单击操作栏中的共享APP链接时出现问题

I added Share App and Rate us links to Action bar.It shows nicely. When click on Rate us ,it will open Play store link.It's OK. But when click on Share App,it will open sharing dialog and App store link also. I want to disable opening App store link when click Share App. Another problem, When click back button in app store page,it will go to Play store.But I want to go back to my app. How to solve my 2 issues...?please help me I added Share App and Rate us links to Action b