尝试将日期选择器添加到布局时未找到 Android 资源异常

Question

我想做的只是简单地将一个日期选择器添加到 API 级别 21 的线性布局中。当我这样做时，出于某种原因，我得到了 Resources$NotFoundException

这是异常的踪迹:

android.content.res.Resources$NotFoundException
    at com.android.layoutlib.bridge.android.BridgeContext.obtainStyledAttributes(BridgeContext.java:490)
    at com.android.layoutlib.bridge.android.BridgeContext.obtainStyledAttributes(BridgeContext.java:93)
    at android.widget.TextView.setTextAppearance(TextView.java:2484)
    at android.widget.YearPickerView$YearAdapter.getView(YearPickerView.java:132)
    at android.widget.AbsListView.obtainView(AbsListView.java:2344)
    at android.widget.ListView.measureHeightOfChildren(ListView.java:1270)
    at android.widget.ListView.onMeasure(ListView.java:1182)
    at android.view.View.measure(View.java:17430)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
    at android.view.View.measure(View.java:17430)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
    at android.view.View.measure(View.java:17430)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
    at android.view.View.measure(View.java:17430)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
    at android.view.View.measure(View.java:17430)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
    at android.view.View.measure(View.java:17430)
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:875)
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
    at android.view.View.measure(View.java:17430)
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:875)
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
    at android.view.View.measure(View.java:17430)
    at com.android.layoutlib.bridge.impl.RenderSessionImpl.measureView(RenderSessionImpl.java:626)
    at com.android.layoutlib.bridge.impl.RenderSessionImpl.render(RenderSessionImpl.java:526)
    at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:334)
    at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:332)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.RenderService.createRenderSession(RenderService.java:517)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(GraphicalEditorPart.java:1584)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.recomputeLayout(GraphicalEditorPart.java:1309)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.onXmlModelChanged(GraphicalEditorPart.java:1267)
    at com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditorDelegate.delegateXmlModelChanged(LayoutEditorDelegate.java:402)
    at com.android.ide.eclipse.adt.internal.editors.common.CommonXmlEditor.xmlModelChanged(CommonXmlEditor.java:329)
    at com.android.ide.eclipse.adt.internal.editors.AndroidXmlEditor$XmlModelStateListener.modelChanged(AndroidXmlEditor.java:1653)
    at com.android.ide.eclipse.adt.internal.editors.AndroidXmlEditor.wrapEditXmlModel(AndroidXmlEditor.java:1114)
    at com.android.ide.eclipse.adt.internal.editors.AndroidXmlEditor.wrapUndoEditXmlModel(AndroidXmlEditor.java:1190)
    at com.android.ide.eclipse.adt.internal.editors.layout.gle2.OutlineDropListener.performDrop(OutlineDropListener.java:125)
    at org.eclipse.jface.viewers.ViewerDropAdapter.drop(ViewerDropAdapter.java:254)
    at org.eclipse.swt.dnd.DNDListener.handleEvent(DNDListener.java:91)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1085)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1070)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:782)
    at org.eclipse.swt.dnd.DropTarget.Drop(DropTarget.java:456)
    at org.eclipse.swt.dnd.DropTarget$3.method6(DropTarget.java:258)
    at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:119)
    at org.eclipse.swt.internal.ole.win32.COM.DoDragDrop(Native Method)
    at org.eclipse.swt.dnd.DragSource.drag(DragSource.java:363)
    at org.eclipse.swt.dnd.DragSource.access$0(DragSource.java:289)
    at org.eclipse.swt.dnd.DragSource$1.handleEvent(DragSource.java:172)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1465)

我已尝试清理项目并删除 R 文件。我读到其他人有这个问题，因为他们在代码中的某处调用了 txtview.settext() 参数，但我检查了我的代码和每个地方得到一个字符串。

为什么我不能将 wiget 添加到布局中？

Answer 1

在我放入 DatePicker 之前，我遇到了同样的问题:

android:datePickerMode="spinner"