button設定邊寬和圓角

   UIButton *meifuButton = [UIButton buttonWithType:UIButtonTypeSystem];
        [meifuButton setTitle:@"分享到美膚" forState:UIControlStateNormal];
        [meifuButton setTitleColor:REDSELECTCOLORE forState:UIControlStateNormal];
        meifuButton.frame = CGRectMake(SCREEN_WIDTH - 100, 20, 90, 25);
        meifuButton.layer.cornerRadius = 8; //設定半徑
        meifuButton.layer.borderWidth = 1;  //設定邊寬
        meifuButton.layer.borderColor = REDSELECTCOLORE.CGColor; //設定邊部的顏色

        [_shareContent addSubview:meifuButton];