Просто попробуйте:
В файле .h:
UIToolbar* toolbar;
В файле .m
UIBarButtonItem *actionButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(doAction)];
toolbar = [UIToolbar new];
toolbar.barStyle = UIBarStyleDefault;
[toolbar sizeToFit];
CGFloat toolbarHeight = [toolbar frame].size.height;
CGRect mainViewBounds = appDel.window.bounds;
[toolbar setFrame:CGRectMake(CGRectGetMinX(mainViewBounds),
438,
CGRectGetWidth(mainViewBounds),
toolbarHeight)];
[[[UIApplication sharedApplication] keyWindow] addSubview:toolbar];