UIButton *meifuButton = [UIButton buttonWithType:UIButtonTypeSystem];
[meifuButton setTitle:@"分享到美肤" forState:UIControlStateNormal];
[meifuButton setTitleColor:REDSELECTCOLORE forState:UIControlStateNormal];
meifuButton.frame = CGRectMake(SCREEN_WIDTH - 100, 20, 90, 25);
meifuButton.layer.cornerRadius = 8; //设置半径
meifuButton.layer.borderWidth = 1; //设置边宽
meifuButton.layer.borderColor = REDSELECTCOLORE.CGColor; //设置边部的颜色
[_shareContent addSubview:meifuButton];
button设置边宽和圆角
原文：http://www.cnblogs.com/tian-sun/p/4849790.html
