iOS UIView 圆角

//将图层的边框设置为圆角

view.layer.cornerRadius = 8;//这是圆角的半径

view.layer.masksToBounds = YES;

//黑色边框

view.layer.borderWidth = 5;

view.layer.borderColor = [[UIColor blackColor ] CGColor];

//如果要贴图，除了用UIImageView，还可以直接在UIView中：

view.layer.contents = (id)[UIImage imageNamed:@"background.png"].CGImage;