rcp新建工程没有图标的有关问题解决方案

rcp新建工程没有图标的问题解决方案

这几天因为北京的项目开展，平台加入了java开发模式，因此工具开始需要支持java工程，但是发现在工具（rcp开发的eclipse开发工具）不能正常显示图标；前边开发的是普通工程没有显示不表是正常的，但是现在没有显示图标就很怪异，因为本身会有一个小J在工程名前边，标示是java工程；但小J左下角正常情况下应该是工程图标的地方，却显示是一个小红方块，很明显是没有找到相应的文件嘛！于是查找了网上的解决方案，这里做一下收集：

用到的连接地址：

http://zhaozhongwei.iteye.com/blog/305824

http://www.blogjava.net/USTCEric/archive/2006/01/08/27141.html

第一篇：

在rcp中（我的环境是eclipse3.4），有的时候需要建立工程，但是默认情况下建立的工程的图片显示不出来（包视图里出现这种情况，别的视图不清楚），这里拿新建java工程举例。

在获得图片的时候，程序会调用到org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider类的getBaseImageDescriptor方法，在288行（版本不同会有细微差别）有类似如下代码。

????case IJavaElement.JAVA_PROJECT:
?????IJavaProject jp= (IJavaProject)element;
?????if (jp.getProject().isOpen()) {
??????IProject project= jp.getProject();
??????IWorkbenchAdapter adapter= (IWorkbenchAdapter)project.getAdapter(IWorkbenchAdapter.class);
??????if (adapter != null) {
???????ImageDescriptor result= adapter.getImageDescriptor(project);
???????if (result != null)
????????return result;
??????}
??????return DESC_OBJ_PROJECT;
?????}

。。。

如果跟到这里，会发现adapter 的值为null，而正常情况下这个adapter数有值的。

在rcp中生成的ApplicationWorkbenchAdvisor的preWindowOpen方法里面会生成

WorkbenchAdapterBuilder.registerAdapters();

但是我用debug发现在eclipse3.4里面，preWindowOpen方法没被调用，导致WorkbenchAdapterBuilder.registerAdapters();没被执行，从而导致adapter 的值为null。这样工程的前面没有图片，会出现一小块空白！把WorkbenchAdapterBuilder.registerAdapters();加到ApplicationWorkbenchAdvisor类的initialize方法里会解决这个问题，默认不生成initialize方法，所以要重载该方法，如下

?@Override
?public void initialize(IWorkbenchConfigurer configurer) {
??// TODO Auto-generated method stub
??super.initialize(configurer);
??WorkbenchAdapterBuilder.registerAdapters();
?}

经过这样的修改后会看到，工程的前面是个红色的图片（没找到对应图片的标志），在这个红图片的右上角有一个J（代表是java工程），这是因为eclipse调用的是org.eclipse.ui.internal.ide.application.IDEApplication（在org.eclipse.ui.ide.application插件下），而我们的rcp会调用我们的Application

IDEApplication的start方法代码中有如下代码片段

int returnCode = PlatformUI.createAndRunWorkbench(display,
??????????????????? new IDEWorkbenchAdvisor());

IDEWorkbenchAdvisor类中的initialize方法会调用

// register shared images
??declareWorkbenchImages();

而declareWorkbenchImages个方法就是工程等图片被注册的地方！所以我们要做的就是把declareWorkbenchImages这个方法里的代码全部复制到我们的ApplicationWorkbenchAdvisor类里，然后在initialize方法里调用就可以了，因为图片都是在org.eclipse.ui.ide.application插件下，而代码也用到了这个插件，所以要在依赖里家上这个插件。

第二篇：

?自己遇到了这方面问题，在瀚海星云上咨询了一下，解决后总结了一下。现在收录到自己的空间里：）

?前段时间为了使用jdt中的package explorer进行一个rcp程序的开发。在版面上进行了
提问，得到了simon lei,pandawang 的热情帮助，在此表示感谢。经过一番学习，在几个论
坛上问了一下，当时仍没有找到解决方法（主要是使用package explorer时项目和文件
夹的显示问题），又看到rcp的faq中有reusable 的说法就得出不能在rcp中复用jdt组件
的结论。实际上这个结论是错误的，只要提供相关的插件支持是可以重用jdt中组件的，
我再一次重复这个问题是为了避免我那个回帖误导别人。

