drawer"/> 
    <ListView xmlns:android="http://schemas.android.com/apk/res/android" 
     xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" 
     android:id="@+id/navDrawerListView" 
     android:layout_height="match_parent" android:choiceMode="singleChoice" 
     android:divider="@color/dark_divider" android:dividerHeight="1dp" 
     android:background="@android:color/black" 
     android:listSelector="@drawable/drawer_selection" 
     tools:context="com.example.pymdev.pym_app.NavigationDrawerFragment" /> 
</LinearLayout> 

Мой activity_menu.xml:

<!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. --> 
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/drawer_layout" 
    android:layout_width="match_parent" android:layout_height="match_parent" 
    tools:context="com.example.pymdev.pym_app.MenuActivity"> 

    <!-- As the main content view, the view below consumes the entire 
     space available using match_parent in both dimensions. --> 
    <FrameLayout android:id="@+id/container" android:layout_width="match_parent" 
     android:layout_height="match_parent" /> 

    <!-- android:layout_gravity="start" tells DrawerLayout to treat 
     this as a sliding drawer on the left side for left-to-right 
     languages and on the right side for right-to-left languages. 
     If you're not building against API 17 or higher, use 
     android:layout_gravity="left" instead. --> 
    <!-- The drawer is given a fixed width in dp and extends the full height of 
     the container. --> 
    <fragment android:id="@+id/navigation_drawer" 
     android:layout_width="@dimen/navigation_drawer_width" android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:name="com.example.pymdev.pym_app.NavigationDrawerFragment" 
     tools:layout="@layout/fragment_navigation_drawer" /> 
</android.support.v4.widget.DrawerLayout> 

NavigationDrawerFragment класс:

public class NavigationDrawerFragment extends Fragment { 

    /** 
    * Remember the position of the selected item. 
    */ 
    private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position"; 

    /** 
    * Per the design guidelines, you should show the drawer on launch until the user manually 
    * expands it. This shared preference tracks this. 
    */ 
    private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned"; 

    /** 
    * A pointer to the current callbacks instance (the Activity). 
    */ 
    private NavigationDrawerCallbacks mCallbacks; 

    /** 
    * Helper component that ties the action bar to the navigation drawer. 
    */ 
    private ActionBarDrawerToggle mDrawerToggle; 

    private DrawerLayout mDrawerLayout; 
    private ListView mDrawerListView; 
    /* For top pic we need a linear layout wrapper */ 

    private LinearLayout mDrawerLinearLayout; 

    private View mFragmentContainerView; 

    private int mCurrentSelectedPosition = 0; 
    private boolean mFromSavedInstanceState; 
    private boolean mUserLearnedDrawer; 

    public NavigationDrawerFragment() { 
    } 

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

     // Read in the flag indicating whether or not the user has demonstrated awareness of the 
     // drawer. See PREF_USER_LEARNED_DRAWER for details. 
     SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity()); 
     mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false); 

     if (savedInstanceState != null) { 
      mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION); 
      mFromSavedInstanceState = true; 
     } 

     // Select either the default item (0) or the last selected item. 
     selectItem(mCurrentSelectedPosition); 
    } 

    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 
     // Indicate that this fragment would like to influence the set of actions in the action bar. 
     setHasOptionsMenu(true); 
    } 


    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     /* Inflate the whole Linear Layout for the drawer */ 
     mDrawerLinearLayout = (LinearLayout) inflater.inflate(
       R.layout.fragment_navigation_drawer, container, false); 
     /* Find the encapsulated listView */ 
     mDrawerListView = (ListView) mDrawerLinearLayout.findViewById(R.id.navDrawerListView); 
     /* 
     mDrawerListView = (ListView) inflater.inflate(
       R.layout.fragment_navigation_drawer, container, false); 
     */ 

     mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
       selectItem(position); 
      } 
     }); 


     //Use Custom Adapter instead: 
     mDrawerListView.setAdapter(new CustomNavAdapter(
       NavigationDrawerFragment.this.getActivity(), 
       getResources().getStringArray(R.array.section_titles), 
       new Integer[]{ 
         R.mipmap.ic_launcher, 
         R.mipmap.ic_launcher, 
         R.mipmap.ic_launcher, 
         R.mipmap.ic_launcher, 
         R.mipmap.ic_launcher, 
         R.mipmap.ic_launcher, 
       })); 

     mDrawerListView.setItemChecked(mCurrentSelectedPosition, true); 
     return mDrawerListView; 
    } 

