安卓.view.InflateException : Binary XML file error

Question

我创建了一个应用程序，当它打开时会显示 map ，当我想在按下 ActionBar 中的按钮时打开 NavigationFragment。我在我的应用程序中实现了 map ，它工作得很好，但是当我添加 NavigationDrawer 时，我收到了这个错误:

04-18 13:20:49.942: E/AndroidRuntime(5408): Process: com.wunderlist.slidinglayersample, PID: 5408
04-18 13:20:49.942: E/AndroidRuntime(5408): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.wunderlist.slidinglayersample/com.wunderlist.slidinglayersample.MainActivity}: android.view.InflateException: Binary XML file line #72: Error inflating class fragment
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.ActivityThread.access$800(ActivityThread.java:144)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.os.Handler.dispatchMessage(Handler.java:102)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.os.Looper.loop(Looper.java:135)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.ActivityThread.main(ActivityThread.java:5221)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at java.lang.reflect.Method.invoke(Native Method)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at java.lang.reflect.Method.invoke(Method.java:372)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
04-18 13:20:49.942: E/AndroidRuntime(5408): Caused by: android.view.InflateException: Binary XML file line #72: Error inflating class fragment
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:763)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:377)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.Activity.setContentView(Activity.java:2144)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at com.wunderlist.slidinglayersample.MainActivity.onCreate(MainActivity.java:83)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.Activity.performCreate(Activity.java:5937)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
04-18 13:20:49.942: E/AndroidRuntime(5408):     ... 10 more
04-18 13:20:49.942: E/AndroidRuntime(5408): Caused by: java.lang.NullPointerException
04-18 13:20:49.942: E/AndroidRuntime(5408):     at java.lang.VMClassLoader.findLoadedClass(Native Method)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:362)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at java.lang.ClassLoader.loadClass(ClassLoader.java:499)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.Fragment.instantiate(Fragment.java:604)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.Fragment.instantiate(Fragment.java:582)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2108)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.app.Activity.onCreateView(Activity.java:5286)
04-18 13:20:49.942: E/AndroidRuntime(5408):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733)

XML 文件

    <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">

    <RelativeLayout
        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"
                    tools:context=".MainActivity">


        <com.wunderlist.slidinglayer.SlidingLayer
                android:id="@+id/slidingLayer1"
                android:layout_width="@dimen/layer_size"
                android:layout_height="match_parent"

            >

            <RelativeLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:background="#14ad8f"
               >

                <Button
                        android:id="@+id/buttonClose"
                        style="@style/ButtonRed"
                        android:onClick="buttonClicked"
                        android:layout_marginBottom="60dp"
                        android:layout_alignParentBottom="true"
                        android:layout_centerHorizontal="true"
                        android:text="@string/close_button_container"/>


                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textAppearance="?android:attr/textAppearanceMedium"
                    android:text="Nosaukums"
                    android:id="@+id/fragNosaukums" />
            </RelativeLayout>



        </com.wunderlist.slidinglayer.SlidingLayer>

        <FrameLayout android:id="@+id/container" android:layout_width="match_parent"
            android:layout_height="match_parent" />


        <fragment android:id="@+id/navigation_drawer"
            android:layout_width="@dimen/navigation_drawer_width" android:layout_height="match_parent"
            android:layout_gravity="start"

            tools:layout="@layout/fragment_navigation_drawer" />

        <fragment
            android:id="@+id/map"
            android:name="com.google.android.gms.maps.MapFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            />


    </RelativeLayout>
</android.support.v4.widget.DrawerLayout>

MainActivity 类

public class MainActivity extends Activity {


    //VARIABLES DEFINED HERE


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

        fragNosaukums = (TextView) findViewById(R.id.fragNosaukums);

        googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
        googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
        googleMap.getUiSettings();
        googleMap.getUiSettings().setZoomControlsEnabled(true);
        googleMap.setMyLocationEnabled(true);

        bindViews();
        initState();

        mSlidingLayer.bringToFront();


    }



    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu, menu);

        return true;
    }

    @SuppressLint("NewApi")
    @Override
    protected void onResume() {
        super.onResume();

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            getActionBar().setDisplayHomeAsUpEnabled(true);

        }
    }

    /**
     * View binding
     */
    private void bindViews() {
        mSlidingLayer = (SlidingLayer) findViewById(R.id.slidingLayer1);
//        swipeText = (TextView) findViewById(R.id.swipeText);
    }

    /**
     * Initializes the origin state of the layer
     */
    private void initState() {

