Newbie- Errors in main_activity.java in Eclipse -

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have no experience in java.get error in "r." everywhere in main_activity.java, when make new android project in eclipse

       setcontentview(r.layout.activity_main);         if (id == r.id.action_settings)

help appreciated.thanks

check if id action_setting in activity_main xml file. if error still there. go projects, try cleaning.


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