如何修复 Eclipse RCP 中的“缺少约束：Import-Package：”和“Require-Bundle”

Question

I am developing an Eclipse RCP application. Therefore I am trying to implement an ISelectionListener. Therefore I have to import the package "org.eclipse.ui". When i wanted to import the package the error that I have add the package to my project. When I did this an then want to start my Application an Errorwindow like the folowing appears: https://i.stack.imgur.com/kVTAO.png (Sorry my reputation is to low to post some images)
In my case it contains more items but all with the error: "Missing Constraint: Import-Package" or "Required-Bundle". I was trying to add the packages to my manifest file as explained in the error but this does not change anything.

Thanks for your help.

Answer 1

The error you have is about inconsistent set of "Plug-ins" selected for Run/Debug configuration.

By default you are running with "all workspace and enabled target plug-ins" that may be not an optimal choice for RCP development. You can try to change it to "plug-ins selected below only" and then tune it manually.

For example you can uncheck everything except plug-ins that declare the product and the application and then use "Add Required Plug-ins" button.