面向NullPointerException的WorkbenchPage.ShowView(String viewId)。
stackstrace如下。
！MESSAGE从插件调用代码“ org.eclipse.ui.workbench”时出现问题。
！堆栈0
java.lang.NullPointerException
at org.eclipse.ui.internal.WorkbenchPage.setState(WorkbenchPage.java:4024)
at org.eclipse.ui.internal.WorkbenchPage.toggleZoom(WorkbenchPage.java:4096)
at org.eclipse.ui.internal.WorkbenchIntroManager.setIntroStandby(WorkbenchIntroManager.java:201)
at org.eclipse.ui.internal.WorkbenchPage.checkIntro(WorkbenchPage.java:1202)
at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1170)
at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1140)
at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.java:3925)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3922)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3898)
at com.rcp.app.foundation.ui.services.PerspectiveChangeListener.perspectiveActivated(PerspectiveChangeListener.java:60)
at org.eclipse.ui.internal.PerspectiveListenerList$1.run(PerspectiveListenerList.java:74)
我没有得到我确切缺少的东西。谁能帮助我找出我在流程中到底缺少什么。
我写了以下的PerspectiveChangeListner。
public class PerspectiveChangeListener implements IPerspectiveListener, IPerspectiveListener3
{
/**
* WindowTitleUpdater Object to update the window title based on selected erspectives.
*/
private WindowTitleUpdater windowTitleUpdater = null;
/**
* Constructor.
* @param windowTitleUpdater
*/
public PerspectiveChangeListener( WindowTitleUpdater windowTitleUpdater )
{
this.windowTitleUpdater = windowTitleUpdater;
}
/**
* (non-Javadoc).
* @see org.eclipse.ui.IPerspectiveListener#perspectiveActivated(org.eclipse.ui.IWorkbenchPage,
* org.eclipse.ui.IPerspectiveDescriptor)
*/
@Override
public void perspectiveActivated( IWorkbenchPage page, IPerspectiveDescriptor perspective )
{
windowTitleUpdater.updateTitle( false );
if ( perspective.getId().equals( "com.app.perspective.id" ) )
{
try
{
page.showView( "com.app.view.id" );
}
}
}
最佳答案
perspectiveActivated侦听器由WorkbenchPage触发，该页面似乎不希望该侦听器在侦听器中调用页面showView方法，如果确实如此，则会感到困惑。
使用Display.asyncExec运行showView调用。这将在WorkbenchPage完成其工作之后运行代码。