如何添加布局到导航抽屉？

Question

我从Android Studio创建了一个导航抽屉项目。现在我想添加一个线性布局到我的导航抽屉中。所以我增加了它。但这样表示

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.arul.anatotion/com.arul.anatotion.Navigation}: android.view.InflateException: Binary XML file line #28: Error inflating class fragment 
      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) 
      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
      at android.app.ActivityThread.access$800(ActivityThread.java:135) 
      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
      at android.os.Handler.dispatchMessage(Handler.java:102) 
      at android.os.Looper.loop(Looper.java:136) 
      at android.app.ActivityThread.main(ActivityThread.java:5017) 
      at java.lang.reflect.Method.invokeNative(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:515) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
      at dalvik.system.NativeStart.main(Native Method) 
    Caused by: android.view.InflateException: Binary XML file line #28: Error inflating class fragment 
      at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713) 
      at android.view.LayoutInflater.rInflate(LayoutInflater.java:755) 
      at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 
      at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
      at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 
      at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290) 
      at android.app.Activity.setContentView(Activity.java:1929) 
      at com.arul.anatotion.Navigation.onCreate(Navigation.java:38) 
      at android.app.Activity.performCreate(Activity.java:5231) 
      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
            at android.app.ActivityThread.access$800(ActivityThread.java:135) 
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
            at android.os.Handler.dispatchMessage(Handler.java:102) 
            at android.os.Looper.loop(Looper.java:136) 
            at android.app.ActivityThread.main(ActivityThread.java:5017) 
            at java.lang.reflect.Method.invokeNative(Native Method) 
            at java.lang.reflect.Method.invoke(Method.java:515) 
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
            at dalvik.system.NativeStart.main(Native Method) 
    Caused by: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.ListView 
      at com.arul.anatotion.NavigationDrawerFragment.onCreateView(NavigationDrawerFragment.java:92) 
      at android.app.Fragment.performCreateView(Fragment.java:1700) 
      at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:866) 
      at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1040) 
      at android.app.FragmentManagerImpl.addFragment(FragmentManager.java:1142) 
      at android.app.Activity.onCreateView(Activity.java:4786) 
      at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689) 
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:755) 
            at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 
            at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
            at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290) 
            at android.app.Activity.setContentView(Activity.java:1929) 
            at com.arul.anatotion.Navigation.onCreate(Navigation.java:38) 
            at android.app.Activity.performCreate(Activity.java:5231) 
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
            at android.app.ActivityThread.access$800(ActivityThread.java:135) 
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
            at android.os.Handler.dispatchMessage(Handler.java:102) 
            at android.os.Looper.loop(Looper.java:136) 
            at android.app.ActivityThread.main(ActivityThread.java:5017) 
            at java.lang.reflect.Method.invokeNative(Native Method) 
            at java.lang.reflect.Method.invoke(Method.java:515) 
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
            at dalvik.system.NativeStart.main(Native Method) 

一个错误上NavigationDrawerFragment

我提到这个答案，但它是没有用的Add EditText on Navigation Drawer Android

fragment_navigation抽屉

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="match_parent" 
    android:layout_height="match_parent"> 


    <ImageView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/imageView" 
     android:src="@drawable/ic_launcher"/> 

    <TextView 
     android:id="@+id/section_label" 

     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="@string/app_name" 
     android:layout_marginTop="20dp" 
     android:layout_marginLeft="20dp" 
     android:textStyle="bold" /> 

</LinearLayout> 

<ListView xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:choiceMode="singleChoice" 
    android:divider="#FFFFFF" 
    android:dividerHeight="0dp" 
    tools:context=".NavigationDrawerFragment" /> 

    </LinearLayout> 

NavigationDrawerFra gment

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; 
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) { 
    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); 
     } 
    }); 
    mDrawerListView.setAdapter(new ArrayAdapter<String>(
      getActionBar().getThemedContext(), 
      android.R.layout.simple_list_item_1, 
      android.R.id.text1, 
      new String[]{ 
        getString(R.string.title_section1), 
        getString(R.string.title_section2), 
        getString(R.string.title_section3), 
      })); 
    mDrawerListView.setItemChecked(mCurrentSelectedPosition, true); 
    return mDrawerListView; 
} 

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.drawable.ic_drawer,    /* nav drawer image to replace 'Up' caret */ 
      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().invalidateOptionsMenu(); // 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().invalidateOptionsMenu(); // 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_example) { 
     Toast.makeText(getActivity(), "Example action.", 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 getActivity().getActionBar(); 
} 

