I have been trying to have a view layout using TabWidget. This is
using Eclipse and Android 1.5. However, anytime I use TabWidget, I get
a NullPointerException in Eclipse. This is even with the sample on
http://developer.android.com/guide/tutorials/views/hello-tabwidget.html.
I saw few threads that mention that TabWidget implementation is very
flaky.
Has anyone seen similar issue?
Attached is the stack trace:
java.lang.NullPointerException
at android.widget.TabWidget.dispatchDraw(TabWidget.java:105)
at android.view.ViewGroup.drawChild(ViewGroup.java:1484)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1228)
at android.view.ViewGroup.drawChild(ViewGroup.java:1484)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1228)
at android.view.ViewGroup.drawChild(ViewGroup.java:1484)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1228)
at android.view.View.draw(View.java:5841)
at android.widget.FrameLayout.draw(FrameLayout.java:352)
at com.android.layoutlib.bridge.Bridge.computeLayout(Bridge.java:400)
at
com.android.ide.eclipse.editors.layout.GraphicalLayoutEditor.computeLayout
(Unknown Source)
at
com.android.ide.eclipse.editors.layout.GraphicalLayoutEditor.recomputeLayout
(Unknown Source)
at
com.android.ide.eclipse.editors.layout.GraphicalLayoutEditor.activated
(Unknown Source)
at com.android.ide.eclipse.editors.layout.LayoutEditor.pageChange
(Unknown Source)
at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected
(MultiPageEditorPart.java:266)
at org.eclipse.swt.widgets.TypedListener.handleEvent
(TypedListener.java:228)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1561)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1585)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1570)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1360)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:
3242)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2017)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:
320)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1561)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1585)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1570)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1360)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:
3482)
at org.eclipse.swt.widgets.Control.sendTrackEvents(Control.java:3024)
at org.eclipse.swt.widgets.Control.actionProc(Control.java:122)
at org.eclipse.swt.widgets.Display.actionProc(Display.java:362)
at org.eclipse.swt.internal.carbon.OS.CallNextEventHandler(Native
Method)
at org.eclipse.swt.widgets.Widget.kEventControlTrack(Widget.java:
1106)
at org.eclipse.swt.widgets.Control.kEventControlTrack(Control.java:
2097)
at org.eclipse.swt.widgets.Widget.controlProc(Widget.java:375)
at org.eclipse.swt.widgets.Display.controlProc(Display.java:862)
at org.eclipse.swt.internal.carbon.OS.SendEventToEventTarget(Native
Method)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3051)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:
2384)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
at org.eclipse.core.databinding.observable.Realm.runWithDefault
(Realm.java:288)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench
(Workbench.java:490)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:
149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start
(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run
(EclipseAppHandle.java:193)
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:386)
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:585)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
RS
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