通过实施导航抽屉我遇到了问题。 我的xml和.java代码：
<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" >
<!-- The main content view -->
<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="@drawable/hintergrund"
tools:context=".MainActivity" >
<ImageButton
android:id="@+id/imgBtNewDocuStartPage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="20dp"
android:layout_marginTop="15dp"
android:background="@drawable/buttonschatten"
android:contentDescription="@drawable/ic_notiz"
android:onClick="dokuklick"
android:src="@drawable/ic_notiz" />
<ImageButton
android:id="@+id/imgBtSearchStartPage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/imgBtNewDocuStartPage"
android:layout_toRightOf="@+id/imgBtNewDocuStartPage"
android:background="@drawable/buttonschatten"
android:contentDescription="@drawable/ic_suchen"
android:onClick="suchenklick"
android:src="@drawable/ic_suchen" />
<Button
android:id="@+id/btUnreadCommentsStartPage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/imgBtNewDocuStartPage"
android:layout_marginTop="26dp"
android:background="@drawable/rahmen"
android:text="@string/Start.comment"
android:drawableRight="@drawable/ic_kom"
android:textColor="@color/button_color" />
<Button
android:id="@+id/btUnreadDocusStartPage"
style="@style/AppBaseTheme"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/btUnreadCommentsStartPage"
android:layout_alignRight="@+id/btUnreadCommentsStartPage"
android:layout_below="@+id/btUnreadCommentsStartPage"
android:layout_marginTop="10dp"
android:background="@drawable/rahmen"
android:onClick="ungeleseneDoku"
android:text="@string/Start.unread_docu"
android:drawableRight="@drawable/ic_doku"
android:textColor="@color/button_color" />
<Button
android:id="@+id/btUnreadEvaluationsStartPage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/btUnreadDocusStartPage"
android:layout_alignParentRight="true"
android:layout_below="@+id/btUnreadDocusStartPage"
android:layout_marginTop="10dp"
android:background="@drawable/rahmen"
android:text="@string/Start.outcomes"
android:drawableRight="@drawable/ic_erg"
android:textColor="@color/button_color" />
<Button
android:id="@+id/btFavouritesStartPage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/btUnreadEvaluationsStartPage"
android:layout_alignRight="@+id/btUnreadEvaluationsStartPage"
android:layout_below="@+id/btUnreadEvaluationsStartPage"
android:layout_marginTop="10dp"
android:background="@drawable/rahmen"
android:text="@string/Start.favorite"
android:drawableRight="@drawable/ic_fav"
android:textColor="@color/button_color" />
</RelativeLayout>
<!-- The navigation drawer -->
<ListView
android:id="@+id/drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:background="#78BF3D"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp" />
</android.support.v4.widget.DrawerLayout>
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.content.res.Configuration;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.ListView;
public class StartActivity extends Activity {
private ListView mDrawerList;
private DrawerLayout mDrawer;
private CustomActionBarDrawerToggle mDrawerToggle;
private String[] menuItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.startpage);
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
// set a custom shadow that overlays the main content when the drawer
// opens
mDrawer.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
_initMenu();
mDrawerToggle = new CustomActionBarDrawerToggle(this, mDrawer);
mDrawer.setDrawerListener(mDrawerToggle);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.items, menu);
return true;
}
private void _initMenu() {
NsMenuAdapter mAdapter = new NsMenuAdapter(this);
// Add first block
menuItems = getResources().getStringArray(
R.array.ns_menu_items);
String[] menuItemsIcon = getResources().getStringArray(
R.array.ns_menu_items_icon);
int res = 0;
for (String item : menuItems) {
int id_title = getResources().getIdentifier(item, "string",
this.getPackageName());
int id_icon = getResources().getIdentifier(menuItemsIcon[res],
"drawable", this.getPackageName());
NsMenuItemModel mItem = new NsMenuItemModel(id_title, id_icon);
mAdapter.addItem(mItem);
res++;
}
mDrawerList = (ListView) findViewById(R.id.drawer);
if (mDrawerList != null)
mDrawerList.setAdapter(mAdapter);
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
}
@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);
mDrawerToggle.onConfigurationChanged(newConfig);
}
/* 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 = mDrawer.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_refresh).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
/*
* The action bar home/up should open or close the drawer.
