Android 屏幕方向更改时强制关闭

在我按下“Ctrl-F11”旋转屏幕后，我的应用程序被迫关闭。以下是错误日志：

 01-02 13:47:30.663: E/AndroidRuntime(498): FATAL EXCEPTION: main
 01-02 13:47:30.663: E/AndroidRuntime(498): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ecnu.sei.manuzhang.study/com.ecnu.sei.manuzhang.study.Main}: java.lang.ClassCastException: android.widget.ExpandableListView$SavedState
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:2832)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.ActivityThread.access$1600(ActivityThread.java:117)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.os.Handler.dispatchMessage(Handler.java:99)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.os.Looper.loop(Looper.java:130)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.ActivityThread.main(ActivityThread.java:3683)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at java.lang.reflect.Method.invokeNative(Native Method)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at java.lang.reflect.Method.invoke(Method.java:507)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at dalvik.system.NativeStart.main(Native Method)
 01-02 13:47:30.663: E/AndroidRuntime(498): Caused by: java.lang.ClassCastException: android.widget.ExpandableListView$SavedState
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.widget.ListView.onRestoreInstanceState(ListView.java:3763)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.View.dispatchRestoreInstanceState(View.java:6278)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchThawSelfOnly(ViewGroup.java:1228)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.widget.AdapterView.dispatchRestoreInstanceState(AdapterView.java:767)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1215)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1215)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1215)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1215)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1215) 
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1215)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1215)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1215)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.view.View.restoreHierarchyState(View.java:6257)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at com.android.internal.policy.impl.PhoneWindow.restoreHierarchyState(PhoneWindow.java:1486)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.Activity.onRestoreInstanceState(Activity.java:844)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.TabActivity.onRestoreInstanceState(TabActivity.java:58)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.Activity.performRestoreInstanceState(Activity.java:816)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.Instrumentation.callActivityOnRestoreInstanceState(Instrumentation.java:1096)
 01-02 13:47:30.663: E/AndroidRuntime(498):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1625)
 01-02 13:47:30.663: E/AndroidRuntime(498):     ... 12 more 

如图所示，它与ExpandableListView有关。因此，我在此附上可疑活动及其布局：

public class StudyHalls extends ExpanableListActivity {
@Override 
public void onCreate(Bundle savedInstanceState) {
    Log.d(TAG, "on create");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.halls);
            ...
    }
    ...
 }

halls.xml

<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ExpandableListView
    android:id="@id/android:list"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
/>

</LinearLayout>

使用CTRL+F12更改方向，查看应用程序是否仍然崩溃，或者在类名

android:configChanges=“keyboardHidden | orientation”前面的清单文件中提到以下标记

使用CTRL+F12更改方向，查看应用程序是否仍然崩溃，否则请在类名

android:configChanges=“keyboardHidden | orientation”前面的清单文件中提到以下标记。

您似乎正在使用

onRestoreInstaceState（）

委托。这项工作只适用于默认视图。对于像这里这样的自定义视图，请在清单的活动标记中使用

android:configChanges=“orientation”

，并删除

onRestoreInstaceState（）

，似乎您正在使用

onRestoreInstaceState（）

委托。这项工作只适用于默认视图。对于像这里这样的自定义视图，请在清单的活动标记中使用

android:configChanges=“orientation”

，并删除

onRestoreInstaceState（）

thx，

android:configChanges

工作，但在“orientation”中为“o”不应该capitalized@manuzhang：它是大写字母O，当您提到configChanges时，它是默认选项。是的，我刚刚又看到了它。是的，它很小。请更正它，因为系统不允许其他人对它进行这样的小编辑，

android:configChanges

可以工作，但“方向”中的“O”可以不应该capitalized@manuzhang：它是大写字母O，当您提到ConfigChanges时，它作为默认选项出现。是的，我刚刚再次看到它。是的，它很小。请更正它，因为系统不允许其他人进行这种小的编辑