抽屉布局在2.3设备上无法正常工作

Question

大家好，我实现了一个抽屉布局的演示应用程序，适用于所有Android设备。

主类如下：

import java.util.Locale;

import android.app.SearchManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;

private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mPlanetTitles;

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

    mTitle = mDrawerTitle = getTitle();
    mPlanetTitles = getResources().getStringArray(R.array.planets_array);
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    mDrawerList = (ListView) findViewById(R.id.left_drawer);

    // 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
    mDrawerList.setAdapter(new ArrayAdapter<String>(this,
            R.layout.drawer_list_item, mPlanetTitles));
    mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

    // enable ActionBar app icon to behave as action to toggle nav drawer
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeButtonEnabled(true);

    // ActionBarDrawerToggle ties together the the proper interactions
    // between the sliding drawer and the action bar app icon
    mDrawerToggle = new ActionBarDrawerToggle(
            this,                  /* host Activity */
            mDrawerLayout,         /* DrawerLayout object */
            R.drawable.ic_drawer,  /* nav drawer image to replace 'Up' caret */
            R.string.drawer_open,  /* "open drawer" description for accessibility */
            R.string.drawer_close  /* "close drawer" description for accessibility */
            ) {
        public void onDrawerClosed(View view) {
            getSupportActionBar().setTitle(mTitle);
            invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
        }

        public void onDrawerOpened(View drawerView) {
            getSupportActionBar().setTitle(mDrawerTitle);
            invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
        }
    };
    mDrawerLayout.setDrawerListener(mDrawerToggle);

    if (savedInstanceState == null) {
        selectItem(0);
    }
}

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

/* Called whenever we call invalidateOptionsMenu() */
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
    // If the nav drawer is open, hide action items related to the content view
    boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
    menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
    return super.onPrepareOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
     // The action bar home/up action should open or close the drawer.
     // ActionBarDrawerToggle will take care of this.
    if (mDrawerToggle.onOptionsItemSelected(item)) {
        return true;
    }
    // Handle action buttons
    switch(item.getItemId()) {
    case R.id.action_websearch:
        // create intent to perform web search for this planet
        Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
        intent.putExtra(SearchManager.QUERY, getSupportActionBar().getTitle());
        // catch event that there's no activity to handle intent
        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivity(intent);
        } else {
            Toast.makeText(this, R.string.app_not_available, Toast.LENGTH_LONG).show();
        }
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

/* The click listner for ListView in the navigation drawer */
private class DrawerItemClickListener implements ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        selectItem(position);
    }
}

private void selectItem(int position) {
    // update the main content by replacing fragments
    Fragment fragment = new PlanetFragment();
    Bundle args = new Bundle();
    args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
    fragment.setArguments(args);

    FragmentManager fragmentManager = getSupportFragmentManager();
    fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();

    // update selected item and title, then close the drawer
    mDrawerList.setItemChecked(position, true);
    setTitle(mPlanetTitles[position]);
    mDrawerLayout.closeDrawer(mDrawerList);
}

@Override
public void setTitle(CharSequence title) {
    mTitle = title;
    getSupportActionBar().setTitle(mTitle);
}

/**
 * When using the ActionBarDrawerToggle, you must call it during
 * onPostCreate() and onConfigurationChanged()...
 */

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    // Sync the toggle state after onRestoreInstanceState has occurred.
    mDrawerToggle.syncState();
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    // Pass any configuration change to the drawer toggls
    mDrawerToggle.onConfigurationChanged(newConfig);
}

/**
 * Fragment that appears in the "content_frame", shows a planet
 */
public static class PlanetFragment extends Fragment {
    public static final String ARG_PLANET_NUMBER = "planet_number";

    public PlanetFragment() {
        // Empty constructor required for fragment subclasses
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_planet, container, false);
        int i = getArguments().getInt(ARG_PLANET_NUMBER);
        String planet = getResources().getStringArray(R.array.planets_array)[i];

        int imageId = getResources().getIdentifier(planet.toLowerCase(Locale.getDefault()),
                        "drawable", getActivity().getPackageName());
        ((ImageView) rootView.findViewById(R.id.image)).setImageResource(imageId);
        getActivity().setTitle(planet);
        return rootView;
      }
    }
  }

我的drawer_main.xml如下：

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

<!-- As the main content view, the view below consumes the entire
     space available using match_parent in both dimensions. -->
<FrameLayout
    android:id="@+id/content_frame"
    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.
     The drawer is given a fixed width in dp and extends the full height of
     the container. A solid background is used for contrast
     with the content view. -->
<ListView
    android:id="@+id/left_drawer"
    android:layout_width="240dp"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:choiceMode="singleChoice"
    android:divider="@android:color/transparent"
    android:dividerHeight="0dp"
    android:background="#111"/>
    </android.support.v4.widget.DrawerLayout>

我的menifest.xml如下所示：

<?xml version="1.0" encoding="utf-8"?>

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="16" />

<supports-screens
    android:smallScreens="true"
    android:normalScreens="true"
    android:largeScreens="true"
    android:xlargeScreens="true"
    android:anyDensity="true"
    />
<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.appcompactdemo.MainActivity"
        android:label="@string/app_name" 
        android:theme="@style/Theme.AppCompat.Light.DarkActionBar">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
   </application>

