UI控件（UIToolbar）

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];

_toolbar = [[UIToolbar alloc]init];
_toolbar.frame = CGRectMake(0, 0, 320, 45);

//以标题命名的按钮
_barItem = [[UIBarButtonItem alloc]
initWithTitle:@"Item1" style:UIBarButtonItemStyleDone target:self action:@selector(doClick)];

//以图片作为背景的按钮
UIImage *_image = [UIImage imageNamed:@"fresh.png"];
_barItem1 = [[UIBarButtonItem alloc]
initWithImage:_image style:UIBarButtonItemStylePlain target:self action:@selector(doClick)];

NSMutableArray *array = [NSMutableArray array];
[array addObject:_barItem];
[array addObject:_barItem1];

//在工具栏中添加按钮
[_toolbar setItems:array animated:YES];

[self.view addSubview:_toolbar];

}

-(void)doClick{
NSLog(@"doClick");
}

@end