Creating Toolbar in iphone sdk

Here is how you can create a toolbar at the bottom of your screen. (with code taken from the UICatalog sample)

UIToolbar *bar = [UIToolbar new];
bar.barStyle = UIBarStyleBlackOpaque;

// size up the toolbar and set its frame
[bar sizeToFit];
CGFloat toolbarHeight = [bar frame].size.height;
CGRect mainViewBounds = self.view.bounds; //view of your viewcontroller
[bar setFrame:CGRectMake(CGRectGetMinX(mainViewBounds),
CGRectGetMinY(mainViewBounds) + CGRectGetHeight(mainViewBounds),
CGRectGetWidth(mainViewBounds),
toolbarHeight)];

//add button
// create a bordered style button with custom image
UIImage *im = [UIImage imageNamed:@"selection.png"];
UIBarButtonItem *selectItem = [[UIBarButtonItem alloc] initWithImage:im
style:UIBarButtonItemStylePlain
target:self
action:@selector(changeSelection:)];
selectItem.width = 50.0f; //you can set the width of the icon
selectItem.title= @"Selection"; //set text below image icon

//note the nil at the end
NSArray *items = [NSArray arrayWithObjects: selectItem,nil];
[bar setItems:items animated:NO];
[self.view addSubView:bar];
[selectItem release];
[bar release];