android - How to implemente OnClickListener in an activity? -

in application have simple activity 3 buttons, , not set individual onclicklistener each button, decided implement in activity, doesn't work.

here code

public class mainactivity extends activity implements view.onclicklistener{      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);     }      private void checkforviolations(){      }      @override     public void onclick(view v) {         switch (v.getid()){             case r.id.btncheck:                 checkforviolations();                 break;             case r.id.btnviewallviolations:                 intent violationlistintent = new intent(mainactivity.this,violationlistactivity.class);                 startactivity(violationlistintent);                 break;             case r.id.btnsettings:                 intent settingsintent = new intent(mainactivity.this, violationlistactivity.class);                 startactivity(settingsintent);                 break;         }     } } 

am missing something, because program not stop in onclick method when debug app.

you have set view's listener activity. so, should this:

@override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     view btncheck = findviewbyid(r.id.btncheck);     btncheck.setonclicklistener(this);     view btnviewallviolations = findviewbyid(r.id.btnviewallviolations);     btnviewallviolations.setonclicklistener(this);     view btnsettings = findviewbyid(r.id.btnsettings);     btnsettings.setonclicklistener(this); }