questino about the Edit button

i adding edit button top right corner of tool bar doing this

code:

  - (void)viewdidload  {      nslog(@"view did load");      [super viewdidload];      // initialize var        self.navigationcontroller.navigationbarhidden   = no;      self.navigationitem.hidesbackbutton                = no;        self.navigationitem.rightbarbuttonitem            = [self editbuttonitem];  }  

also, documentation indicated

code:

name:editbuttonitem - (uibarbuttonitem *)editbuttonitem  availability: ios (2.0 , later)  abstract: returns bar button item toggles title , associated state between edit , done.

however, when run program , try click on edit button. changed done each row of table not have red circle (-) before...

please guide me on issue.

 

have implemented method allows editing of uitableview?

 

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