亲爱的stackoverflowers，
我在我的活动中使用导航抽屉，这是 xml：
<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" >
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<FrameLayout
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#3a3a3c" >
<ImageView
android:id="@+id/ImageView01"
android:layout_width="240dp"
android:layout_height="10dp"
android:layout_marginTop="20dp"
android:src="@drawable/border" />
<TextView
android:id="@+id/tvretailers"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="0dp"
android:text="Retailers"
android:textColor="#ffffff"
android:textSize="20sp" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="240dp"
android:layout_height="10dp"
android:layout_marginTop="300dp"
android:src="@drawable/border" />
<ListView
android:id="@+id/right_drawer_settings"
android:layout_width="wrap_content"
android:layout_height="250dp"
android:layout_marginTop="310dp"
android:background="#3a3a3c" >
</ListView>
<TextView
android:id="@+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="280dp"
android:text="Settings"
android:textColor="#ffffff"
android:textSize="20sp" />
<ListView
android:id="@+id/right_drawer_retailers"
android:layout_width="wrap_content"
android:layout_height="200dp"
android:layout_marginTop="30dp"
android:background="#3a3a3c" >
</ListView>
</FrameLayout>
</android.support.v4.widget.DrawerLayout>
但是，一旦我运行应用程序，我就会收到一个 xml 错误：
08-18 01:36:47.751: E/AndroidRuntime(26527): FATAL EXCEPTION: main
08-18 01:36:47.751: E/AndroidRuntime(26527): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.androidarabia.phones/com.androidarabia.Lebanon.LebanonDrawer}: java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.support.v4.widget.DrawerLayout$LayoutParams
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2246)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2296)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.app.ActivityThread.access$700(ActivityThread.java:151)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1281)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.os.Handler.dispatchMessage(Handler.java:99)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.os.Looper.loop(Looper.java:137)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.app.ActivityThread.main(ActivityThread.java:5293)
08-18 01:36:47.751: E/AndroidRuntime(26527): at java.lang.reflect.Method.invokeNative(Native Method)
08-18 01:36:47.751: E/AndroidRuntime(26527): at java.lang.reflect.Method.invoke(Method.java:511)
08-18 01:36:47.751: E/AndroidRuntime(26527): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
08-18 01:36:47.751: E/AndroidRuntime(26527): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
08-18 01:36:47.751: E/AndroidRuntime(26527): at dalvik.system.NativeStart.main(Native Method)
08-18 01:36:47.751: E/AndroidRuntime(26527): Caused by: java.lang.ClassCastException: android.widget.FrameLayout$LayoutParams cannot be cast to android.support.v4.widget.DrawerLayout$LayoutParams
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.support.v4.widget.DrawerLayout.isDrawerView(DrawerLayout.java:844)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.support.v4.widget.DrawerLayout.closeDrawer(DrawerLayout.java:1048)
08-18 01:36:47.751: E/AndroidRuntime(26527): at com.androidarabia.Lebanon.LebanonDrawer.selectItem(LebanonDrawer.java:104)
08-18 01:36:47.751: E/AndroidRuntime(26527): at com.androidarabia.Lebanon.LebanonDrawer.onCreate(LebanonDrawer.java:63)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.app.Activity.performCreate(Activity.java:5250)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1097)
08-18 01:36:47.751: E/AndroidRuntime(26527): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2210)
08-18 01:36:47.751: E/AndroidRuntime(26527): ... 11 more
在我在 FrameLayout 中只有一个列表视图之前，它工作正常，但经过一些修改后，我无法让它工作！希望你能帮忙！非常感谢stackoverflowers =）
全部代码：
public class LebanonDrawer extends SherlockFragmentActivity {
DrawerLayout mDrawerLayout;
ListView mDrawerList;
ActionBarDrawerToggle mDrawerToggle;
String[] title;
String[] subtitle;
int[] icon;
Fragment Lebanon = new Lebanon();
@SuppressWarnings("unchecked")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drawer_main);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.right_drawer_retailers);
String[] songsArray = { "Do", "RE", "MI", "FA", "SO", "LA", "SO" };
MenuListAdapter mla = new MenuListAdapter(this, songsArray);
mDrawerList.setAdapter(mla);
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, R.string.drawer_open,
R.string.drawer_close) {
public void onDrawerClosed(View view) {
// TODO Auto-generated method stub
super.onDrawerClosed(view);
}
public void onDrawerOpened(View drawerView) {
// TODO Auto-generated method stub
super.onDrawerOpened(drawerView);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.home) {
if (mDrawerLayout.isDrawerOpen(mDrawerList)) {
mDrawerLayout.closeDrawer(mDrawerList);
} else {
mDrawerLayout.openDrawer(mDrawerList);
}
}
return super.onOptionsItemSelected(item);
}
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) {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
// Locate Position
switch (position) {
case 0:
ft.replace(R.id.content_frame, Lebanon);
break;
}
ft.commit();
mDrawerList.setItemChecked(position, true);
// Close drawer
mDrawerLayout.closeDrawer(mDrawerList);
}
@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 toggles
mDrawerToggle.onConfigurationChanged(newConfig);
}
}