    /* Custom array adapter tu support Images and Pictures combined */ 
    public class CustomNavAdapter extends ArrayAdapter<String> { 
     private final Activity _context; 
     private final String[] _text; 
     private final Integer[] _imageId; 

     public CustomNavAdapter(Activity context, String[] text, Integer[] imageId) { 
      super(context, R.layout.navigation_drawer_textview, text); 
      this._context = context; 
      this._text = text; 
      this._imageId = imageId; 
     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 

      LayoutInflater inflater = _context.getLayoutInflater(); 
      View rowView = inflater.inflate(R.layout.navigation_drawer_textview, null, true); 
      TextView txtTitle = (TextView) rowView.findViewById(R.id.text); 
      ImageView imageView = (ImageView) rowView.findViewById(R.id.icon); 
      txtTitle.setText(_text[position]); 
      imageView.setImageResource(_imageId[position]); 

      SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity()); 
      int selectedPosition = sharedPreferences.getInt("SELECTED_POSITION_KEY", -1); 
      /* 
      if (selectedPosition == position) { 
       reviewImageView.setImageResource(yourSelectedImageResource); 
      } 
      */ 
      return rowView; 
     } 



    } 

    public boolean isDrawerOpen() { 
     return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView); 
    } 

    /** 
    * Users of this fragment must call this method to set up the navigation drawer interactions. 
    * 
    * @param fragmentId The android:id of this fragment in its activity's layout. 
    * @param drawerLayout The DrawerLayout containing this fragment's UI. 
    */ 
    public void setUp(int fragmentId, DrawerLayout drawerLayout) { 
     mFragmentContainerView = getActivity().findViewById(fragmentId); 
     mDrawerLayout = drawerLayout; 

     // set a custom shadow that overlays the main content when the drawer opens 
     mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START); 
     // set up the drawer's list view with items and click listener 

     ActionBar actionBar = getActionBar(); 
     actionBar.setDisplayHomeAsUpEnabled(true); 
     actionBar.setHomeButtonEnabled(true); 

     // ActionBarDrawerToggle ties together the the proper interactions 
     // between the navigation drawer and the action bar app icon. 
     mDrawerToggle = new ActionBarDrawerToggle(
       getActivity(),     /* host Activity */ 
       mDrawerLayout,     /* DrawerLayout object */ 
       R.string.navigation_drawer_open, /* "open drawer" description for accessibility */ 
       R.string.navigation_drawer_close /* "close drawer" description for accessibility */ 
     ) { 
      @Override 
      public void onDrawerClosed(View drawerView) { 
       super.onDrawerClosed(drawerView); 
       if (!isAdded()) { 
        return; 
       } 

       getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu() 
      } 

      @Override 
      public void onDrawerOpened(View drawerView) { 
       super.onDrawerOpened(drawerView); 
       if (!isAdded()) { 
        return; 
       } 

       if (!mUserLearnedDrawer) { 
        // The user manually opened the drawer; store this flag to prevent auto-showing 
        // the navigation drawer automatically in the future. 
        mUserLearnedDrawer = true; 
        SharedPreferences sp = PreferenceManager 
          .getDefaultSharedPreferences(getActivity()); 
        sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply(); 
       } 

       getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu() 
      } 
     }; 

     // If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer, 
     // per the navigation drawer design guidelines. 
     if (!mUserLearnedDrawer && !mFromSavedInstanceState) { 
      mDrawerLayout.openDrawer(mFragmentContainerView); 
     } 

     // Defer code dependent on restoration of previous instance state. 
     mDrawerLayout.post(new Runnable() { 
      @Override 
      public void run() { 
       mDrawerToggle.syncState(); 
      } 
     }); 

     mDrawerLayout.setDrawerListener(mDrawerToggle); 
    } 

    private void selectItem(int position) { 
     mCurrentSelectedPosition = position; 
     if (mDrawerListView != null) { 
      mDrawerListView.setItemChecked(position, true); 
     } 
     if (mDrawerLayout != null) { 
      mDrawerLayout.closeDrawer(mFragmentContainerView); 
     } 
     if (mCallbacks != null) { 
      mCallbacks.onNavigationDrawerItemSelected(position); 
     } 
    } 

    @Override 
    public void onAttach(Activity activity) { 
     super.onAttach(activity); 
     try { 
      mCallbacks = (NavigationDrawerCallbacks) activity; 
     } catch (ClassCastException e) { 
      throw new ClassCastException("Activity must implement NavigationDrawerCallbacks."); 
     } 
    } 

    @Override 
    public void onDetach() { 
     super.onDetach(); 
     mCallbacks = null; 
    } 

    @Override 
    public void onSaveInstanceState(Bundle outState) { 
     super.onSaveInstanceState(outState); 
     outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition); 
    } 

    @Override 
    public void onConfigurationChanged(Configuration newConfig) { 
     super.onConfigurationChanged(newConfig); 
     // Forward the new configuration the drawer toggle component. 
     mDrawerToggle.onConfigurationChanged(newConfig); 
    } 

    @Override 
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 
     // If the drawer is open, show the global app actions in the action bar. See also 
     // showGlobalContextActionBar, which controls the top-left area of the action bar. 
     if (mDrawerLayout != null && isDrawerOpen()) { 
      inflater.inflate(R.menu.global, menu); 
      showGlobalContextActionBar(); 
     } 
     super.onCreateOptionsMenu(menu, inflater); 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     if (mDrawerToggle.onOptionsItemSelected(item)) { 
      return true; 
     } 

     if (item.getItemId() == R.id.action_logout) { 
      /* Logout from facebook */ 
      LoginManager.getInstance().logOut(); 
      /* Switch back to login screen */ 
      Intent intent = new Intent(getActivity(), LoginActivity.class); 
      startActivity(intent); 


      Toast.makeText(getActivity(), "Logout!", Toast.LENGTH_SHORT).show(); 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 

    /** 
    * Per the navigation drawer design guidelines, updates the action bar to show the global app 
    * 'context', rather than just what's in the current screen. 
    */ 
    private void showGlobalContextActionBar() { 
     ActionBar actionBar = getActionBar(); 
     actionBar.setDisplayShowTitleEnabled(true); 
     actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); 
     actionBar.setTitle(R.string.app_name); 
    } 

    private ActionBar getActionBar() { 
     return ((AppCompatActivity) getActivity()).getSupportActionBar(); 
    } 

    /** 
    * Callbacks interface that all activities using this fragment must implement. 
    */ 
    public static interface NavigationDrawerCallbacks { 
     /** 
     * Called when an item in the navigation drawer is selected. 
     */ 
     void onNavigationDrawerItemSelected(int position); 
    } 
} 

Не могли бы вы помочь? Большое спасибо.

Answer 1

Полностью выстрел в темноте, здесь, потому что есть много кода Java, который мне не нравится, но похоже, что ваш фрагмент xml неправильно сконфигурирован. Возможно, вы начали с ListView, а затем завернули его в LinearLayout? Попробуйте это вместо этого.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    tools:context="com.example.pymdev.pym_app.NavigationDrawerFragment" 
    android:id="@+id/navDrawerLinearLayout" 
    android:orientation="horizontal" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    > 
    <ImageView 
     android:id="@+id/navDrawerImageView" 
     android:layout_width="match_parent" 
     android:layout_height="50dp" 
     android:src="@drawable/pym_cooler_drawer"/> 

    <ListView 
     android:layout_width="match_parent" 
     android:id="@+id/navDrawerListView" 
     android:layout_height="match_parent" 
     android:choiceMode="singleChoice" 
     android:divider="@color/dark_divider" 
     android:dividerHeight="1dp" 
     android:background="@android:color/black" 
     android:listSelector="@drawable/drawer_selection" /> 
</LinearLayout> 

Answer 2

Привет на самом деле я получил это работает очень хорошо с помощью этого урока:

https://guides.codepath.com/android/Fragment-Navigation-Drawer

Я последовал за все точно, и теперь я также имеют гораздо чище структуру проекта.