Eclipse RCP ,why perspective bar not appear?

I called such method in WorkbenchWindowAdvisor's postWindowOpen method

windowConfigurer.setShowPerspectiveBar(true);

but perspective ba开发者_开发百科r stills not show itself

Try calling it from preWindowOpen().

Try to clean your workspace of your running product. These kind of preferences are saved and persisted in the workbenchlayout and are loaded from there instead from your code.