android - "android.view.View cannot be cast to android.view.ViewGroup"异常

Question

我正在开发一个 android 应用程序，我添加了一个 xml 布局文件，稍后应该是一个 fragment :

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

    <ImageView
        android:id="@+id/imgTile"
        android:src="@drawable/tile_background"
        android:contentDescription="@string/CD_TILE_BACKGROUND_IMAGE"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ImageView>

</View>

当我尝试返回 Eclipse 中的图形布局时，我在错误日志中得到了这个异常:

java.lang.ClassCastException: android.view.View cannot be cast to android.view.ViewGroup
    at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:740)
    at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:64)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:711)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:372)
    at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:321)
    at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:324)
    at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:325)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderService.createRenderSession(RenderService.java:372)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(GraphicalEditorPart.java:1361)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.recomputeLayout(GraphicalEditorPart.java:1115)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.activated(GraphicalEditorPart.java:941)
    at com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditorDelegate.delegatePageChange(LayoutEditorDelegate.java:450)
    at com.android.ide.eclipse.adt.internal.editors.common.CommonXmlEditor.pageChange(CommonXmlEditor.java:358)
    at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected(MultiPageEditorPart.java:290)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:240)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4128)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1457)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1480)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1465)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1270)
    at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:2746)
    at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1433)
    at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:257)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4128)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1457)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1480)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1465)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1270)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3974)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3613)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

谁能帮我解决这个异常(exception)？

Answer 1

我认为你应该使用

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

    <ImageView
        android:id="@+id/imgTile"
        android:src="@drawable/tile_background"
        android:contentDescription="@string/CD_TILE_BACKGROUND_IMAGE"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ImageView>

</LinearLayout >

由于 View 没有 add(other_view) 之类的任何功能，您可以在 ViewGorup 中添加 View ....