/** 
* 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); 
} 
} 

导航的.java

public class Navigation extends Activity 
     implements HomeFragment.OnFragmentInteractionListener, NavigationDrawerFragment.NavigationDrawerCallbacks, NewsFragment.OnFragmentInteractionListener{ 
    @Override 
    public void onFragmentInteraction(Uri uri) { 

    } 

    /** 
    * Fragment managing the behaviors, interactions and presentation of the navigation drawer. 
    */ 
    private NavigationDrawerFragment mNavigationDrawerFragment; 

    /** 
    * Used to store the last screen title. For use in {@link #restoreActionBar()}. 
    */ 
    private CharSequence mTitle; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_navigation); 
     mNavigationDrawerFragment = (NavigationDrawerFragment)getFragmentManager().findFragmentById(R.id.navigation_drawer); 
     mTitle = getTitle(); 
     // Set up the drawer. 
     mNavigationDrawerFragment.setUp(
       R.id.navigation_drawer, 
       (DrawerLayout) findViewById(R.id.drawer_layout)); 
    } 

    @Override 
    public void onNavigationDrawerItemSelected(int position) { 
     // update the main content by replacing fragments 

     FragmentManager fragmentManager = getFragmentManager(); 

     switch(position){ 
      case 0: 
       HomeFragment homeFragment = new HomeFragment(); 
       fragmentManager.beginTransaction().replace(R.id.container, HomeFragment.newInstance("","")) 
       .commit(); 
//    Toast.makeText(getApplicationContext(),"Entered",Toast.LENGTH_LONG).show(); 
       break; 
      case 1: 
       NewsFragment newsFragment = new NewsFragment(); 
       fragmentManager.beginTransaction() 
       .replace(R.id.container, NewsFragment.newInstance("","")) 
       .commit(); 
//    Toast.makeText(getApplicationContext(),"Entered",Toast.LENGTH_LONG).show(); 
       break; 
      case 2: 
       Intent intent= new Intent(this,PlayerActivity.class); 
       startActivity(intent); 

     } 

//  fragmentManager.beginTransaction() 
//    .replace(R.id.container, PlaceholderFragment.newInstance(position + 1)) 
//    .commit(); 
    } 

    public void onSectionAttached(int number) { 
     switch (number) { 
      case 1: 
       mTitle = getString(R.string.title_section1); 
       break; 
      case 2: 
       mTitle = getString(R.string.title_section2); 
       break; 
      case 3: 
       mTitle = getString(R.string.title_section3); 
       break; 
     } 
    } 

    public void restoreActionBar() { 
     ActionBar actionBar = getActionBar(); 
     actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); 
     actionBar.setDisplayShowTitleEnabled(true); 
     actionBar.setTitle(mTitle); 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     if (!mNavigationDrawerFragment.isDrawerOpen()) { 
      // Only show items in the action bar relevant to this screen 
      // if the drawer is not showing. Otherwise, let the drawer 
      // decide what to show in the action bar. 
      getMenuInflater().inflate(R.menu.navigation, menu); 
      restoreActionBar(); 
      return true; 
     } 
     return super.onCreateOptionsMenu(menu); 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 
     if (id == R.id.action_settings) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 

    /** 
    * A placeholder fragment containing a simple view. 
    */ 
    public static class PlaceholderFragment extends Fragment { 
     /** 
     * The fragment argument representing the section number for this 
     * fragment. 
     */ 
     private static final String ARG_SECTION_NUMBER = "section_number"; 

     /** 
     * Returns a new instance of this fragment for the given section 
     * number. 
     */ 
     public static PlaceholderFragment newInstance(int sectionNumber) { 
      PlaceholderFragment fragment = new PlaceholderFragment(); 
      Bundle args = new Bundle(); 
      args.putInt(ARG_SECTION_NUMBER, sectionNumber); 
      fragment.setArguments(args); 
      return fragment; 
     } 

     public PlaceholderFragment() { 
     } 

     @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, 
       Bundle savedInstanceState) { 
      View rootView = inflater.inflate(R.layout.fragment_navigation, container, false); 
      return rootView; 
     } 

     @Override 
     public void onAttach(Activity activity) { 
      super.onAttach(activity); 
      ((Navigation) activity).onSectionAttached(
        getArguments().getInt(ARG_SECTION_NUMBER)); 
     } 
    } 

} 

Answer 1

Caused by: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.ListView 

在该片段中的onCreateView()方法，你充气用的LinearLayout作为根元素的布局，然后尝试将其转换为一个ListView 。更改第一行是方法：

View rootView = inflater.inflate(
    R.layout.fragment_navigation_drawer, container, false); 
mDrawerListView = (ListView) rootView.findViewById(R.id.drawer_list); 

然后改变return 声明：

return rootView; 

，并添加以下ID在布局XML ListView控件：

android:id="@+id/drawer_list"