我在rcp的perspective中用addview加入package explorer是没有问题的，之所以不能显
示项目名称是因为没有注册相关的adapter。

只要在workbenchadvisor中的initialize方法中加入：
WorkbenchAdapterBuilder.registerAdapters();
declareWorkbenchImages();
就可以解决问题。WorkbenchAdapterBuilder是org.eclipse.ui.ide中的类，用
registerAdapters方法注册adapter后就可以正常显示项目名称以及文件夹名称，但是这
时候还不能显示相关的图标。
declareWorkbenchImages()方法用来解决图标的问题。
实现如下：

/** * Declares all IDE-specific workbench images. This includes both "shared" * images (named in {@link IDE.SharedImages}) and internal images (named in * {@link org.eclipse.ui.internal.ide.IDEInternalWorkbenchImages}). *  * @see IWorkbenchConfigurer#declareImage */private void declareWorkbenchImages() {final String ICONS_PATH = "$nl$/icons/full/";//$NON-NLS-1$final String PATH_ELOCALTOOL = ICONS_PATH + "elcl16/"; // Enabled //$NON-NLS-1$// toolbar// icons.final String PATH_DLOCALTOOL = ICONS_PATH + "dlcl16/"; // Disabled //$NON-NLS-1$// //$NON-NLS-1$// toolbar// icons.final String PATH_ETOOL = ICONS_PATH + "etool16/"; // Enabled toolbar //$NON-NLS-1$// //$NON-NLS-1$// icons.final String PATH_DTOOL = ICONS_PATH + "dtool16/"; // Disabled toolbar //$NON-NLS-1$// //$NON-NLS-1$// icons.final String PATH_OBJECT = ICONS_PATH + "obj16/"; // Model object //$NON-NLS-1$// //$NON-NLS-1$// iconsfinal String PATH_WIZBAN = ICONS_PATH + "wizban/"; // Wizard //$NON-NLS-1$// //$NON-NLS-1$// icons// View iconsfinal String PATH_EVIEW= ICONS_PATH + "eview16/"; //$NON-NLS-1$Bundle ideBundle = Platform.getBundle(IDEWorkbenchPlugin.IDE_WORKBENCH);declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC, PATH_ETOOL+ "build_exec.gif", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC_HOVER,PATH_ETOOL + "build_exec.gif", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC_DISABLED,PATH_DTOOL + "build_exec.gif", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_SEARCH_SRC, PATH_ETOOL+ "search_src.gif", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_SEARCH_SRC_HOVER,PATH_ETOOL + "search_src.gif", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_SEARCH_SRC_DISABLED,PATH_DTOOL + "search_src.gif", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_NEXT_NAV, PATH_ETOOL+ "next_nav.gif", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_PREVIOUS_NAV, PATH_ETOOL+ "prev_nav.gif", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_WIZBAN_NEWPRJ_WIZ, PATH_WIZBAN+ "newprj_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_WIZBAN_NEWFOLDER_WIZ,PATH_WIZBAN + "newfolder_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_WIZBAN_NEWFILE_WIZ, PATH_WIZBAN+ "newfile_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_WIZBAN_IMPORTDIR_WIZ,PATH_WIZBAN + "importdir_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_WIZBAN_IMPORTZIP_WIZ,PATH_WIZBAN + "importzip_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_WIZBAN_EXPORTDIR_WIZ,PATH_WIZBAN + "exportdir_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_WIZBAN_EXPORTZIP_WIZ,PATH_WIZBAN + "exportzip_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_WIZBAN_RESOURCEWORKINGSET_WIZ,PATH_WIZBAN + "workset_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_DLGBAN_SAVEAS_DLG, PATH_WIZBAN+ "saveas_wiz.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_DLGBAN_QUICKFIX_DLG, PATH_WIZBAN+ "quick_fix.png", false); //$NON-NLS-1$declareWorkbenchImage(ideBundle, IDE.SharedImages.IMG_OBJ_PROJECT,PATH_OBJECT + "prj_obj.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDE.SharedImages.IMG_OBJ_PROJECT_CLOSED, PATH_OBJECT+ "cprj_obj.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle, IDE.SharedImages.IMG_OPEN_MARKER,PATH_ELOCALTOOL + "gotoobj_tsk.gif", true); //$NON-NLS-1$// Quick fix iconsdeclareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ELCL_QUICK_FIX_ENABLED,PATH_ELOCALTOOL + "smartmode_co.