- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    self.title=@"圆角矩形";

    UIImageView *imageView=[[UIImageView alloc]initWithFrame:CGRectMake(50, 100, 100, 100)];

    imageView.backgroundColor=[UIColor redColor];

    //设计其圆角半径

    [imageView.layer setCornerRadius:18.0f];

    [imageView.layer setMasksToBounds:YES];

    [self.view addSubview:imageView];

}