 </manifest>

我使用的是Android支持库，根据操作栏文档，它适用于2.1或更高版本的设备，但在上面的例子中，在4.0设备上可以工作，在2.3设备上会出现以下错误：

07-27 08:46:56.037: E/AndroidRuntime(616): FATAL EXCEPTION: main
07-27 08:46:56.037: E/AndroidRuntime(616): android.view.InflateException: Binary XML file line #17: Error inflating class <unknown>
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.LayoutInflater.createView(LayoutInflater.java:518)
07-27 08:46:56.037: E/AndroidRuntime(616):  at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.LayoutInflater.inflate(LayoutInflater.java:386)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:332)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.ArrayAdapter.getView(ArrayAdapter.java:323)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.AbsListView.obtainView(AbsListView.java:1430)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.ListView.makeAndAddView(ListView.java:1745)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.ListView.fillDown(ListView.java:670)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.ListView.fillFromTop(ListView.java:727)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.ListView.layoutChildren(ListView.java:1598)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.AbsListView.onLayout(AbsListView.java:1260)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.View.layout(View.java:7175)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:702)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.View.layout(View.java:7175)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.View.layout(View.java:7175)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1254)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1130)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1047)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.View.layout(View.java:7175)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.View.layout(View.java:7175)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.View.layout(View.java:7175)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.ViewRoot.performTraversals(ViewRoot.java:1140)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.ViewRoot.handleMessage(ViewRoot.java:1859)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.os.Handler.dispatchMessage(Handler.java:99)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.os.Looper.loop(Looper.java:130)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.app.ActivityThread.main(ActivityThread.java:3683)
07-27 08:46:56.037: E/AndroidRuntime(616):  at java.lang.reflect.Method.invokeNative(Native Method)
07-27 08:46:56.037: E/AndroidRuntime(616):  at java.lang.reflect.Method.invoke(Method.java:507)
07-27 08:46:56.037: E/AndroidRuntime(616):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)  
07-27 08:46:56.037: E/AndroidRuntime(616):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
07-27 08:46:56.037: E/AndroidRuntime(616):  at dalvik.system.NativeStart.main(Native Method)
07-27 08:46:56.037: E/AndroidRuntime(616): Caused by: java.lang.reflect.InvocationTargetException
07-27 08:46:56.037: E/AndroidRuntime(616):  at java.lang.reflect.Constructor.constructNative(Native Method)
07-27 08:46:56.037: E/AndroidRuntime(616):  at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.LayoutInflater.createView(LayoutInflater.java:505)
07-27 08:46:56.037: E/AndroidRuntime(616):  ... 35 more
07-27 08:46:56.037: E/AndroidRuntime(616): Caused by: android.content.res.Resources$NotFoundException: Resource is not a Drawable (color or path): TypedValue{t=0x2/d=0x10102fd a=-1}
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.content.res.Resources.loadDrawable(Resources.java:1681)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.view.View.<init>(View.java:1951)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.TextView.<init>(TextView.java:350)
07-27 08:46:56.037: E/AndroidRuntime(616):  at android.widget.TextView.<init>(TextView.java:343)
 07-27 08:46:56.037: E/AndroidRuntime(616):     ... 38 more

有什么想法可以解决这个问题吗？

- Harshal Kalavadiya

---

我知道这与在drawer_list_item.xml中使用android:textAppearance="?android:attr/textAppearanceListItemSmall" android:background="?android:attr/activatedBackgroundIndicator" android:minHeight="?android:attr/listPreferredItemHeightSmall"有关，这是他们用作示例的。还不确定如何修复它...正在努力解决。 - Jon Adams

我曾经遇到过与Spinner类似的问题。似乎是主题有问题，@style/Theme.AppCompat.Light.DarkActionBar。将其设置为@style/Theme.AppCompat.Light可以解决我的问题。 - yadutaf

Answer 1

问题出在drawer_list_item.xml文件中。你需要删除这两行代码：

android:background="?android:attr/activatedBackgroundIndicator"
android:minHeight="?android:attr/listPreferredItemHeightSmall"

一旦这些被移除，它应该可以工作。这两个项目需要较新的api版本才能正常工作。

- blazingwolf

Answer 2

在应用其他答案的建议后，我仍然遇到了同一教程中相同的问题，但我刚刚发现是invalidateOptionsMenu();也会出问题。 你需要使用supportInvalidateOptionsMenu();，它就可以神奇地解决问题。

    mDrawerToggle = new ActionBarDrawerToggle(
        this,                  /* host Activity */
        mDrawerLayout,         /* DrawerLayout object */
        R.drawable.ic_drawer,  /* nav drawer image to replace 'Up' caret */
        R.string.drawer_open,  /* "open drawer" description for accessibility */
        R.string.drawer_close  /* "close drawer" description for accessibility */
        ) {
    public void onDrawerClosed(View view) {
        getSupportActionBar().setTitle(mTitle);
        supportInvalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
    }

    public void onDrawerOpened(View drawerView) {
        getSupportActionBar().setTitle(mDrawerTitle);
        supportInvalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
    }
    };

- Max Ingrosso