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_DLCL_QUICK_FIX_DISABLED,PATH_DLOCALTOOL + "smartmode_co.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_FIXABLE_WARNING,PATH_OBJECT + "quickfix_warning_obj.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_FIXABLE_ERROR,PATH_OBJECT + "quickfix_error_obj.gif", true); //$NON-NLS-1$// task objects// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_HPRIO_TSK,// PATH_OBJECT+"hprio_tsk.gif");// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_MPRIO_TSK,// PATH_OBJECT+"mprio_tsk.gif");// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_LPRIO_TSK,// PATH_OBJECT+"lprio_tsk.gif");declareWorkbenchImage(ideBundle, IDE.SharedImages.IMG_OBJS_TASK_TSK,PATH_OBJECT + "taskmrk_tsk.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle, IDE.SharedImages.IMG_OBJS_BKMRK_TSK,PATH_OBJECT + "bkmrk_tsk.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_COMPLETE_TSK, PATH_OBJECT+ "complete_tsk.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_INCOMPLETE_TSK, PATH_OBJECT+ "incomplete_tsk.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_WELCOME_ITEM, PATH_OBJECT+ "welcome_item.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_WELCOME_BANNER, PATH_OBJECT+ "welcome_banner.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_ERROR_PATH, PATH_OBJECT+ "error_tsk.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_WARNING_PATH, PATH_OBJECT+ "warn_tsk.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_OBJS_INFO_PATH, PATH_OBJECT+ "info_tsk.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_LCL_FLAT_LAYOUT, PATH_ELOCALTOOL+ "flatLayout.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_LCL_HIERARCHICAL_LAYOUT,PATH_ELOCALTOOL + "hierarchicalLayout.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_PROBLEM_CATEGORY,PATH_ETOOL + "problem_category.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_PROBLEMS_VIEW,PATH_EVIEW + "problems_view.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_PROBLEMS_VIEW_ERROR,PATH_EVIEW + "problems_view_error.gif", true); //$NON-NLS-1$declareWorkbenchImage(ideBundle,IDEInternalWorkbenchImages.IMG_ETOOL_PROBLEMS_VIEW_WARNING,PATH_EVIEW + "problems_view_warning.gif", true); //$NON-NLS-1$// synchronization indicator objects// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_WBET_STAT,// PATH_OVERLAY+"wbet_stat.gif");// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_SBET_STAT,// PATH_OVERLAY+"sbet_stat.gif");// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_CONFLICT_STAT,// PATH_OVERLAY+"conflict_stat.gif");// content locality indicator objects// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_NOTLOCAL_STAT,// PATH_STAT+"notlocal_stat.gif");// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_LOCAL_STAT,// PATH_STAT+"local_stat.gif");// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_FILLLOCAL_STAT,// PATH_STAT+"filllocal_stat.gif");}/** * Declares an IDE-specific workbench image. *  * @param symbolicName *            the symbolic name of the image * @param path *            the path of the image file; this path is relative to the base *            of the IDE plug-in * @param shared *            &lt;code&gt;true&lt;/code&gt; if this is a shared image, and *            &lt;code&gt;false&lt;/code&gt; if this is not a shared image * @see IWorkbenchConfigurer#declareImage */private void declareWorkbenchImage(Bundle ideBundle, String symbolicName,String path, boolean shared) {URL url = FileLocator.find(ideBundle, new Path(path), null);ImageDescriptor desc = ImageDescriptor.createFromURL(url);getWorkbenchConfigurer().declareImage(symbolicName, desc, shared);}

由于jdt是在为ide服务的，所以在重用组件时遇到的问题应该可以在eclipse源码中找到
答案。

rcp新建工程没有图标的有关问题解决方

热点推荐