PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage() 中的 NullPointerException [英] NullPointerException in PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage()

问题描述

 //obtain the active page
 IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();

在线程Thread-3"java.lang.NullPointerExceptionµ 中返回异常.我该怎么办?

returns Exception in thread "Thread-3" java.lang.NullPointerExceptionµ. What shall i do?

推荐答案

如果线程没有在活动窗口中运行，PlatformUI.getWorkbench().getActiveWorkbenchWindow() 将返回null".您必须将代码包装在 Display 中，例如:

If the thread does not run in the active window, PlatformUI.getWorkbench().getActiveWorkbenchWindow() will return "null". You must wrap your code in a Display, e.g.:

Display.getDefault().asyncExec(new Runnable() {
    @Override
    public void run() {
        IWorkbenchWindow iw = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
    }
});

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