* ActionBarDrawerToggle will take care of this.
*/
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle your other action bar items...
return super.onOptionsItemSelected(item);
}
private class CustomActionBarDrawerToggle extends ActionBarDrawerToggle {
public CustomActionBarDrawerToggle(Activity mActivity,DrawerLayout mDrawerLayout){
super(
mActivity,
mDrawerLayout,
R.drawable.ic_drawer,
R.string.ns_menu_open,
R.string.ns_menu_close);
}
@Override
public void onDrawerClosed(View view) {
getActionBar().setTitle(getString(R.string.ns_menu_close));
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
@Override
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(getString(R.string.ns_menu_open));
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
}
private class DrawerItemClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// Highlight the selected item, update the title, and close the drawer
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawer.closeDrawer(mDrawerList);
}
}
}
这不起作用，昨天它起作用了，现在它崩溃了。 我尝试了一切，但没有找到解决方案。我希望你能帮助我。
07-02 12:04:24.715: E/Trace(3282): error opening trace file: No such file or directory (2)
07-02 12:04:32.394: E/dalvikvm(3282): Could not find class 'android.support.v4.widget.DrawerLayout', referenced from method com.example.talkreflection.StartActivity.onCreate
07-02 12:04:32.705: E/AndroidRuntime(3282): FATAL EXCEPTION: main
07-02 12:04:32.705: E/AndroidRuntime(3282): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.talkreflection/com.example.talkreflection.StartActivity}: android.view.InflateException: Binary XML file line #1: Error inflating class android.support.v4.widget.DrawerLayout
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.ActivityThread.access$600(ActivityThread.java:141)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.os.Handler.dispatchMessage(Handler.java:99)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.os.Looper.loop(Looper.java:137)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.ActivityThread.main(ActivityThread.java:5041)
07-02 12:04:32.705: E/AndroidRuntime(3282): at java.lang.reflect.Method.invokeNative(Native Method)
07-02 12:04:32.705: E/AndroidRuntime(3282): at java.lang.reflect.Method.invoke(Method.java:511)
07-02 12:04:32.705: E/AndroidRuntime(3282): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-02 12:04:32.705: E/AndroidRuntime(3282): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-02 12:04:32.705: E/AndroidRuntime(3282): at dalvik.system.NativeStart.main(Native Method)
07-02 12:04:32.705: E/AndroidRuntime(3282): Caused by: android.view.InflateException: Binary XML file line #1: Error inflating class android.support.v4.widget.DrawerLayout
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.view.LayoutInflater.inflate(LayoutInflater.java:466)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
07-02 12:04:32.705: E/AndroidRuntime(3282): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.Activity.setContentView(Activity.java:1881)
07-02 12:04:32.705: E/AndroidRuntime(3282): at com.example.talkreflection.StartActivity.onCreate(StartActivity.java:29)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.Activity.performCreate(Activity.java:5104)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
07-02 12:04:32.705: E/AndroidRuntime(3282): ... 11 more
07-02 12:04:32.705: E/AndroidRuntime(3282): Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v4.widget.DrawerLayout" on path: /data/app/com.example.talkreflection-2.apk
07-02 12:04:32.705: E/AndroidRuntime(3282): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
07-02 12:04:32.705: E/AndroidRuntime(3282): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
07-02 12:04:32.705: E/AndroidRuntime(3282): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.view.LayoutInflater.createView(LayoutInflater.java:552)
07-02 12:04:32.705: E/AndroidRuntime(3282): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
07-02 12:04:32.705: E/AndroidRuntime(3282): ... 20 more
答案 0 :(得分：8)
不会使用APK文件导出支持库。确保你的libs文件夹中有andorid-support.jar（或类似的文件），然后转到你项目的属性。
（如果您没有该jar文件，请右键单击该项目并选择“Android工具” - >“添加支持库...”。）
在项目属性中转到Java Build Path - ＆gt;订购和导出，并确保选中Android私有库。然后清理您的项目并尝试再次运行该应用程序。
我假设您正在使用Eclipse。