Add Multiple Buttons in the UINavigation Bar in iOS

UIBarButtonItem *deleteButton = [[UIBarButtonItem alloc]
                                     initWithBarButtonSystemItem:UIBarButtonSystemItemEdit
                                     target:self
                                     action:@selector(deleteAction:)];
    deleteButton.style = UIBarButtonItemStyleBordered;
    UIBarButtonItem  *saveButton = [[UIBarButtonItem alloc]
                                   initWithBarButtonSystemItem:UIBarButtonSystemItemSave
                                   target:self
                  action:@selector(saveAction:)];
    saveButton.style = UIBarButtonItemStyleBordered;
   
    // create a spacer between the buttons
    UIBarButtonItem *spacer = [[UIBarButtonItem alloc]
                               initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
                               target:nil
                               action:nil];
   
    NSArray *myButtonArray = [[NSArray alloc] initWithObjects:deleteButton, saveButton,spacer, nil];
    self.navigationItem.rightBarButtonItems = myButtonArray;