RightBarButon

//rightBar button

UIButton *rightButton = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 34, 34)];

[rightButton setImage:[UIImage imageNamed:@"share_details"] forState:UIControlStateNormal];

[rightButton addTarget:self action:@selector(doShare) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *rightBarBtn = [[UIBarButtonItem alloc]initWithCustomView:rightButton];

self.navigationItem.rightBarButtonItem = rightBarBtn;