我正在阅读Arno Becker和Marcus Pant的“Android 2”一书。在本书的过程中,他们与读者一起开发了一个小型的android应用程序。 有一点我现在得到一个我无法解决的错误。 我有一个ListActivity,应该填充静态数据。每当我启动活动时,我都会收到一个异常资源$ NotFoundException,其中包含文本:“xml类型布局资源ID中的文件res / layout / simple_list_item_1.xml”。
以下是调用活动的代码:
public void onClickManageContacts(View view)
{
final Intent intent=new Intent(this,ListContacts.class);
startActivity(intent);
}
以下是活动的代码:
package androidbook.amando.gui;
import androidbook.amando.R;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class ListContacts extends ListActivity {
private static final String[] NAMES = new String[] { "Berthold Schmitz",
"Chantal Schulze", "Bartolomäus Weissenbaum", "Jean-Paul Küppers" };
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.geokontakte_auflisten);
showContacts();
}
private void showContacts() {
final ArrayAdapter<String> contactAdapter = new ArrayAdapter<String>(
this, android.R.layout.simple_list_item_1, NAMES);
setListAdapter(contactAdapter);
}
}
RES /布局/ geokontakte_auflisten.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Spinner
android:layout_height="wrap_content"
android:drawSelectorOnTop="true"
android:id="@+id/sp_sortierung"
android:layout_width="wrap_content"
android:entries="@array/Sortierung">
</Spinner>
<ListView
android:layout_height="wrap_content"
android:id="@+id/android:list"
android:layout_width="wrap_content"
android:textFilterEnabled="true"
android:cacheColorHint="@color/hintergrund">
</ListView>
<TextView
android:id="@+id/android:empty"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="@string/txt_geokontakt_auflisten_keineDaten">
</TextView>
</LinearLayout>
抛出异常的时间是在showContacts()方法完成之后。这里是堆栈跟踪:
Thread [<1> main] (Suspended (exception Resources$NotFoundException))
Resources.loadXmlResourceParser(int, String) line: 1877
Resources.getLayout(int) line: 731
PhoneLayoutInflater(LayoutInflater).inflate(int, ViewGroup, boolean) line: 318
ArrayAdapter.createViewFromResource(int, View, ViewGroup, int) line: 332
ArrayAdapter.getView(int, View, ViewGroup) line: 323
ListView(AbsListView).obtainView(int, boolean[]) line: 1430
ListView.measureHeightOfChildren(int, int, int, int, int) line: 1216
ListView.onMeasure(int, int) line: 1127
ListView(View).measure(int, int) line: 8313
LinearLayout(ViewGroup).measureChildWithMargins(View, int, int, int, int) line: 3138
LinearLayout.measureChildBeforeLayout(View, int, int, int, int, int) line: 1017
LinearLayout.measureVertical(int, int) line: 386
LinearLayout.onMeasure(int, int) line: 309
LinearLayout(View).measure(int, int) line: 8313
FrameLayout(ViewGroup).measureChildWithMargins(View, int, int, int, int) line: 3138
FrameLayout.onMeasure(int, int) line: 250
FrameLayout(View).measure(int, int) line: 8313
PhoneWindow$DecorView(ViewGroup).measureChildWithMargins(View, int, int, int, int) line: 3138
PhoneWindow$DecorView(FrameLayout).onMeasure(int, int) line: 250
PhoneWindow$DecorView(View).measure(int, int) line: 8313
ViewRoot.performTraversals() line: 839
ViewRoot.handleMessage(Message) line: 1859
ViewRoot(Handler).dispatchMessage(Message) line: 99
Looper.loop() line: 123
ActivityThread.main(String[]) line: 3683
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 507
ZygoteInit$MethodAndArgsCaller.run() line: 839
ZygoteInit.main(String[]) line: 597
NativeStart.main(String[]) line: not available [native method]
当我注释掉setListAdapter()行时,不抛出异常。当给定数组为空且没有要显示的列表项时,异常也不会抛出。
当我将SDK中的simple_list_item_1.xml文件复制到我自己的项目(res / layout)时,错误消息从上面提到的消息(文件res / layout / simple_list_item_1.xml从xml类型布局资源ID)更改为“ERROR / AndroidRuntime(2609):android.content.res.Resources $ NotFoundException:文件res / layout / typing_filter.xml来自xml类型布局资源ID#0x1090069”。这个错误更具抵抗力。将typing_filter.xml复制到我自己的项目目录中不会改变任何内容。
我也在论坛anddev.org上问了这个问题,但没有得到答案,现在意识到那里的答案率并不高。
编辑: 我刚看到LogCat打印出比标准eclipse视图更有用的堆栈跟踪。 在抛出Resources $ NotFoundException之前似乎存在FileNotFound异常:
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): FATAL EXCEPTION: main
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): android.content.res.Resources$NotFoundException: File res/layout/simple_list_item_1.xml from xml type layout resource ID #0x1090003
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.content.res.Resources.loadXmlResourceParser(Resources.java:1916)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.content.res.Resources.loadXmlResourceParser(Resources.java:1871)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.content.res.Resources.getLayout(Resources.java:731)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.LayoutInflater.inflate(LayoutInflater.java:318)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:332)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:323)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.AbsListView.obtainView(AbsListView.java:1430)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.ListView.measureHeightOfChildren(ListView.java:1216)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.ListView.onMeasure(ListView.java:1127)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.View.measure(View.java:8313)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.LinearLayout.measureVertical(LinearLayout.java:386)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.View.measure(View.java:8313)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.View.measure(View.java:8313)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.View.measure(View.java:8313)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.ViewRoot.performTraversals(ViewRoot.java:839)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.view.ViewRoot.handleMessage(ViewRoot.java:1859)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.os.Handler.dispatchMessage(Handler.java:99)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.os.Looper.loop(Looper.java:123)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.app.ActivityThread.main(ActivityThread.java:3683)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at java.lang.reflect.Method.invokeNative(Native Method)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at java.lang.reflect.Method.invoke(Method.java:507)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at dalvik.system.NativeStart.main(Native Method)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): Caused by: java.io.FileNotFoundException: res/layout/simple_list_item_1.xml
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.content.res.AssetManager.openXmlAssetNative(Native Method)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.content.res.AssetManager.openXmlBlockAsset(AssetManager.java:486)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): at android.content.res.Resources.loadXmlResourceParser(Resources.java:1898)
06-25 19:41:40.844: ERROR/AndroidRuntime(2802): ... 30 more
EDIT2: 感谢@DArkO的快速回答。我更改了res / layout / geokontakte_auflisten.xml,但我收到了完全相同的错误。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Spinner
android:layout_height="wrap_content"
android:drawSelectorOnTop="true"
android:id="@+id/sp_sortierung"
android:layout_width="wrap_content"
android:entries="@array/Sortierung">
</Spinner>
<ListView
android:layout_height="wrap_content"
android:id="@android:id/list"
android:layout_width="wrap_content"
android:textFilterEnabled="true"
android:cacheColorHint="@color/hintergrund">
</ListView>
<TextView
android:id="@android:id/empty"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="@string/txt_geokontakt_auflisten_keineDaten">
</TextView>
</LinearLayout>
我正在使用API版本10和Android 2.3.3模拟器。
答案 0 :(得分:3)
列表活动只有在您的列表ID为:
时才能支持android:id="@android:id/list"
在这里替换那个:
<ListView
android:layout_height="wrap_content"
android:id="@+id/android:list"
android:layout_width="wrap_content"
android:textFilterEnabled="true"
android:cacheColorHint="@color/hintergrund">
请参阅此link: