iphone - UIAlertView brings up completely unexpected function -

    -(void) buttonclick:(id) sender {      action=[[uialertview alloc] initwithtitle:nil message:@"confirm action" delegate:self cancelbuttontitle:@"cancel" otherbuttontitles:nil];      [action addbuttonwithtitle:@"yes"];       [action show];     [action release];    }      - (void)alertview:(uialertview *)action diddismisswithbuttonindex:(nsinteger)buttonindex {     if (buttonindex == 1) {         [self func1];     }     else if (buttonindex ==0)  //cancel     {      } } 

instead of executing func1 when clicked yes on alertview, app pop registration form registration page in app.

set break point on "if (buttonindex == 1) " , follow code using step button. problem should somewhere else in program.