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);

        setupSlidingLayerPosition(prefs.getString("layer_location", "right"));

        setupShadow(prefs.getBoolean("layer_has_shadow", false));
        setupLayerOffset(prefs.getBoolean("layer_has_offset", false));
        setupPreviewMode(prefs.getBoolean("preview_mode_enabled", false));
    }

    private void setupSlidingLayerPosition(String layerPosition) {

        LayoutParams rlp = (LayoutParams) mSlidingLayer.getLayoutParams();
        int textResource;
        Drawable d;

//        if (layerPosition.equals("right")) {
            textResource = R.string.swipe_right_label;
            d = getResources().getDrawable(R.drawable.container_rocket_right);

            mSlidingLayer.setStickTo(SlidingLayer.STICK_TO_RIGHT);


        d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
//        swipeText.setCompoundDrawables(null, d, null, null);
//        swipeText.setText(getResources().getString(textResource));
        mSlidingLayer.setLayoutParams(rlp);
    }

    private void setupShadow(boolean enabled) {
        if (enabled) {
            mSlidingLayer.setShadowSizeRes(R.dimen.shadow_size);
            mSlidingLayer.setShadowDrawable(R.drawable.sidebar_shadow);
        } else {
            mSlidingLayer.setShadowSize(0);
            mSlidingLayer.setShadowDrawable(null);
        }
    }

    private void setupLayerOffset(boolean enabled) {
        int offsetDistance = enabled ? getResources().getDimensionPixelOffset(R.dimen.offset_distance) : 0;
        mSlidingLayer.setOffsetDistance(offsetDistance);
    }

    private void setupPreviewMode(boolean enabled) {
        int previewOffset = enabled ? getResources().getDimensionPixelOffset(R.dimen.preview_offset_distance) : -1;
        mSlidingLayer.setPreviewOffsetDistance(previewOffset);
    }

    public void buttonClicked(View v) {
        switch (v.getId()) {
//        case R.id.buttonOpen:
//            mSlidingLayer.openLayer(true);
//            break;
        case R.id.buttonClose:
            mSlidingLayer.closeLayer(true);
            break;
        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        switch (keyCode) {
        case KeyEvent.KEYCODE_BACK:
            if (mSlidingLayer.isOpened()) {
                mSlidingLayer.closeLayer(true);
                return true;
            }

        default:
            return super.onKeyDown(keyCode, event);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {


            case R.id.addNewEvent:

                Intent intent = new Intent(this, AddEvent.class);
                startActivity(intent);
                ;

            case android.R.id.home:
                //Do stuff
                //mDrawerLayout.openDrawer(Gravity.LEFT);
                return true;
        }


        return true;
    }


}

有人能帮忙吗？

更新

我添加了这一行:android:name="com.google.android.gms.maps.MapFragment"正如 kamil zych 所建议的，我现在遇到了这个错误:

04-18 13:45:01.999: E/AndroidRuntime(5473): Caused by: android.app.Fragment$InstantiationException: Trying to instantiate a class com.wunderlist.slidinglayersample.NavigationDrawerFragment that is not a Fragment
04-18 13:45:01.999: E/AndroidRuntime(5473):     at android.app.Fragment.instantiate(Fragment.java:606)
04-18 13:45:01.999: E/AndroidRuntime(5473):     at android.app.Fragment.instantiate(Fragment.java:582)
04-18 13:45:01.999: E/AndroidRuntime(5473):     at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2108)
04-18 13:45:01.999: E/AndroidRuntime(5473):     at android.app.Activity.onCreateView(Activity.java:5286)
04-18 13:45:01.999: E/AndroidRuntime(5473):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:733)
04-18 13:45:01.999: E/AndroidRuntime(5473): Caused by: java.lang.ClassCastException

这是fragment_navigation_drawer:

<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="@android:color/transparent" android:dividerHeight="0dp"
    android:background="#cccc" tools:context=".NavigationDrawerFragment" />

主要 fragment :

<RelativeLayout 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:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context=".MainActivity$PlaceholderFragment">

    <TextView android:id="@+id/section_label" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:text="" />

</RelativeLayout>

更新

抽屉导航 fragment :

 */
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_activated_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().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.menu, 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 ((ActionBarActivity) 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);
    }
}

Answer 1

您必须以与开始标记匹配的结束结束您的 xml。

因此，如果您的 xml 开头为

<android.support.v4.widget.DrawerLayout
  ..
  .. >

你也必须关闭它，所以在文件底部添加它

</android.support.v4.widget.DrawerLayout>