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POCan't save Android XML file with custom component
 

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    <p>I created Android XML lay out with some custom components. But when I am saving the XML file I get error. Since this is my fist time with custom components (widgets) I have no idea why am I getting this error. This is my xml code.</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_marginTop="12dp" android:orientation="vertical" android:background="@drawable/layout_bg"&gt; &lt;LinearLayout android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_gravity="center_horizontal" android:paddingLeft="12dp" android:paddingRight="12dp" android:paddingTop="30dp"&gt; &lt;kankan.wheel.widget.WheelView android:id="@+id/day" android:layout_height="wrap_content" android:layout_width="46dp"/&gt; &lt;kankan.wheel.widget.WheelView android:id="@+id/month" android:layout_height="wrap_content" android:layout_width="100dp"/&gt; &lt;kankan.wheel.widget.WheelView android:id="@+id/year" android:layout_height="wrap_content" android:layout_width="wrap_content"/&gt; &lt;/LinearLayout&gt; </code></pre> <p>And this is the error I get. <strong>I must say that there is no such a resource value in R.java file</strong></p> <blockquote> <p>error! NotFoundException: Could not resolve resource value: 0x7F020009.</p> <p>android.content.res.Resources$NotFoundException: Could not resolve resource value: 0x7F020009. at com.android.layoutlib.bridge.BridgeResources.throwException(BridgeResources.java:546) at com.android.layoutlib.bridge.BridgeResources.getDrawable(BridgeResources.java:131) at kankan.wheel.widget.WheelView.initResourcesIfNecessary(WheelView.java:427) at kankan.wheel.widget.WheelView.calculateLayoutWidth(WheelView.java:482) at kankan.wheel.widget.WheelView.onMeasure(WheelView.java:518) at android.view.View.measure(View.java:7964) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:888) at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:619) at android.widget.LinearLayout.onMeasure(LinearLayout.java:280) at android.view.View.measure(View.java:7964) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:888) at android.widget.LinearLayout.measureVertical(LinearLayout.java:350) at android.widget.LinearLayout.onMeasure(LinearLayout.java:278) at android.view.View.measure(View.java:7964) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3023) at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) at android.view.View.measure(View.java:7964) at com.android.layoutlib.bridge.Bridge.computeLayout(Bridge.java:443) at com.android.ide.common.rendering.LayoutLibrary.createLegacySession(LayoutLibrary.java:404) at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:285) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(GraphicalEditorPart.java:1506) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(GraphicalEditorPart.java:1312) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.recomputeLayout(GraphicalEditorPart.java:1043) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.onXmlModelChanged(GraphicalEditorPart.java:1005) at com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditor.xmlModelChanged(LayoutEditor.java:303) at com.android.ide.eclipse.adt.internal.editors.AndroidXmlEditor$XmlModelStateListener.modelChanged(AndroidXmlEditor.java:1213) at org.eclipse.wst.sse.core.internal.model.AbstractStructuredModel.fireModelChanged(AbstractStructuredModel.java:553) at org.eclipse.wst.sse.core.internal.model.AbstractStructuredModel.internalModelChanged(AbstractStructuredModel.java:887) at org.eclipse.wst.sse.core.internal.model.AbstractStructuredModel.changedModel(AbstractStructuredModel.java:382) at org.eclipse.wst.xml.core.internal.document.DOMModelImpl.changedModel(DOMModelImpl.java:167) at com.android.ide.eclipse.adt.internal.editors.AndroidXmlEditor.wrapEditXmlModel(AndroidXmlEditor.java:803) at com.android.ide.eclipse.adt.internal.editors.uimodel.UiElementNode.setPropertyValue(UiElementNode.java:1885) at com.android.ide.eclipse.adt.internal.editors.layout.gle2.CanvasViewInfo.setPropertyValue(CanvasViewInfo.java:320) at org.eclipse.ui.views.properties.PropertySheetEntry.valueChanged(PropertySheetEntry.java:782) at org.eclipse.ui.views.properties.PropertySheetEntry.setValue(PropertySheetEntry.java:723) at org.eclipse.ui.views.properties.PropertySheetEntry.applyEditorValue(PropertySheetEntry.java:146) at org.eclipse.ui.views.properties.PropertySheetEntry$1.applyEditorValue(PropertySheetEntry.java:103) at org.eclipse.jface.viewers.CellEditor$1.run(CellEditor.java:333) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) at org.eclipse.jface.viewers.CellEditor.fireApplyEditorValue(CellEditor.java:331) at com.android.ide.eclipse.adt.internal.editors.ui.EditableDialogCellEditor.handleDefaultSelection(EditableDialogCellEditor.java:264) at com.android.ide.eclipse.adt.internal.editors.ui.EditableDialogCellEditor$1.widgetDefaultSelected(EditableDialogCellEditor.java:83) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:119) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) 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:369) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407) at org.eclipse.equinox.launcher.Main.main(Main.java:1383)</p> </blockquote> <p>Please help me to resolve this error. Thanks in advance.</p>
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    1. CODid you name your file like mylayout.xml? Then you forgot -> <?xml version="1.0" encoding="utf-8"?> at the start of the xml file and declaring the namespace in the first layout element -> xmlns:android="http://schemas.android.com/apk/res/android"
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    2. COFixed the layout so the xml start is actually visible :)
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    3. CODid the fix with "xmlns:android..." work now? Maybe you should also clean the Project and build it again. Is there a WheelView component in the package "kankan.wheel.widget"?
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